Matlab format number

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Display Format for Numeric Values

By default, MATLAB® uses a 5-digit short format to display numbers. For example,

You can change the display in the Command Window or Editor using the function.

Using the function only sets the format for the current MATLAB session. To set the format for subsequent sessions, click Preferences on the Home tab in the Environment section. Select > , and then choose a Numeric format option.

The following table summarizes the numeric output format options.

Result

Example

Short, fixed-decimal format with 4 digits after the decimal point.

Long, fixed-decimal format with 15 digits after the decimal point for values, and 7 digits after the decimal point for values.

Short scientific notation with 4 digits after the decimal point.

Long scientific notation with 15 digits after the decimal point for values, and 7 digits after the decimal point for values.

Short, fixed-decimal format or scientific notation, whichever is more compact, with a total of 5 digits.

Long, fixed-decimal format or scientific notation, whichever is more compact, with a total of 15 digits for values, and 7 digits for values.

Short engineering notation (exponent is a multiple of 3) with 4 digits after the decimal point.

Long engineering notation (exponent is a multiple of 3) with 15 significant digits.

Positive/Negative format with , , and blank characters displayed for positive, negative, and zero elements.

Currency format with 2 digits after the decimal point.

Hexadecimal representation of a binary double-precision number.

Ratio of small integers.

The display format only affects how numbers are displayed, not how they are stored in MATLAB.

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Matlab Formatting Numbers

Listing Results Matlab Formatting Numbers

Display Format for Numeric Values MATLAB & Simulink

8 hours ago By default, MATLAB ® uses a 5-digit short format to display numbers. For example, x = 4/3. x = 1.3333. You can change the display in the Command Window or Editor using the format function. format long x. x = 1.333333333333333. Using the format function only sets the format for the current MATLAB session.

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Formatting Text MATLAB & Simulink

3 hours ago Precision. The precision field in a formatting operator is a nonnegative integer that immediately follows a period. For example, in the operator %7.3f, the precision is 3.For the %g operator, the precision indicates the number of significant digits to display. For the %f, %e, and %E operators, the precision indicates how many digits to display to the right of the decimal point.

Alarm: \a

Backslash: \\

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Format Numbers in a Table MATLAB & Simulink

1 hours ago Generate a 4-by-4 array of random numbers. Initialize the random number generator using a seed of 1, so that each time the example runs, rand produces the same numbers. format long rng ( "default" ); rng (1); randNumbers = rand (4) randNumbers = 4×4 0.417022004702574 0.146755890817113 0.396767474230670 0.204452249731517 0.720324493442158 0

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Numeric Types MATLAB & Simulink

6 hours ago Floating-Point Numbers. MATLAB represents floating-point numbers in either double-precision or single-precision format. The default is double precision. Single Precision Math. This example shows how to perform arithmetic and linear algebra with single precision data. Integers. MATLAB supports 1-, 2-, 4-, and 8-byte storage for integer data.

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How do I change the number display MATLAB & Simulink

2 hours ago It turns out that is not enough in practice to be unique. There are 24 distinct representable values in unique(pi-37*eps:eps:pi+9*eps), all of which display as 3.14159265358979 under format long g. If the goal is to output enough digits to be able to transfer the values exactly in text form, then format long g is not sufficient.

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Matlab number formatting? Stack Overflow

9 hours ago I'm having some difficulties processing some numbers. The results I get are some like: 0.000093145+1.6437e-011i 0.00009235+4.5068e-009i I've already try to use format long and as alternative passing to string and then str2num and with no good results also. Although is not being possible to convert them properly as I want (e.g. to a number with 9 decimals) If …

Reviews: 2

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Display Format for Numeric Values MATLAB & Simulink

7 hours ago By default, MATLAB ® uses a 5-digit short format to display numbers. For example, x = 4/3. x = 1.3333. You can change the display in the Command Window or Editor using the format function. format long x. x = 1.333333333333333. Using the format function only sets the format for the current MATLAB session.

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Formatting output and help in MATLAB

2 hours agoFormatting floating point numbers. Floating point are the numbers wherein the number of digits before and after the decimal is not fixed that is the decimal is floating. By default, MATLAB uses the command “short” to present output …

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format (MATLAB Functions)

3 hours ago For example, MATLAB uses three digits to display numbers of type int8 (i.e., -128:127). Setting format to short or long does not affect the display of integer variables. The specified format applies only to the current MATLAB session. To maintain a format across sessions, use MATLAB preferences. To see which type is currently in use, type . get

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MATLAB: How to format the number displayed on the “uitable

Just Now The numbers are displayed with scientific notation with 2 digits after the decimal point. In the "arrayfun" function, the option "UniformOutput" is specified as false to make the output of the "arrayfun" to be a cell array.

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MATLAB 7 MATFile Format

1 hours agoMATLAB 5.0 MAT-file, Platform: SOL2, Created on: Thu Nov 13 10:10:27 1997 Note When creating a MAT-file, you must write data in the first 4 bytes of this header. MATLAB uses these bytes to determine if a MAT-file uses a Level 5 format or a Level 4 format. If any of these bytes contains a zero, MATLAB will incorrectly assume the file is a Level

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Mostrar el formato de valores numéricos MATLAB

7 hours ago By default, MATLAB ® uses a 5-digit short format to display numbers. For example, x = 4/3. x = 1.3333. You can change the display in the Command Window or Editor using the format function. format long x. x = 1.333333333333333. Using the format function only sets the format for the current MATLAB session.

