how do I make first name of my struct variable?

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Nick
Nick 2013-8-6
Hello all, I'm trying to make the first name of my struct variable but I can't figure out how to do it.
This works
test.a = 1;
List = 'a';
test.(List)
ans = 1
I'm trying to do the following:
test.a = 1;
List = 'test'
(List).a
%now I want to get the output test.a but I get:
(List).a
|
Error: Unexpected MATLAB operator.
Is it possible what im trying to do and if so how?
regards, Nick
  2 个评论
Friedrich
Friedrich 2013-8-6
Why do you need this? This doesn't seem like a good way of programming. Maybe if you explain why you need this, we can help you with a better more suitable way of achieving your goal?
Nick
Nick 2013-8-6
编辑：Nick 2013-8-6
I have several counters that have different numbers I need to test. I can put them in a string easy using somthing like this:
CounterNumber = 2;
List = sprintf('%s%d','Counter',CounterNumber)
%output List: Counter2
this i want to use to test what value's my counters have in an for loop:
for ii = 1:Amount
if List.value(ii) == 1
count = count+1;
if count == Amount
CountingDone = true;
else
CountingDone =false;
end
else
CountingDone = false;
end
end
If I have to make an forloop for every counter I have I would go over 60 loops.

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采纳的回答

David Sanchez
David Sanchez 2013-8-6
List = 'test' ;
eval(strcat(List,' .a = 1'));
test =
a: 1
  4 个评论
显示 2更早的评论
Nick
Nick 2013-8-7
Thanks for the advice on programming Jan Simon. I changed my structs from several to one struct like this:
before:
counter1.data
counter2.data
...
counterX.data
after:
for jj = 1:X
for ii = 1:n
counter(jj).data(ii)
end
end
With this I don't need the EVAL command anymore.
Regards,
Jan
Jan 2013-8-7
This is a nice and efficient solution! Thanks for posting it, Nick.

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