Compare classes with different Properties

Hi

Is there an easy way compare classes of the same type with variable attributes ?

I have an array which contains instances of a class

example would be something like this

instance 1

classdef MyClass
    properties
       a = 1; 
    end
    methods
    end
end

Instance 2

classdef MyClass
    properties
       a = 2; 
    end
    methods
    end
end

So lets say I have an array of 20 instances of MyClass - 7 of them would have a = 1, 13 of them would have a = 2

The desired output would be something like

Output = [7 1;13 2]

Thanks alot - Help is much appreciated

Answer 1

[per isakson]

Try this

%% Create sample data
mc(20) = MyClass;
[mc(1:7).a]  = deal(1);
[mc(8:20).a] = deal(2);
%% Desired output
edges = (1:2+1);
hc = histcounts( [mc.a], edges );
Output = [ reshape(hc,[],1), reshape(edges(1:2),[],1) ]

which shall output

ans =
     7     1
    13     2

This piece of code contains many "magic" numbers

• the number 20
• the numbers 7 and 13
• the values 1 and 2 of the property a

the value of edges must match the values of the property a

[Lucas Russi]

gracias