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Format Numbers in a Table MATLAB & Simulink MathWorks

Just Now Generate a 4-by-4 array of random numbers. Initialize the random number generator using a seed of 1, so that each time the example runs, rand produces the same numbers. format long rng ( "default" ); rng (1); randNumbers = rand (4) randNumbers = 4×4 0.417022004702574 0.146755890817113 0.396767474230670 0.204452249731517 0.720324493442158 0

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Data Type Conversion MATLAB & Simulink MathWorks

2 hours ago Data Type Conversion. Convert between numeric arrays, strings and character arrays, dates and times, cell arrays, structures, or tables. MATLAB ® has many functions to convert values from one data type to another for use in different contexts. For example, you can convert numbers to text and then append them to plot labels or file names.

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Formatting Text MATLAB & Simulink MathWorks France

2 hours ago Precision. The precision field in a formatting operator is a nonnegative integer that immediately follows a period. For example, in the operator %7.3f, the precision is 3.For the %g operator, the precision indicates the number of significant digits to display. For the %f, %e, and %E operators, the precision indicates how many digits to display to the right of the decimal point.

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How do i convert scientific notation into number in matlab

2 hours agoMATLAB, like most programming languages, does not store numeric values as "decimal" but as binary, so I have no idea what you mean by "I want covert the value of a in decimal form".The value is stored as the closest binary representation of the number that you have given, which is the best that we can do unless we get into more complicated numeric …

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The Language of Technical Computing

8 hours ago Computation Visualization Programming Using MATLAB Version 6 MATLAB ® The Language of Technical Computing

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Convert Text to Numeric Values MATLAB & Simulink

7 hours ago Convert text to arrays of numeric values. If str2double cannot convert text to a number, then it returns a NaN value.. While the str2num function can also convert text to numbers, it is not recommended.str2num uses the eval function, which can cause unintended side effects when the text input includes a function name. To avoid these issues, use str2double.. As an alternative, …

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How to format a cell array MATLAB Answers MATLAB Central

Just Now Quick question here. I have a 1x15 cell which contains 15 24x1 double (i.e 15 cells, each containing 24 numbers). Is there an easy way to convert this into any other format? Say a 1x360 cell ? Or anything else that's actually easy to use?

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Format Output MATLAB & Simulink MathWorks Italia

6 hours agoFormat Floating-Point Numbers. You can change the way numbers display in both the Command Window and the Live Editor. By default, MATLAB uses the short format (5-digit scaled, fixed-point values). For example, suppose that you enter x = [4/3 1.2345e-6] in the Command Window. The MATLAB output display depends on the format you selected.

long: x = 1.333333333333333 0.000001234500000

short e: x = 1.3333e+00 1.2345e-06

short (default): x = 1.3333 0.0000

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Format Output MATLAB & Simulink MathWorks France

6 hours agoFormat Floating-Point Numbers. You can change the way numbers display in both the Command Window and the Live Editor. By default, MATLAB uses the short format (5-digit scaled, fixed-point values). For example, suppose that you enter x = [4/3 1.2345e-6] in the Command Window. The MATLAB output display depends on the format you selected.

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Introduction to the Live Editor in MATLAB Mobile MATLAB

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Just Now Getting all the details right for exponential format can be difficult, with little details like that making quite a difference in how easy it is to write the regular expression. You could also use regular expressions inside MATLAB; this will be slower than calling out to perl, but might allow you to skip some of those str2num() as str2num() is

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VBA Number Format What does Number Format Function do in

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Set output display format for Command Window MATLAB

2 hours ago For example, MATLAB uses 3 digits to display int8 data types (for instance, -128:127). Setting the output format to short or long does not affect the display of integer-type variables. Integer-valued, floating-point numbers with a maximum of 9 digits do not display in scientific notation.

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7 hours ago Specify the Format name-value pair in readtable. Set the VariableTypes property of the import options for the file. Use the Format name-value pair to specify the variable data types, read the data, and display the first five rows. In the % {yyyy-MM-dd HH:mm}D part of the formatSpec specifier, the text between the curly braces describes the

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[Technical] Auto format code : matlab

5 hours ago I have most of it all vectorized and have removed all for loops except one part. I currently have one array with various values and want to create another array with consecutive numbers starting at each of the values in the first array. For example: A = [4,10,22] Say I want the next 3 numbers starting at each value in A. This would mean I want:

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Write data to text file MATLAB fprintf MathWorks Italia

3 hours agoFormat of the output fields, specified using formatting operators. formatSpec also can include ordinary text and special characters.. If formatSpec includes literal text representing escape characters, such as \n, then fprintf translates the escape characters.. formatSpec can be a character vector in single quotes, or, starting in R2016b, a string scalar.

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Changing Cell Format for Excel using MATLAB MATLAB

6 hours ago Changing Cell Format for Excel using MATLAB. Learn more about exporting to excel and again save as new excel sheet. In which i had some number in decimal format in the order of 3.8700e+11. when I put the data in Excel using following command All I need to do is, If I can change the format of cell to Scientific, Excel can easily print

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Display number with engineering notation MATLAB Answers

3 hours ago Try sprintf with a format string. It converts the number to a text string with a format of your choosing. Some built in MATLAB functions use this trick, for example, edit the code for dlmread. 1 Comment. Show Hide None. Jared on 8 Nov 2011.

