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From: Erkan Güzel on 14 Feb 2010 10:11
"Bruno Luong" <b.luong(a)fogale.findmycountry> wrote in message <gugvot$emb$1(a)fred.mathworks.com>...
> "Daniel " <simpson.d(a)hotmail.co.uk> wrote in message <gugv65$7ll$1(a)fred.mathworks.com>...
> > In MATLAB, is there a simple way to convert the name of a variable to a string? I'm looking for something similar in principle to num2str and str2num.
> >
> > So, if I had something like this:
> >
> > variable1 = 1;
> > variable2 = 2;
> > X = input('Enter in either variable1 or variable2');
> > % so now X is assigned to 1 or 2, depending on user's choice
> > disp(<the word 'variable1' or 'variable2' as a string, depending on which one the user chooses>);
> >
>
> vname=@(x) inputname(1);
> toto=pi
> s=vname(toto)
>
> Bruno

is there any way inverse of this?
i mean, i have a string and i wanna use it as a variable name.
From: Jan Simon on 14 Feb 2010 10:35
Dear Erkan!

> > vname=@(x) inputname(1);
> > toto=pi
> > s=vname(toto)
> >
> > Bruno
>
> is there any way inverse of this?
> i mean, i have a string and i wanna use it as a variable name.

EVAL does evaluate expressions:
NameOfVariable = rand(1);
x = eval('NameOfVariable')

But be aware that code using the evil EVAL is hard to debug. In addition the result of the variable name '!format C:' may be unexpected.
A better idea is using structs with the dynamic field names feature:
S.VarName = 3;
String = 'VarName';
disp(S.(String));
String2 = 'asd'
S.(String2) = 5
disp(S)
Here '!format C:' is not dangerous...

Good luck, Jan
From: Steven Lord on 15 Feb 2010 23:56

"Erkan Güzel" <erkan.ehm(a)gmail.com> wrote in message
news:hl93q9$gm0$1(a)fred.mathworks.com...
> "Bruno Luong" <b.luong(a)fogale.findmycountry> wrote in message
> <gugvot$emb$1(a)fred.mathworks.com>...
>> "Daniel " <simpson.d(a)hotmail.co.uk> wrote in message
>> <gugv65$7ll$1(a)fred.mathworks.com>...
>> > In MATLAB, is there a simple way to convert the name of a variable to a
>> > string? I'm looking for something similar in principle to num2str and
>> > str2num.
>> >
>> > So, if I had something like this:
>> >
>> > variable1 = 1;
>> > variable2 = 2;
>> > X = input('Enter in either variable1 or variable2');
>> > % so now X is assigned to 1 or 2, depending on user's choice
>> > disp(<the word 'variable1' or 'variable2' as a string, depending on
>> > which one the user chooses>);

Call INPUT with the string 's' as the second input.

*snip*

> is there any way inverse of this?
> i mean, i have a string and i wanna use it as a variable name.

Yes, it is possible. However, you should not do this. See Q4.6 in the
newsgroup FAQ.

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ


From: us on 16 Feb 2010 01:23
"Daniel " <simpson.d(a)hotmail.co.uk> wrote in message <gugv65$7ll$1(a)fred.mathworks.com>...
> In MATLAB, is there a simple way to convert the name of a variable to a string? I'm looking for something similar in principle to num2str and str2num.
>
> So, if I had something like this:
>
> variable1 = 1;
> variable2 = 2;
> X = input('Enter in either variable1 or variable2');
> % so now X is assigned to 1 or 2, depending on user's choice
> disp(<the word 'variable1' or 'variable2' as a string, depending on which one the user chooses>);
>
> I want to use this basic concept in a program I am writing, admittely for no real purpose other than displaying a string that contains the actual name of a variable chosen by the user.
>
> Not sure if I explained this very well, however I appreciate your help.
>
> Daniel

a hint:
- do NOT do this...

http://matlabwiki.mathworks.com/MATLAB_FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

us
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