read and use the ith matrix for the ith determiner

Question

Homayoon 2016-3-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/274841-read-and-use-the-ith-matrix-for-the-ith-determiner

编辑： Stephen23 2016-3-22

Hello All,

I want to use parfor loop to speed up my calculations. However I am stuck at a point. for each determiner, a certain predefined matrix has to be used. Please be advised that the matrices are not dimensional equal so that I cannot combine them all together.

Assume I have matrices R1, R2 and R3 with totally different dimensions. I want to do the following:

parfor i=1:3
read matrix Ri % I do not know how to do this part
my calculations
end

What should i do? Thank you so much

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Stephen23 2016-3-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/274841-read-and-use-the-ith-matrix-for-the-ith-determiner#answer_214557

编辑：Stephen23 2016-3-22

在 MATLAB Online 中打开

Easy: put the matrices into one cell array. This is a fast and reliable way to program:

C = {R1,R2,R3}; % <- one cell array
parfor k = 1:numel(C)
    C{k}
end

And DO NOT try to access those arrays using dynamic variable names. That would be a slow and buggy way to program, that beginners seem to love no matter how slow and buggy it is:

http://www.mathworks.com/matlabcentral/answers/196952-how-to-create-new-variables-in-batches-with-strcat