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Read data from text file MATLAB fscanf MathWorks Australia

2 hours ago Fields and Characters to Ignore. fscanf reads all numeric values and characters in your file in sequence, unless you tell it to ignore a particular field or a portion of a field. To skip fields, insert an asterisk (*) after the percent sign (%).For example, to skip integers, specify %*d.. Field Width. To specify the maximum number of digits or text characters to read at a time, insert a number

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Frequently Asked Questions

What is the default number format in MATLAB?

By default, MATLAB ® uses a 5-digit short format to display numbers. For example, You can change the display in the Command Window or Editor using the format function. Using the format function only sets the format for the current MATLAB session.

What do you use to format text in MATLAB?

To convert data to text and control its format, you can use formatting operators with common conversion functions, such as num2str and sprintf . These operators control notation, alignment, significant digits, and so on. They are similar to those used by the printf function in the C programming language.

How to format numbers with thousands separators in MATLAB?

One way to format numbers with thousands separators is to call the Java locale-aware formatter. The " formatting numbers " article at the "Undocumented Matlab" blog explains how to do this: where the char (…) converts the Java string to a Matlab string.

How to find the format in MATLAB preferences?

The specified format applies only to the current MATLAB session. To maintain a format across sessions, use MATLAB preferences. To see which typeis currently in use, type get(0,'Format') To see if compactor looseformatting is currently selected, type get(0,'FormatSpacing').

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Matlab Format Number Of Digits

Listing Results Matlab Format Number Of Digits

Display Format for Numeric Values MATLAB & Simulink

8 hours ago By default, MATLAB ® uses a 5-digit short format to display numbers. For example, x = 4/3. x = 1.3333. You can change the display in the Command Window or Editor using the format function. format long x. x = 1.333333333333333. Using the format function only sets the format for the current MATLAB

Read more

See Also: Matlab format number of digits  Show details

Set output display format for Command Window MATLAB format

3 hours agoMATLAB always displays integer data types to the appropriate number of digits for the data type. For example, MATLAB uses 3 digits to display int8 data types (for instance, -128:127). Setting the output format to short or long does not affect the display of integer-type variables. Integer-valued, floating-point numbers with a maximum of 9

Read more

See Also: Matlab display number format  Show details

Formatting Text MATLAB & Simulink

3 hours ago Precision. The precision field in a formatting operator is a nonnegative integer that immediately follows a period. For example, in the operator %7.3f, the precision is 3.For the %g operator, the precision indicates the number of significant digits to display. For the %f, %e, and %E operators, the precision indicates how many digits to display to the right of the decimal point.

Alarm: \a

Backslash: \\

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How do I change the number display MATLAB & Simulink

2 hours ago None of the display formats show all of the digits. "long g" format comes closest but is 1 digit short of uniquely identifying the stored binary. You will need to use fprintf to request 16 digits. If you are using MS Windows then you cannot count on fprintf for this purpose and you should look in the File Exchange for num2strexact

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Format Numbers in a Table MATLAB & Simulink

1 hours ago Generate a 4-by-4 array of random numbers. Initialize the random number generator using a seed of 1, so that each time the example runs, rand produces the same numbers. format long rng ( "default" ); rng (1); randNumbers = rand (4) randNumbers = 4×4 0.417022004702574 0.146755890817113 0.396767474230670 0.204452249731517 0.720324493442158 0

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formatting MATLAB fprintf Increase Number of Digits of

7 hours ago I put together a "one-liner" (spread across several lines for better readability) that takes an array, a single number format, and a delimiter and returns the desired string. And while you found the leading blank-space flag, I prefer the + flag, though the function will work with both:

Reviews: 1

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How Many Digits to Write? » Loren on the Art of MATLAB

Just NowNumber of Digits. We can use eps (x) to help us figure out how many digits to print after the decimal place. First find total number of digits, base 10: log10 (eps (snglpi)) log10 (eps (dblpi)) ans = -6.62266 ans = -15.352529778863. To get to a positive number of digits, simply negate the results.

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format (MATLAB Functions)

3 hours agoMATLAB always displays integer variables to the appropriate number of digits for the class. For example, MATLAB uses three digits to display numbers of type int8 (i.e., -128:127). Setting format to short or long does not affect the display of integer variables. The specified format applies only to the current MATLAB session.

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MATLAB's accuracy of digits number MATLAB Answers

7 hours ago The Symbolic Math Toolbox™ can handle the 25 digits, some of their functions have default digit number of 32 digits. Thanks a lot for your answers. My field, which i use such a number of digits, is satellite orbit determination and gravity field modeling. For …

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how to calculate the number of digits MATLAB & Simulink

1 hours ago If you are on MS Windows then you need to get num2strexact () from the File Exchange. Then you can. a = 1.6556; splt = regexprep (num2strexact (a), '^ [^.]*\.', ''); dps = str2double (splt); You will find that the answer is approximately 6.556e+51 and that the exact answer, available as a string in splt,

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Changing number of digits MATLAB Answers MATLAB Central

9 hours ago Here is one way to display the first 6 digits of pi (after the decimal place) sprintf( '%6f' ,pi) See the details, e.g. format specification, in the documentation for sprintf .

