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Re: Define a variable [message #80497 is a reply to message #80352]

Wed, 13 June 2012 01:40

hadi
Messages: 33
Registered: June 2012

Member

On Jun 13, 5:12 pm, David Platten <dplat...@gmail.com> wrote:
> On Wednesday, June 13, 2012 8:07:58 AM UTC+1, hadi wrote:
>> Hi
>> I have a question about variable. How to determine if variable is
>> 'undefined'? Thank you
>> Best, Hadi
>
> Try,
>
> PRINT, N_ELEMENTS(x)
>
> or, try
>
> numElements = N_ELEMENTS(x)
> PRINT, numElements
>
> This method of checking whether a variable is defined is in the IDL help.
>
> Regards,
>
> David
>
>

Dear David
Thank you it is working. I want to make command to read DEM.bin file.
How i can do that?
Thank you
Best, Hadi

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[Message index]

		Define a variable By: hadi on Wed, 13 June 2012 00:07
		Re: Define a variable By: dplatten on Wed, 13 June 2012 06:03
		Re: Define a variable By: hadi on Wed, 13 June 2012 01:40
		Re: Define a variable By: dplatten on Wed, 13 June 2012 01:12

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