CODEWITHSUNDEEP
classmatlabrelative-path
Tobias Kienzler
Tobias Kienzler

Reputation: 27393

How to access files in a class' path in MATLAB?

I'd like to implement a class which returns the data located in a precalculated data file, e.g.

classdef myConstants
  properties ( Constant )
    const1 = load('consts.mat', 'const1');
  end
end

However, I want the file consts.mat to lie in the @myConstants folder which is on the MATLAB path, so I cannot (and should not) hard-code the location.

So how can I instruct load to use the file @myConstants\consts.mat independently of @myConstants actual location?

edit I realized if the folder @myConstants lies on the MATLAB path, load consts.mat works globally. So, the code I wrote already works perfectly fine, but consts.mat is not only globally accessible, one also has to pay attention to name collisions if other classes provide their own consts.mat - which is why I don't post this as an answer, I'd still prefer a solution that does not bear this potential bug source.

Upvotes: 1

Views: 180

Answers (2)

Tobias Kienzler
Tobias Kienzler

Reputation: 27393

const1 = load([fileparts(mfilename('fullpath')) filesep 'consts.mat'], 'const1');

does the trick, but it does not hide consts.mat

Upvotes: 1

Edric
Edric

Reputation: 25140

Place consts.mat in the directory @myConstants\private. You may also wish to do this:

const1 = getfield( load( 'consts.mat', 'const1' ), 'const1' );

because LOAD returns a structure with fields named for the values loaded.

Upvotes: 2

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