Creating objects in class with loops

Question

An Rubens 2020-4-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/516861-creating-objects-in-class-with-loops

回答： darova 2020-4-10

Hi everyone, i'm trying to create objects within a class using a loop function. Therefore I'm using a function that i've already constructed for the class:

function obj = add(type,location)
    obj.type = type;
    obj.location = location;
end

In my main script I want to artribute objects to 'add', because there are multiple objects that need to be attributed i wanted to use a loop, that gives each object a random location within a specified field. However, in the last step (Array{ind}=add(2, [r,c])) I get the error "Unable to perform assignment because brace indexing is not supported for variables of this type.".

Array = zeros(1,Numb); % Numb is specified beforehand as a random integer
A = roadBuffer;        % 2D matrix, the object can only be placed in the matrix if the value is 0
for ind = 1:Numb
    B = find(A>1);
    X = randi(numel(B));
    [r,c] = ind2sub(size(A),B(X));
    A(r, c) = 1; % change value -> no other object can be placed here
    Array{ind} = add(2, [r,c]);
end