MATLAB: Error using cd, Cannot CD

file directorysignal processing calculating grb average valueSignal Processing Toolbox

When I tried to run the following code in my matlab, it said" Error using cd, Cannot CD to( Name is nonexistent or not a directory), could you tell me why this happens, thank you very much!

if(~isdeployed)
  cd(fileparts(which(mfilename)));
end

Best Answer

This code works for me when mfilename is a file that exists in my path, but otherwise it gives that error. So, my guess is that you have an error in what is stored in mfilename.

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MATLAB: Removing a folder from a directory outsaide the current directory of Matlab

You just need to specify the full path of the folder you want to delete to rmdir. If you supply just the folder name, it assumes that folder is in the current directory. You can use fullfile to build the full path of the folder:

parentfolder = 'C:\somewhere\on\the\drive';
foldername = 'deleteme'
rmdir(fullfile(parentfolder, foldername), 's');

MATLAB: Cd funtion

From Loren Shure's Blog on Writing Deployable Code by guest-blogger Peter Webb:

Don't rely on the current directory (cd) or changes to the MATLAB path (addpath) to control the execution of M-files. The path of a deployed application is determined at compiled time, and remains forever fixed. The current directory is never on the path in a deployed application. In the code below, cd-ing to the stringFcns directory does not make stringFcns/add shadow mathFcns/add. The order of these functions at runtime depends on what their order was at compile time. This causes errors.

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MATLAB: Cd funtion

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