How to get the file path inside a script, function, or model?

How can I get the path of the script or function being executed or model being run from inside the file itself?

Answer 1

[MathWorks Support Team]

For scripts and functions:

[filepath,~,~] = fileparts(mfilename('fullpath'))

or simply

filepath = fileparts(mfilename('fullpath'))

Note:

-This works with M file scripts and functions during normal execution.

-This will not produce the desired result for MLX live scripts or in "%%" sections of scripts run individually.

-The functions used are not supported for code generation.

For live scripts (or "%%" sections of scripts):

[filepath,~,~] = fileparts(which('your_file_name'))

or simply

filepath = fileparts(which('your_file_name'))

Note:

-This requires manually entering the name of the file into 'your_file_name'.

-The more flexible approach which works for M file scripts and functions using 'mfilename' returns incorrect results for MLX live scripts and "%%" sections of scripts run individually.

-The functions used are not supported for code generation.

For Simulink models:

[path,~,~] = fileparts(which(bdroot))

or simply

path = fileparts(which(bdroot))

Note:

-This can be used in Model Callbacks, Block Callbacks, Mask Initialization, and Mask Icon & Ports.

-Using "gcs" in place of "bdroot" will not give the desired result in some circumstances, for example Block Callbacks inside subsystems.

-The functions used are not supported for code generation.

[dzid_]

which(bdroot)

Doesn't work if model is not in the path.

Instead, use:

get_param(bdroot, 'FileName');