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Check whether directory is on current MATLAB path

version 1.2 (3.36 KB) by Rody Oldenhuis
Small low-level utility to check whether (list of) directories is/are on the current search path


Updated 02 May 2020

GitHub view license on GitHub

ISONPATH checks if given directory is on the current MATLAB path. Vectorized in the sense that it accepts cell-arrays of strings.
y = ISONPATH(dirs) for string [dirs] checks whether the specified directory is on the MATLAB search path. The output [y] is a logical scalar equal to 'true' when the directory is on the path, 'false' otherwise.

In case [dirs] is a cell array of strings, the same check is performed for each entry in [dirs]. In this case, the output [y] is a logical array the same size as [dirs].

Note that a case-INsensitive comparison is used on windows platforms, while exact case match is required for Linux/Mac platforms.

Cite As

Rody Oldenhuis (2020). Check whether directory is on current MATLAB path (, GitHub. Retrieved .

Comments and Ratings (4)

@JanSimon: thanks for the heads up, I really should check this stuff more carefully.


You define the license as: "GPL + anything implied by placing it on the FEX". But the BSD license required for the FEX and GPL are not compatible. This legal stuff is bewildering.

@Thierry: that is true, but have a look at 'edit ismember'... It's basically a much more complicated version of my little loop. I went for the simpler solution.

For windows this could be shortened/vectorized to the 2 lines:



See release notes for this release on GitHub:

[linked to Github]

MATLAB Release Compatibility
Created with R2010b
Compatible with any release
Platform Compatibility
Windows macOS Linux