getting sum of class properties from a matrix

Question

tombola 2011-11-30

Hi, if I make a simple class;

MATLAB code
classdef ExampleClass < handle
  properties 
     fileCount = 0;
  end
end

And I make a collection of them;

MATLAB code
myCollection=[ExampleClass1; ExampleClass2; ExampleClass3; ExampleClass4];

Is there an easy way to get the sum of the fileCount without iterating please? is, totalFileCount = sum(myCollection.fileCount)?

Also, is there an easy way to get the sum where the fileCount has a certain value? ie, totalFailCount = sum(myCollection.fileCount == 0)?

Any help appreciated! Everything I do with sum I get invalid arguments.

Answer 1

Daniel Shub 2011-11-30

You should be able to do:

sum([myCollection.fileCount])

and

sum([myCollection.fileCount] == 0)

Note the [].

tombola 2011-11-30

THANKS!!!