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Changing number of digits MATLAB Answers MATLAB Central

9 hours ago Here is one way to display the first 6 digits of pi (after the decimal place) sprintf( '%6f' ,pi) See the details, e.g. format specification, in the documentation for sprintf .

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matlab how to change the number of digits after decimal

5 hours ago "help format" is what you are looking for. > > Hi frens, > > can anyone let me know how to change the number of digits after > decimal point? i am using Matlab 6.5 version and by default it is > giveing only 4 digits after decimal point, for eg: xx.xxxx > For one of my applications i need a precision upto 8 digits ie xx.xxxxxxxx

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Change variable precision used MATLAB digits MathWorks

Just Now Guard Digits. The number of digits that you specify using the vpa function or the digits function is the guaranteed number of digits. Internally, the toolbox can use a few more digits than you specify. These additional digits are called guard digits.For example, set the number of digits to 4, and then display the floating-point approximation of 1/3 using four digits:

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change the number of digits after decimal point MATLAB

1 hours ago Hi I'm looking for b but sprintf is to transform the data to string which isn't my interest fprintf for displaying and i used format short in the command window but nothing is change. I need to transform all the values in the matrix with only 4 digits numbers and not 15 because i will do a treatement on it so it isn't a problem of displaying

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How to count digits of a number in easy way? MATLAB

7 hours ago Commented: Jan on 23 May 2018. Hi first of all I am a beginner :D. I don't know much about matlab. I want to know how can you count digits of a number in matlab in an easy way. i found this : A=input ('enter a number'); max (ceil (log10 (abs (A))),1) But I'm not allowed to use it. It should be easy and should containing while,if,

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Change variable precision used MATLAB digits MathWorks

Just Now Guard Digits. The number of digits that you specify using the vpa function or the digits function is the guaranteed number of digits. Internally, the toolbox can use a few more digits than you specify. These additional digits are called guard digits.For example, set the number of digits to 4, and then display the floating-point approximation of 1/3 using four digits:

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How to change the number format of an excel sheet using

4 hours ago I am developing a m script which would write data into the excel sheet using ActiveX. I am able to select a range and change the Number format to 'Text'. But I would like to know how do I change the Number format of the whole excel sheet? why I need this? -- Number Format 'General' shows Revision 1.1 and 1.10 as 1.1

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Counting the number of digits MATLAB Answers MATLAB

2 hours ago For example, in OP's example inputting A = 12875 will output 5 for the number of digits, as desired. And A = -99.3 will output 3. If you don't want to include the digits after the decimal anyway then you can always truncate A using fix(); or set the fixed-point to 0 like so:

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MATLAB Format and Display Precision Help

2 hours ago The loose display of output can be tightened up by the MATLAB command: >> format compact. There are some more suboptions of the format command which you can find by. >> help format. (here ">> " is the MATLAB prompt in my session. If you want to display an output with other than 5 or 15 digits, than you have to use the formatted print command

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how to round number in table to two digit number MATLAB

2 hours ago Copy to Clipboard. Data = table ( round (f,2), round (u,2)) However, you need to distinguish between what is stored and how it is displayed. MATLAB uses IEEE 754 Double Precision for values like 0.38878 and those are represented by 53 bits of precision in binary. It is not possible to exactly represent 1/10 in binary, so even though you might

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4 hours ago I have a column of numbers with the following format: 12345678 I want to extract digits 56 and digits 78 . in a way similar to the mid and right functions in excel .

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Mostrar el formato de valores numéricos MATLAB

7 hours ago By default, MATLAB ® uses a 5-digit short format to display numbers. For example, x = 4/3. x = 1.3333. You can change the display in the Command Window or Editor using the format function. format long x. x = 1.333333333333333. Using the format function only sets the format for the current MATLAB

Read more

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change the number of digits after decimal point MATLAB

1 hours ago Hi I'm looking for b but sprintf is to transform the data to string which isn't my interest fprintf for displaying and i used format short in the command window but nothing is change. I need to transform all the values in the matrix with only 4 digits numbers and not 15 because i will do a treatement on it so it isn't a problem of displaying

Read more

See Also: Databases  Show details

Counting the number of digits MATLAB Answers MATLAB

2 hours ago For example, in OP's example inputting A = 12875 will output 5 for the number of digits, as desired. And A = -99.3 will output 3. If you don't want to include the digits after the decimal anyway then you can always truncate A using fix(); or set the fixed-point to 0 like so:

Read more

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Sum the digits of a number? MATLAB Answers MATLAB Central

Just Now Hi, I'd like to know how can someone add the digits of a number to the final point in matlab. For example 525 --> 5 + 2 + 5 = 12 --> 1 + 2 = 3 I'm thinking about dividing by ten and adding the digits after the decimal point while at the same time round the number.

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How can I change the way MATLAB displays the significant

2 hours ago The FORMAT function allows users to set the default display method for floating point numbers in MATLAB. The options for format are: FORMAT Default.

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Why I can't display all the decimal digits in a plot

6 hours ago The better solution is just update the number of decimal points in "text function". In data cursor mode, right click and select "edit text update function", in the variable output_txt= 'X: '. num2str(pos(1),4)]; update the 4 to 6 or 10, this defines total number of digits on the X axis data display.

