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| Re: type conversion error - help needed urgent [message #84446 is a reply to message #84444] |
Mon, 27 May 2013 14:17  |
Craig Markwardt
Messages: 1869
Registered: November 1996
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Senior Member |
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On Monday, May 27, 2013 5:28:48 AM UTC-4, fawltyl...@gmail.com wrote:
> On Monday, May 27, 2013 10:42:41 AM UTC+2, Mats Löfdahl wrote:
>> IDL> void=execute('whatever='+varstr)
>>
>> I'll probably correct this again in a couple of minutes...
>
> (SCOPE_VARFETCH('whatever', /ENTER))=SCOPE_VARFETCH(varstr)
This is like giving gasoline and a match to a boyscout learning to build a fire.
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| Re: type conversion error - help needed urgent [message #84461 is a reply to message #84460] |
Mon, 27 May 2013 01:42 |
Mats Löfdahl
Messages: 263
Registered: January 2012
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Senior Member |
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Den måndagen den 27:e maj 2013 kl. 10:36:37 UTC+2 skrev sid:
> On Monday, May 27, 2013 1:35:02 PM UTC+5:30, Mats Löfdahl wrote:
>
>> Den måndagen den 27:e maj 2013 kl. 10:02:32 UTC+2 skrev Mats Löfdahl:
>
>>> Or in your case,
>
>>> IDL> void='whatever=varstr'
>
>> No, that was someone else's case. In YOUR case, it would be
>
>> IDL> void='whatever='+varstr
>
> Thank you very much sir. I was struggling for so much time. It works fantastically.
>
> Thanking you a lot
It's great that you got what I meant, in spite of my failure to make the final line come out right. For reference, what I meant to write was:
IDL> void=execute('whatever='+varstr)
I'll probably correct this again in a couple of minutes...
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| Re: type conversion error - help needed urgent [message #84462 is a reply to message #84461] |
Mon, 27 May 2013 01:36 |
gunvicsin11
Messages: 93
Registered: November 2012
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Member |
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On Monday, May 27, 2013 1:35:02 PM UTC+5:30, Mats Löfdahl wrote:
> Den måndagen den 27:e maj 2013 kl. 10:02:32 UTC+2 skrev Mats Löfdahl:
>
>>
>
>> Or in your case,
>
>>
>
>> IDL> void='whatever=varstr'
>
>
>
> No, that was someone else's case. In YOUR case, it would be
>
>
>
> IDL> void='whatever='+varstr
Thank you very much sir. I was struggling for so much time. It works fantastically.
Thanking you a lot
sid
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| Re: type conversion error - help needed urgent [message #84464 is a reply to message #84463] |
Mon, 27 May 2013 01:02 |
Mats Löfdahl
Messages: 263
Registered: January 2012
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Senior Member |
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Måndagen den 27:e maj 2013 kl. 06:50:45 UTC+2 skrev sid:
>
> But still the problem is not solved since varstr is equal to jplm10(34) which is a string , so I am not getting value of jplm10(34)
Your program might be faster and easier to read if you had a 2D array, so instead if jplmN(M), you could use jplm(N,M). But if you want to continue with the idea of constructing the variable name as a string, I think you want the execute command:
IDL> a=findgen(10)
IDL> void=execute('c=a(8)')
IDL> print,c
8.00000
Or in your case,
IDL> void='whatever=varstr'
http://www.exelisvis.com/docs/EXECUTE.html
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| Re: type conversion error - help needed urgent [message #84465 is a reply to message #84464] |
Sun, 26 May 2013 21:50 |
gunvicsin11
Messages: 93
Registered: November 2012
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Member |
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On Monday, May 27, 2013 12:01:50 AM UTC+5:30, David Fanning wrote:
> sid writes:
>
>
>
>> jplm10(34)
>
>
>
> IDL> varstr = 'jplm' + StrTrim(v,2) + '(' + StrTrim(dpi[0],2) + ')'
>
>
>
>> I need to use this value for further calculations but this is taken as a string and the variable couldnt be used.
>
>
>
> Humm. Kind of a strange way to write a program, but maybe you know what
>
> you are doing. :-)
>
>
>
> Cheers,
>
>
>
> David
>
> --
>
> David Fanning, Ph.D.
>
> Fanning Software Consulting, Inc.
>
> Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
>
> Sepore ma de ni thue. ("Perhaps thou speakest truth.")
Hello sir,
But still the problem is not solved since varstr is equal to jplm10(34) which is a string , so I am not getting value of jplm10(34)
Actually,
IDL> help,jplm10(34)
<Expression> FLOAT = 6502.00
But this varstr
IDL> help,varstr
VARSTR STRING = 'jplm10(34)'
But from this I am getting jplm10(34) but it is a string so If take it as a variable then this type conversion error comes.
Please help me in this regard
thanking you
sid
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| Re: type conversion error - help needed urgent [message #84470 is a reply to message #84465] |
Sun, 26 May 2013 11:31 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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sid writes:
> jplm10(34)
IDL> varstr = 'jplm' + StrTrim(v,2) + '(' + StrTrim(dpi[0],2) + ')'
> I need to use this value for further calculations but this is taken as a string and the variable couldnt be used.
Humm. Kind of a strange way to write a program, but maybe you know what
you are doing. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")
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