Parfor when filling object vector

Argyrios

2018 7 19

0 个回答

7 次查看（30 天）

0 个投票

I have an issue when using parfor loop to add values to an array of objects. Specifically:

The class definition:

    classdef Point 
    properties 
        node
        cp
        n
        curv
        dx = 0;
        V = 0;
        T
        d = 0;
        adaptlevel = 0;
        child = 0;
        active = 0;
    end
    methods
        function obj = Point(x,cp)
            if nargin < 1
            elseif nargin == 1
                obj.node = x;
            else
                obj.node = x;
                obj.cp = cp;
            end
        end
    end
end

So, when using a parfor loop in order to fill this array of objects, like

pts(10,1) = Point;
parfor j = 1:length(pts)
  pts(j).node = 1;
  pts(j).cp = 1;
  pts(j).n = 1;
  pts(j).dx = 1;
  pts(j).active = 1;
  pts(j).d = 0;
end

I get

>> pts(1)
ans = 
Point with properties:
          node: [1×2 struct]
            cp: []
             n: []
          curv: []
            dx: 0
             V: 0
             T: []
             d: 0
    adaptlevel: 0
         child: 0
        active: 0

However, it works well when I use a for loop. Why? Any ideas? My goal is to find an approach to store and update values in the pts array of Objects without the need of too many conversions cell2mat, etc.