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Format Numbers in a Table MATLAB & Simulink MathWorks

Just Now Generate a 4-by-4 array of random numbers. Initialize the random number generator using a seed of 1, so that each time the example runs, rand produces the same numbers. format long rng ( "default" ); rng (1); randNumbers = rand (4) randNumbers = 4×4 0.417022004702574 0.146755890817113 0.396767474230670 0.204452249731517 0.720324493442158 0

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Get the specific digit of a number MATLAB Answers

8 hours ago Answers (2) MATLAB does not allow you to use "==" to compare to two different values at once. Something of the form A==BC where you want to compare to B or C, can be rewritten as A==BA==C. Wrong syntax for the combined logical operation and you're looking for what's left over to get the last digit, not the modulo value

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Write data to text file MATLAB fprintf MathWorks Australia

3 hours ago %4.2f in the formatSpec input specifies that the first value in each line of output is a floating-point number with a field width of four digits, including two digits after the decimal point.%8.3f in the formatSpec input specifies that the second value in each line of output is a floating-point number with a field width of eight digits, including three digits after the decimal point.

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Frequently Asked Questions

What is the default number format in MATLAB?

By default, MATLAB ® uses a 5-digit short format to display numbers. For example, You can change the display in the Command Window or Editor using the format function. Using the format function only sets the format for the current MATLAB session.

Which is the correct format for integer variables in MATLAB?

MATLAB always displays integer variables to the appropriate number of digits for the class. For example, MATLAB uses three digits to display numbers of type int8 (i.e., -128:127). Setting format to short or long does not affect the display of integer variables.

How to show certain number of decimal digits in MATLAB?

Edit: If you want to do it for matrices, I'm not sure if there's a better way but you could just loop over the rows given x as a matrix: You have control over the command window using the format command.

When do you use more than four digits in MATLAB?

For example, set the number of digits to 4, and then display the floating-point approximation of 1/3 using four digits: Now, display a using 20 digits. The result shows that the toolbox internally used more than four digits when computing a. The last digits in the following result are incorrect because of the round-off error:

Sours: https://www.webcontactus.com/matlab-format-number-of-digits/

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Format Output

MATLAB® displays output in both the Command Window and the Live Editor. You can format the output display using several provided options.

Format Line Spacing in Output

By default, MATLAB displays blanks lines in Command Window output.

You can select one of two line spacing options in MATLAB.

  • — Keeps the display of blank lines (default).

    >> x = [4/3 1.2345e-6] x = 1.3333 0.0000
  • — Suppresses the display of blank lines.

    >> x = [4/3 1.2345e-6] x = 1.3333 0.0000

To change the line spacing option, do one of the following:

  • On the Home tab, in the Environment section, click Preferences. Select > , and then choose a Line spacing option.

  • Use the function at the command line, for example:

    format loose format compact

Note

Line spacing options do not apply in the Live Editor.

Format Floating-Point Numbers

You can change the way numbers display in both the Command Window and the Live Editor. By default, MATLAB uses the short format (5-digit scaled, fixed-point values).

For example, suppose that you enter in the Command Window. The MATLAB output display depends on the format you selected. This table shows some of the available numeric display formats, and their corresponding output.

Numeric Display FormatExample Output

(default)

Note

The text display format affects only how numbers are shown, not how MATLAB computes, or saves them.

To format the way numbers display, do one of the following:

  • On the Home tab, in the Environment section, click Preferences. Select > , and then choose a Numeric format option.

  • Use the function, for example:

    format short format shorte format long

    See the reference page for a list and description of all supported numeric formats.

Wrap Lines of Code to Fit Window Width

A line of code or its output can exceed the width of the Command Window, requiring you to use the horizontal scroll bar to view the entire line. To break a single line of input or output into multiple lines to fit within the current width of the Command Window:

  1. On the Home tab, in the Environment section, click Preferences. Select > .

  2. Select Wrap Lines.

  3. Click OK.

Note

Line wrapping options do not apply in the Live Editor.

Suppress Output

To suppress code output, add a semicolon (;) to the end of a command. This is useful when code generates large matrices.

Running the following code creates , but does not show the resulting matrix in the Command Window or the Live Editor:

View Output by Page

Output in the Command Window might exceed the visible portion of the window. You can view the output, one screen at a time:

  1. In the Command Window, type to enable paged output.

  2. Type the command that generates large output.

  3. View the output:

    • Advance to the next line by pressing Enter.

    • Advance to the next page by pressing Space Bar.

    • Stop displaying the output by pressing q.

To disable paged output, type .

Note

Paged output options do not apply in the Live Editor.

Clear the Command Window

If the Command Window seems cluttered, you can clear all the text (without clearing the workspace) by doing one of the following:

  • On the Home tab, in the Code section, select > to clear the Command Window scroll buffer.

  • Use the function to clear the Command Window scroll buffer.

  • Use the function to clear your current view of the Command Window, without clearing the scroll buffer.

See Also

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Sours: https://www.mathworks.com/help/matlab/matlab_env/format-output.html

Number matlab format

Format Numbers in a Table

Generate Random Numbers

Generate a 4-by-4 array of random numbers. Initialize the random number generator using a seed of , so that each time the example runs, produces the same numbers.

format long rng("default"); rng(1); randNumbers = rand(4)
randNumbers = 4×4 0.417022004702574 0.146755890817113 0.396767474230670 0.204452249731517 0.720324493442158 0.092338594768798 0.538816734003357 0.878117436390945 0.000114374817345 0.186260211377671 0.419194514403295 0.027387593197926 0.302332572631840 0.345560727043048 0.685219500396759 0.670467510178402

The numbers display with a precision of 15 digits after the decimal point.

