Workspace and Variable Preferences- MATLAB & Simulink (2024)

Workspace and Variable Preferences

Workspace Preferences

Workspace preferences enable you to configure options for savingworkspace variables to MATLAB^® scripts. They also enable you torestrict the size of arrays on which MATLAB performs calculations,and to specify if you want those calculations to include or ignore NaNs.

To open Workspace preferences, on the Home tab, in the Environment section, click Preferences. Select MATLAB > Workspace.

Preference	Usage
Threshold for saving variables to MATLAB script	Specify Maximum array size to limit the number of elements of arrays saved to a MATLAB script.
Threshold for saving variables to MATLAB script	Specify Maximum struct/object nesting levels to limit the nesting level of structures, arrays, or objects saved to a MATLAB script.
Multidimensional array formatting	Specify how multidimensional arrays are formatted when saved to a MATLAB script. To create a compact script, select Row vector with reshape (compactness and efficiency). To retain array representation, select As 2-D pages (readability). Specify the dimensions of a 2-D slice as positive integers less than or equal to the dimensions of the `n`-D array. The second integer must be greater than the first.
File formatting	Set the character width at which text in the MATLAB script is wrapped by specifying Maximum characters per line.
Statistical calculations	Set the maximum array size to display statistics for in the Workspace browser using the element and smaller arrays show statistics option. Excluding large arrays from statistical calculations improves Workspace browser performance. For more information, see Display Statistics in the Workspace Browser.
Statistical calculations	Specify whether `NaN` values are included or excluded from calculations for the statistics displayed in the Workspace browser. Select Use NaNs when calculating statistics to include `NaN` values or Ignore NaNs when calculating statistics to exclude `NaN` values. For more information, see Display Statistics in the Workspace Browser.
MATLAB array size limit	By default, MATLAB can use up to 100% of the size of RAM (not including virtual memory) of your computer to allocate memory for each MATLAB array. To change this limit to a smaller percentage, select the Limit the maximum array size to a percentage of RAM check box. Then move the slider to adjust the percentage of RAM. To allow MATLAB to use both RAM and virtual memory when creating an array, clear the Limit the maximum array size to a percentage of RAM check box. If MATLAB attempts to allocate memory that exceeds the resources available on the computer, your system might become nonresponsive. This limit applies to the size of each array, not the total size of all MATLAB arrays.

Variables Preferences

When working in the Variables editor, Variables preferencesenable you to specify array formatting, cursor movement, and the decimalseparator for exporting data using the system clipboard.

To open Variables preferences, on the Home tab,in the Environment section, click Preferences.Select MATLAB > Variables.

Preference	Usage
Format	Select an option from the Default array format to specify the default array output format of numeric values displayed in the Variables editor. This format preference affects only how numbers display, not how MATLAB computes or saves them. For information on formatting options, see the reference page for the format function.
Editing	Specify where the cursor moves to after you type an elementand press Enter. Tokeep the cursor in the element where you typed, clear the Move selection after Enter check box. Tomove the cursor to another element, select the Moveselection after Enter check box. In the Direction field, specify how you want thecursor to move.
International number handling	In the Decimal separator for exporting numericdata via system clipboard field, specify the decimal separatorfor numbers you cut or copy from the Variables editor and then pasteinto text files or other applications. This preferencehas no effect on numeric data copied from and pasted into MATLAB.Within MATLAB, decimal separators are always periods.

Preference

Usage

Format

Select an option from the Default array format to specify the default array output format of numeric values displayed in the Variables editor. This format preference affects only how numbers display, not how MATLAB computes or saves them. For information on formatting options, see the reference page for the format function.

Editing

Specify where the cursor moves to after you type an elementand press Enter.

Tokeep the cursor in the element where you typed, clear the Move selection after Enter check box.

Tomove the cursor to another element, select the Moveselection after Enter check box. In the Direction field, specify how you want thecursor to move.

International number handling

In the Decimal separator for exporting numericdata via system clipboard field, specify the decimal separatorfor numbers you cut or copy from the Variables editor and then pasteinto text files or other applications.

This preferencehas no effect on numeric data copied from and pasted into MATLAB.Within MATLAB, decimal separators are always periods.

