Iterate through alphabetical names

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Marc
Marc 2014-5-22
编辑： Marc 2014-7-16
Hello there,
maybe it's a dumb question, but how do I iterate through alphabetical names? Assuming I have matrices A to D, then how can I use those names in a loop?
My approach would be to create a string
names='ABCD'
and loop through those in a loop
for i=0:4
names(i)
end for
But how can I use this for example for the following operation?
boxplot(A(:))
If I simply use
names='ABCD';
for i=0:4
boxplot(name(i)(:))
end for
Then it doesn't work, of course. strcat does not do the job either.
I hope someone has an idea :)
Cheers

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采纳的回答

Star Strider
Star Strider 2014-5-22
Not dumb at all.
You need to use the eval function in your loop:
A = rand(2,10);
B = rand(3,10);
C = rand(4,10);
D = rand(5,10);
names = 'ABCD';
for k1 = 1:length(names)
figure(k1)
boxplot(eval(names(k1)))
end

更多回答（2 个）

Marc
Marc 2014-5-22
That's great, thank you!
Marc
Marc 2014-5-22
Okay one more question ... how can I access a variable using a predefined name vector?
for i=1:length(models)
fprintf('\t Open %s\n', models{i})
eval(models(i))=xlsread(strcat(path,'\',eval(models(i)),'_PER.xlsx'));
end
Eval does not do the job here ?
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Marc
Marc 2014-5-22
Okay - in the meantime I switched to use structs instead of regular variables ... I thought too much in common programming languages ;)

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