Create a Document

Import the DOM package so that you do not have to use long, fully-qualified class names.

Create a PDF document. To create a Microsoft® Word, HTML, or single-file HTML document, change " to ", ", or ", respectively.

d = Document("randomnumbers","pdf");

Create a Table

Create a DOM table from the array of random numbers.

Specify the Table Style

Specify that numbers in the table have a precision of 3 digits after the decimal point by using an object. Specify the table width, border, and column and row separators.

t.Style = [t.Style {NumberFormat("%1.3f"),... Width("100%"),... Border("solid"),... ColSep("solid"),... RowSep("solid")}];

Center the table entries in the table cells.

t.TableEntriesHAlign = "center";

Generate the Report

Append the table to the document. Close and view the document.

append(d,t); close(d); rptview(d);

See Also

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Related Topics

Sours: https://www.mathworks.com/help/rptgen/ug/format_numbers_in_a_table.html
Matlab Graph Axis Number Format

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Formatting Text

To convert data to text and control its format, you can use formatting operators with common conversion functions, such as and . These operators control notation, alignment, significant digits, and so on. They are similar to those used by the function in the C programming language. Typical uses for formatted text include text for display and output files.

For example, converts floating-point values to text using fixed-point notation. Adjust the format by adding information to the operator, such as to represent two digits after the decimal mark, or to represent 12 characters in the output, padding with spaces as needed.

A = pi*ones(1,3); txt = sprintf('%f | %.2f | %12f', A)
txt = '3.141593 | 3.14 | 3.141593'

You can combine operators with ordinary text and special characters in a format specifier. For instance, inserts a newline character.

txt = sprintf('Displaying pi: \n %f \n %.2f \n %12f', A)
txt = 'Displaying pi: 3.141593 3.14 3.141593'

Functions that support formatting operators are , , , , and the error handling functions , , , and .

Fields of the Formatting Operator

A formatting operator can have six fields, as shown in the figure. From right to left, the fields are the conversion character, subtype, precision, field width, flags, and numeric identifier. (Space characters are not allowed in the operator. They are shown here only to improve readability of the figure.) The conversion character is the only required field, along with the leading character.

Conversion Character

The conversion character specifies the notation of the output. It consists of a single character and appears last in the format specifier.

Specifier

Description

Single character.

Decimal notation (signed).

Exponential notation (using a lowercase , as in ).

Exponential notation (using an uppercase , as in ).

Fixed-point notation.

The more compact of or . (Insignificant zeroes do not print.)

Same as , but using an uppercase .

Octal notation (unsigned).

Character vector or string array.

Decimal notation (unsigned).

Hexadecimal notation (unsigned, using lowercase letters –).

Hexadecimal notation (unsigned, using uppercase letters –).

For example, format the number 46 using different conversion characters to display the number in decimal, fixed-point, exponential, and hexadecimal formats.

A = 46*ones(1,4); txt = sprintf('%d %f %e %X', A)
txt = '46 46.000000 4.600000e+01 2E'

Subtype

The subtype field is a single alphabetic character that immediately precedes the conversion character. Without the subtype field, the conversion characters , , , and treat input data as integers. To treat input data as floating-point values instead and convert them to octal, decimal, or hexadecimal representations, use one of following subtype specifiers.

The input data are double-precision floating-point values rather than unsigned integers. For example, to print a double-precision value in hexadecimal, use a format like .

The input data are single-precision floating-point values rather than unsigned integers.

Precision

The precision field in a formatting operator is a nonnegative integer that immediately follows a period. For example, in the operator , the precision is . For the operator, the precision indicates the number of significant digits to display. For the , , and operators, the precision indicates how many digits to display to the right of the decimal point.

Display numbers to different precisions using the precision field.

txt = sprintf('%g %.2g %f %.2f', pi*50*ones(1,4))
txt = '157.08 1.6e+02 157.079633 157.08'

While you can specify the precision in a formatting operator for input text (for example, in the operator), there is usually no reason to do so. If you specify the precision as , and is less than the number of characters in the input text, then the output contains only the first characters.

Field Width

The field width in a formatting operator is a nonnegative integer that specifies the number of digits or characters in the output when formatting input values. For example, in the operator , the field width is .

Specify different field widths. To show the width for each output, use the character. By default, the output text is padded with space characters when the field width is greater than the number of characters.

txt = sprintf('|%e|%15e|%f|%15f|', pi*50*ones(1,4))
txt = '|1.570796e+02| 1.570796e+02|157.079633| 157.079633|'

When used on text input, the field width can determine whether to pad the output text with spaces. If the field width is less than or equal to the number of characters in the input text, then it has no effect.

txt = sprintf('%30s', 'Pad left with spaces')
txt = ' Pad left with spaces'

Flags

Optional flags control additional formatting of the output text. The table describes the characters you can use as flags.

Character

Description

Example

Minus sign ()

Left-justify the converted argument in its field.

Plus sign ()

For numeric values, always print a leading sign character ( or ).
For text values, right-justify the converted argument in its field.


