Loop over variables with just a number in the name different

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Gert Guldentops
Gert Guldentops 2014-2-4
回答： Walter Roberson 2014-2-4
Hello, I have a number of vectors: WD.Tair1 WD.Tair2 WD.Tair3 WD.Tair4
I would like to loop over them and each time return me the seventh number in each of them. How can I do this? Be aware that the vetors are not of the same lentgh.
Period = 1;
for Period = 1:4 %loop over all different time periods
T0 = WD.Tair???(7);
end
I hope you get it. Thanks

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回答（1 个）

Walter Roberson
Walter Roberson 2014-2-4
http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F
In your case, use dynamic field names.
for Period = 1 : 4
fn = sprintf('Tair%d', Period);
T0 = WD.(fn);
....
end

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