Some Variables preferences are not available in MATLAB Online™. To show generated code in the Command Window when performing operations in the MATLAB Online Variables Editor, select Show MATLAB code for operations.

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Workspace and Variable Preferences
- MATLAB & Simulink (2024)

FAQs

How do I get the workspace variables in MATLAB? ›

To view the variables in the workspace, use the Workspace browser. To view the contents of MAT-files, use the Details Panel of the Current Folder browser. In MATLAB Online™, to view the contents of MAT-files, preview them by clicking the Preview button to the right of the MAT-file in the Files browser.

How to clear workspace except one variable MATLAB? ›

For example, clearvars -except A* clears all variables in the workspace, except those with names that start with A . Variables with names that match the regular expressions. For example, clearvars -except -regexp ^Mon ^Tues clears all the variables in the workspace, except those with names that begin with Mon or Tues .

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What is a workspace in MATLAB? ›

The workspace contains variables that you create or import into MATLAB from data files or other programs. You can view and edit the contents of the workspace in the Workspace browser or in the Command Window.

How to use from workspace block in simulink? ›

When you use the From Workspace block to load data for an array of buses, you must specify the Output data type parameter as the Simulink. Bus object that defines the buses the array of buses contains. All buses in an array of buses must be defined by the same Simulink. Bus object.

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How do I change Simulink preferences? ›

In the Simulink Toolstrip, on the Modeling tab, in the Evaluate and Manage section, select Environment > Simulink Preferences. In Simulink Preferences, on the Editor Pane, turn off Display value of parameter when specified using variables. Click Apply.

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How to create a variable in Matlab Simulink? ›

Click the button next to the value of the Name parameter. Select Create Variable. In the Create New Data dialog box, set Value to Simulink. Breakpoint and click Create.

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How to open workspace in Matlab Simulink? ›

To open the Workspace browser if it is not currently visible, do one of the following: MATLAB Toolstrip: On the Home tab, in the Environment section, click Layout. Then, in the Show section, select Workspace.

How to save all workspace variables MATLAB? ›

To save all workspace variables to a MAT-file, on the Home tab, in the Variable section, click Save Workspace. To save a subset of your workspace variables to a MAT-file, select the variables in the Workspace browser, right-click, and then select Save As.

How do you clean the workspace in MATLAB? ›

To clear all variables from the current workspace, use clear or clearvars . To clear all global variables, use clear global or clearvars –global .

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How do I reset MATLAB preferences? ›

Close MATLAB, delete all of the files in the folder C:\Users\username\AppData\Roaming\MathWorks\MATLAB\R2021a and then start MATLAB again. MATLAB starts with all preferences set to their default values.

How do I reset the workspace layout in MATLAB? ›

MATLAB provides a set of preconfigured desktop layouts that are optimized for certain workflows. To select a preconfigured layout, on the Home tab, in the Environment section, click Layout and select a layout. To restore the MATLAB desktop to its default layout, select Default.

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How do you remove an object from a workspace in MATLAB? ›

clear obj removes obj from the MATLAB^® workspace. To remove variables from the workspace of pool or cluster workers, use parfevalOnAll and clear to preserve workspace transparency. If you try to use clear directly in a parfor -loop or spmd block, you encounter an error.

How to clear everything in MATLAB? ›

clc clears all the text from the Command Window, resulting in a clear screen. After running clc , you cannot use the scroll bar in the Command Window to see previously displayed text. You can, however, use the up-arrow key ↑ in the Command Window to recall statements from the command history.

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How do you export workspace variables in MATLAB? ›

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How do you display function variables in MATLAB workspace? ›

In order for you to see variables of a function in Matlab you have to run the code with a breakpoint set after the variable you want to see. If you just run it like this it will just run through (or crash) without the variables being saved in the workspace. sign that you have run it but without any breakpoints.

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How to get system environment variable in MATLAB? ›

val = getenv( varname ) returns the value of the operating system environment variable varname . If varname does not exist, then getenv returns an empty character vector. On UNIX^® platforms, the shell you use to start MATLAB^® determines the operating system environment.

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Workspace and Variable Preferences - MATLAB & Simulink (2024)