Space

Insert a space before the value.

Zero ()

Pad with zeroes rather than spaces.

Pound sign ()

Modify selected numeric conversions:

  • For , , or , print , , or prefix.

  • For , , or , print decimal point even when precision is 0.

  • For or , do not remove trailing zeroes or decimal point.

Right- and left-justify the output. The default behavior is to right-justify the output text.

txt = sprintf('right-justify: %12.2f\nleft-justify: %-12.2f',... 12.3, 12.3)
txt = 'right-justify: 12.30 left-justify: 12.30 '

Display a sign for positive numbers. The default behavior is to omit the leading sign for positive numbers.

txt = sprintf('no sign: %12.2f\nsign: %+12.2f',... 12.3, 12.3)
txt = 'no sign: 12.30 sign: +12.30'

Pad to the left with spaces and zeroes. The default behavior is to pad with spaces.

txt = sprintf('Pad with spaces: %12.2f\nPad with zeroes: %012.2f',... 5.2, 5.2)
txt = 'Pad with spaces: 5.20 Pad with zeroes: 000000005.20'

Note

You can specify more than one flag in a formatting operator.

Value Identifiers

By default, functions such as insert values from input arguments into the output text in sequential order. To process the input arguments in a nonsequential order, specify the order using numeric identifiers in the format specifier. Specify nonsequential arguments with an integer immediately following the sign, followed by a sign.

Ordered SequentiallyOrdered By Identifier
sprintf('%s %s %s',... '1st','2nd','3rd') ans = '1st 2nd 3rd'
sprintf('%3$s %2$s %1$s',... '1st','2nd','3rd') ans = '3rd 2nd 1st'

Special Characters

Special characters can be part of the output text. But because they cannot be entered as ordinary text, they require specific character sequences to represent them. To insert special characters into output text, use any of the character sequences in the table.

Special Character

Representation in Format Specifier

Single quotation mark

Percent character

Backslash

Alarm

Backspace

Form feed

New line

Carriage return

Horizontal tab

Vertical tab

Character whose Unicode® numeric value can be represented by the hexadecimal number,

Example: returns

Character whose Unicode numeric value can be represented by the octal number,

Example: returns

Setting Field Width and Precision

The formatting operator follows a set of rules for formatting output text to the specified field width and precision. You also can specify values for the field width and precision outside the format specifier, and use numbered identifiers with the field width and precision.

Rules for Formatting Precision and Field Width

The figure illustrates how the field width and precision settings affect the output of the formatting functions. In this figure, the zero following the sign in the formatting operator means to add leading zeroes to the output text rather than space characters.

  • If the precision is not specified, then it defaults to six.

  • If the precision is less than the number of digits in the fractional part of the input, then only digits are shown after the decimal point. The fractional value is rounded in the output.

  • If the precision is greater than the number of digits in the fractional part of the input, then digits are shown after the decimal point. The fractional part is extended to the right with zeroes in the output.

  • If the field width is not specified, then it defaults to , where is the number of digits in the whole part of the input value.

  • If the field width is greater than , then the whole part of the output value is padded to the left with additional characters. The additional characters are space characters unless the formatting operator includes the flag. In that case, the additional characters are zeroes.

Specify Field Width and Precision Outside Format Specifier

You can specify the field width and precision using values from a sequential argument list. Use an asterisk () in place of the field width or precision fields of the formatting operator.

For example, format and display three numbers. In each case, use an asterisk to specify that the field width or precision come from input arguments that follow the format specifier.

txt = sprintf('%*f %.*f %*.*f',... 15,123.45678,... 3,16.42837,... 6,4,pi)
txt = ' 123.456780 16.428 3.1416'

The table describes the effects of each formatting operator in the example.

Formatting Operator

Description

Specify width as the following input argument, .

Specify precision as the following input argument, .

Specify width and precision as the following input arguments, , and .

You can mix the two styles. For example, get the field width from the following input argument and the precision from the format specifier.

txt = sprintf('%*.2f', 5, 123.45678)

Specify Numbered Identifiers in Width and Precision Fields

You also can specify field width and precision as values from a nonsequential argument list, using an alternate syntax shown in the figure. Within the formatting operator, specify the field width and precision with asterisks that follow numbered identifiers and signs. Specify the values of the field width and precision with input arguments that follow the format specifier.

For example, format and display three numbers. In each case, use a numbered identifier to specify that the field width or precision come from input arguments that follow the format specifier.

txt = sprintf('%1$*4$f %2$.*5$f %3$*6$.*7$f',... 123.45678, 16.42837, pi, 15, 3, 6, 4)
txt = ' 123.456780 16.428 3.1416'

The table describes the effect of each formatting operator in the example.

Formatting Operator

Description

specifies the first input argument, , as the value

specifies the fourth input argument, , as the field width

specifies the second input argument, , as the value

specifies the fifth input argument, , as the precision

specifies the third input argument, , as the value

specifies the sixth input argument, , as the field width

specifies the seventh input argument, , as the precision

Restrictions on Using Identifiers

If any of the formatting operators include an identifier field, then all the operators in the format specifier must include identifier fields. If you use both sequential and nonsequential ordering in the same function call, then the output is truncated at the first switch between sequential and nonsequential identifiers.

