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Re: divise image envi-idl [message #70967 is a reply to message #70966]

Tue, 18 May 2010 12:03

jeanh
Messages: 79
Registered: November 2009

Member

On 18/05/2010 1:50 PM, tonino wrote:
> Thank you very much Jean,
>
> I'm sure those advices will be useful for the next step. For now, the
> problem concerns the line :
>
> result = image[i:i+((NSimage/5)-1),j:j+((NLimage/2)-1),0:NBimage-1]
>
> the error message is :
>
> Subscript range values of the form low:high must be>= 0,< size, with
> low<= high: IMAGE.
> % Execution halted at: TUILAGE 18 C:\Documents and Settings
> \Administrateur\Mes documents\tuilage.pro

try to print these values... It it probably happening for your last i
and/or j in the loop. Are you sure than NS is a multiple of 5 and NL of
2? if not, you can prepare your index before doing the subscript:
subNS = (i+((NSimage/5)-1)) < (NSimage-1)
subNL = (j+((NLimage/2)-1)) < (NLimage-1)
result = image[i:subNS,j:subNL,0:NBimage-1]

be sure, when you save the result with envi_write_envi_file, to compute
the proper ns and nl!

Jean

>
> and it still comes if I change the data type or if I transform the
> variable 'result' into a float array...
>
> I think I don't write the terms of the loop properly
>
> ... if you have an idea.
>
> thanks again for your answer
> nestonino

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[Message index]

		Re: divise image envi-idl By: tonino on Thu, 20 May 2010 14:03
		Re: divise image envi-idl By: tonino on Thu, 20 May 2010 13:22
		Re: divise image envi-idl By: jeanh on Wed, 19 May 2010 10:33
		Re: divise image envi-idl By: Antoine Cheula on Wed, 19 May 2010 07:17
		Re: divise image envi-idl By: jeffnettles4870 on Tue, 18 May 2010 12:22
		Re: divise image envi-idl By: jeanh on Tue, 18 May 2010 12:03
		Re: divise image envi-idl By: tonino on Tue, 18 May 2010 10:50
		Re: divise image envi-idl By: jeanh on Tue, 18 May 2010 09:15

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