MATLAB: Do I get warnings related to locale database with compiled applications

MATLAB

I have built a compiled application using MATLAB. When I run it, I get the following warnings:

 fl:i18n:InvalidLocaleDatabase - The locale database is invalid. The MATLAB p
 rocess default locale is set to "en_US.US-ASCII".

In R2010b and releases prior to it, the error message is:

 MATLAB:I18n:InvalidLocaleDatabase - The locale database is invalid. The MATLAB p
 rocess default locale is set to "en_US.US-ASCII".

Best Answer

The valid character sets supported by MATLAB are:

1. US-ASCII

2. UTF-8

3. Shift_JIS

4. ISO-8859-1

To avoid the warning messages, please modify your MATLAB code to direct MATLAB to use one of the supported character sets, for example, the UTF-8 character set. This can be done by invoking the FEATURE command as follows:

feature('DefaultCharacterSet','UTF8')

Related Solutions

MATLAB: Do Turkish Characters appear as question marks “?” in MATLAB 7.4 (R2007a) on Windows

MATLAB can use the UTF-8 character sets for different languages, however, MATLAB uses the Operating System specific User and System Locale and Regional settings for Locale initialization.

A Locale is a sub-set of user environment definition and defines language territory and codeset. Locale initialization mechanism in the MATLAB process retrieves the user specified locale setting from the operating system and sets it in the MATLAB process.

If the specified locale is not supported by MATLAB, the locale initialization mechanism sets the MATLAB default locale, which is en_US.US_ASCII.

To workaround this issue, the appropriate Locale settings should be defined in the system settings.

For example, in Windows XP, do the following:

1. Go to Start--> Control Panel--> Regional and Language Options.

2. Set the correct language for user locale settings in the Regional Options tab.

3. Set the correct language for system locale settings in the Advanced tab.

For information on how to set user and system locales on Mac and UNIX platforms, refer to the related solutions below.

MATLAB: Do I receive character incompatibility errors when loading a model in Simulink 6.0 (R14)

This bug has been fixed for Release 14 (R14). For previous releases, please read below for any possible workarounds:

In order for the Simulink to correctly handle strings containing non-ASCII characters, the model loader will pre-scan an MDL-file for non-ASCII characters. If any such characters are found and are inconsistent with the current MATLAB encoding setting, model loading will stop and the warning described above will be displayed.

The SLCHARACTERENCODING function forces Simulink to use a different character encoding than the one that MATLAB is using. If it is likely that the extended characters come from a European character set, use the command:

slCharacterEncoding('ISO-8859-1');

If it is likely that the extended characters come from an Asian character set, use the command:

slCharacterEncoding('Shift_JIS');

This command will only be active for the current MATLAB session. If you will frequently be loading models from a non-ASCII character set, you should place this command in your startup.m file so that it is loaded every time that MATLAB is started. See the following URL for more information on how to do this:

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/startup.shtml

Note that the documentation for SLCHARACTERENCODING command is missing in Simulink 6.0 (R14). The following is the documentation for SLCHARACTERENCODING.

 SLCHARACTERENCODING: Change the MATLAB character set encoding. 
If you have a model containing non-ASCII characters, you need to change the MATLAB 
 character set encoding to be compatible with these characters before loading the model.  
 Currently, we support: US-ASCII, UTF-8, Shift_JIS, ISO-8859-1.
    Note: You need to close all open models or libraries before changing the MATLAB
    character set encoding except when changing from 'US-ASCII' to another encoding.
    Examples:
    slCharacterEncoding()                  % return the current MATLAB character
                                                          % set encoding
    slCharacterEncoding('Shift_JIS')       % change the MATLAB character set encoding
                                                                % to Shift_JIS

Best Answer

Related Solutions

MATLAB: Do Turkish Characters appear as question marks “?” in MATLAB 7.4 (R2007a) on Windows

MATLAB: Do I receive character incompatibility errors when loading a model in Simulink 6.0 (R14)

Related Question