Valid SyntaxInvalid Syntax
sprintf('%d %d %d %d',... 1,2,3,4) ans = '1 2 3 4'
sprintf('%d %3$d %d %d',... 1,2,3,4) ans = '1 '

If your function call provides more input arguments than there are formatting operators in the format specifier, then the operators are reused. However, only function calls that use sequential ordering reuse formatting operators. You cannot reuse formatting operators when you use numbered identifiers.

Valid SyntaxInvalid Syntax
sprintf('%d',1,2,3,4) ans = '1234'
sprintf('%1$d',1,2,3,4) ans = '1'

If you use numbered identifiers when the input data is a vector or array, then the output does not contain formatted data.

Valid SyntaxInvalid Syntax
v = [1.4 2.7 3.1]; sprintf('%.4f %.4f %.4f',v) ans = '1.4000 2.7000 3.1000'
v = [1.4 2.7 3.1]; sprintf('%3$.4f %1$.4f %2$.4f',v) ans = 1×0 empty char array

See Also

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Related Topics

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MATLAB Function ReferencePrevious page   Next Page
format

Set display format for output

Graphical Interface

As an alternative to , use preferences. Select Preferences from the File menu in the MATLAB desktop and use Command Window preferences.

Syntax

  • format format format('')

Description

Use the function to control the output format of numeric values displayed in the Command Window.

    Note    The function affects only how numbers are displayed, not how MATLAB computes or saves them.

by itself, changes the output format to the default appropriate for the class of the variable currently being used. For floating-point variables, for example, the default is (i.e., 5-digit scaled, fixed-point values).

changes the format to the specified . The tables shown below list the allowable values for .

is the function form of the syntax.

The tables below show the allowable values for , and provides an example for each type using .

Use these format types to switch between different output display formats for floating-point variables.

Type
Result
Example

Scaled fixed point format, with 5 digits


Scaled fixed point format, with 15 digits for double; 7 digits for single.


Floating point format, with 5 digits.


Floating point format, with 15 digits for double; 7 digits for single.


Best of fixed or floating point, with 5 digits.


Best of fixed or floating point, with 15 digits for double; 7 digits for single.


Engineering format that has at least 5 digits and a power that is a multiple of three


Engineering format that has exactly 16 significant digits and a power that is a multiple of three

Use these format types to switch between different output display formats for all numeric variables.

Value for type
Result
Example

+, -, blank


Fixed dollars and cents


Hexadecimal (hexadecimal representation of a binary double-precision number)


Ratio of small integers

Use these format types to used to affect the spacing in the display of all variables.

Value for type
Result
Example

Suppresses excess line feeds to show more output in a single screen. Contrast with .




Adds linefeeds to make output more readable. Contrast with .





Remarks

Computations on floating-point variables, namely or , are done in appropriate floating-point precision, no matter how those variables are displayed. Computations on integer variables are done natively in integer.

MATLAB always displays integer variables to the appropriate number of digits for the class. For example, MATLAB uses three digits to display numbers of type (i.e., -128:127). Setting to or does not affect the display of integer variables.

The specified format applies only to the current MATLAB session. To maintain a format across sessions, use MATLAB preferences.

To see which is currently in use, type

To see if or formatting is currently selected, type

Examples

Example 1

Change the format to by typing

View the result for the value of by typing

  • pi ans = 3.14159265358979

View the current format by typing

  • get(0,'format') ans = long

Set the format to by typing

or use the function form of the syntax

Example 2

When the format is set to , both and display as 5-digit values:

  • format short pi ans = 3.1416 single(pi) ans = 3.1416

Now set format to , and displays a 15-digit value while display an 8-digit value:

  • format long pi ans = 3.14159265358979 single(pi) ans = 3.1415927

Example 3

Set the format to its default, and display the maximum values for integers and real numbers in MATLAB:

  • format intmax('uint64') ans = 18446744073709551615 realmax ans = 1.7977e+308

Now change the format to hexadecimal, and display these same values:

  • format hex intmax('uint64') ans = ffffffffffffffff realmax ans = 7fefffffffffffff

The hexadecimal display corresponds to the internal representation of the value. It is not the same as the hexadecimal notation in the C programming language.

Example 4

This example illustrates the and formats. The value assigned to variable increases by a multiple of 10 each time through the loop.

  • A = 5.123456789; for k=1:10 disp(A) A = A * 10; end

The values displayed for are shown here. The power of 10 is always a multiple of 3. The value itself is expressed in 5 or more digits for the format, and in exactly 15 digits for :

  • format short eng format long eng 5.1235e+000 5.12345678900000e+000 51.2346e+000 51.2345678900000e+000 512.3457e+000 512.345678900000e+000 5.1235e+003 5.12345678900000e+003 51.2346e+003 51.2345678900000e+003 512.3457e+003 512.345678900000e+003 5.1235e+006 5.12345678900000e+006 51.2346e+006 51.2345678900000e+006 512.3457e+006 512.345678900000e+006 5.1235e+009 5.12345678900000e+009

Algorithms

If the largest element of a matrix is larger than 103 or smaller than 10-3, MATLAB applies a common scale factor for the short and long formats. The function displays +, -, and blank characters for positive, negative, and zero elements. displays the hexadecimal representation of a binary double-precision number. uses a continued fraction algorithm to approximate floating-point values by ratios of small integers. See for the complete code.

See Also

, , , , , , , , , ,


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