MATLAB: I am attempting to use the MATLAB Function block in the simulink model; however evrytime i run it, the following errors occur; “Please change your current directory to a writable directory preferably outside of MATLAB installation area.”

change directorymatlab functionsimulink

function [mean,stdev] = stats(vals)
%#codegen
%calculates the statistical mean 
%and s.d for the values in vals
len = length(vals);
mean = avg(vals,len);
stdev = sqrt(sum(((vals-avg(vals,len)).^2))/len);
coder.extrinsic('plot');
plot(vals,'-+');
function mean = avg(array,size)
mean = sum(array)/size;

Best Answer

You should move your models and codes to a folder which is not the installation folder of MATLAB. Your desktop or 'my documents' should work.

Related Solutions

MATLAB: Directory Watcher

You can use recursive directory listing in the following way:

dirs = folderSizeTree('D:\');;

Then you can store results across days and use setdiff to find which new folder were added.

Oleg

MATLAB: How to make directories within directories within directories

Use absolute paths for the folders. You cannot create a subfolder using the mkdir(parent, sub) notation, if parent is not found. Example:

base = 'D:\Temp';   % Assumed to be existing
cd(base);
mkdir('A');         % C:\Temp\A created
mkdir('A', 'B');    % C:\Temp\A\B created, because 'A' is found in current directory
mkdir('B', 'C');    % This creates C:\Temp\B\C, not C:\Temp\A\B\C
mkdir('A\B', 'C');  % This creates C:\Temp\A\B\C

Much easier:

mkdir(fullfile(base, 'A', 'B', 'C'))

Use full path names to avoid any troubles. The notation mkdir(parent, sub) was needed in Matlab R5.3, but after 20 years I suggest to use the modern power of mkdir to create a complete folder tree at once.

A fixed version of your code:

base  = 'D:\Temp';   % Set as needed
list1 = {'1', '2', '3'}
list2 = {'a', 'b'}
list3 = {'q', 'r'}
for i = 1:length(list1)
  x = list1{i}
  for n = 1:length(list2)
    y = list2{n}
    for p=1:length(list3)
      z = list3{p}
      mkdir(fullfile(base, x, y, z));
    end
  end
end

Best Answer

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