How to load mat file located in a package folder (.../+fold​er/matfile​.mat)

Folder structure:

/+pkg

/+pkg/cls.m (that's a classdef)

/+pkg/matfile.mat

From within the constructor of cls.m, I want to do: content = load('matfile.mat');

I've tried load('matfile'), load('pkg.matfile'), load('pkg.matfile.mat')... nothing works.

Is there a way to do this cleanly?

Answer 1

[per isakson]

Given

...\+pkg\cls.m
...\+pkg\matfile.mat

Try this

>> obj = pkg.cls
obj = 
  cls with properties:
    mat: [1x1 struct]

where

classdef  cls < handle
    properties
        mat
    end
    methods
        function this = cls()
            folder = fileparts( which('pkg.cls') );
            this.mat = load( fullfile( folder, 'matfile.mat' ) );
        end
    end
end

[Walter Roberson]

Wouldn't it be cleaner to use mfilename to get the file name of the class definition file?

[per isakson]

Yes, it would!

I had forgotten that mfilename takes arguments. By itself, mfilename doesn't return the package name, only the name, cls.

Thus, replace

folder = fileparts( which('pkg.cls') );

by

folder = fileparts( mfilename('fullpath') );