How to change variable name in each loop iteration?

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Aleksandar Milakovic
编辑： Azzi Abdelmalek 2015-7-28
Say that I have a workspace containing vectors (or cells) with names 'test_1', 'test_b', and 'test_3'. I want to run a for loop (for j=1:3) which will in every iteration run over one of the three vectors in my workspace and perform a certain operation on it. For example:
for j=1:3
test_?(:,1) = 10;
end
This should acceses all elements in the first column of vector test_? and assign value of 10 to them. So my question is how to do this for varying end of the vector name (1, b, 3 in this particular case).
Thank you

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2015-7-28
编辑：Azzi Abdelmalek 2015-7-28
This is a bad idea http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F
But if you want to learn how to do it:
str={'1','b','2'}
for k=1:3
assignin('base',sprintf('test_%s', str{k}),10)
end

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