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Re: A problem with envi_save_rois [message #66336 is a reply to message #66335]

Fri, 01 May 2009 05:31

Jean H.
Messages: 472
Registered: July 2006

Senior Member

frasca wrote:
> Hi,
>
> Please could some one tell me why the following program does not
> work?

try adding "envi" at the top of your procedure... it will give you
access to the Envi's functions
Jean

>
> pro veamos, event
> ;
> ; Choose the bhtmref.img file
> ;
> ENVI_SELECT, fid=fid
> ;
> ; Get the dimensions for this
> ; file and create an ROI
> ;
> ENVI_FILE_QUERY, fid, dims=dims
> roi_id = ENVI_CREATE_ROI(ns=ns, nl=nl, $
> color=4, name='Square')
> ;
> ; Define the square and add
> ; the polygon object to the ROI
> ;
> xpts = [100, 200, 200, 100, 100]
> ypts = [100, 100, 200, 200, 100]
> ENVI_DEFINE_ROI, roi_id, /polygon, $
> xpts=xpts, ypts=ypts
>
> ENVI_SAVE_ROIS, 'Square.roi', roi_id
>
> end
>
> When executed is says:
>
> Variable is undefined ENVI_ROIS(ENVI_ROI_COMMON) The result may be
> invalid
>
> It looks like I follow the rules in the reference guide, actually
> except for the envi_save_roi is a copy and paste of the
> envi_create_roi (page 191)
>
> Thanks in advance,
> Jose

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[Message index]

		Re: A problem with envi_save_rois By: josea.malpica on Fri, 01 May 2009 11:52
		Re: A problem with envi_save_rois By: Jean H. on Fri, 01 May 2009 07:31
		Re: A problem with envi_save_rois By: josea.malpica on Fri, 01 May 2009 06:47
		Re: A problem with envi_save_rois By: Jean H. on Fri, 01 May 2009 05:31

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