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Re: vector layer comparison in IDL [message #42824 is a reply to message #42809]

Wed, 23 February 2005 02:23

yp
Messages: 42
Registered: February 2005

Member

Mark Hadfield wrote:
> yp wrote:
>> Is there a sensible way to compare two exported vector layers and
>> compute the residuals using IDL? I am sorry for asking this simple
>> question...
>
> Not at all. I, for one, have no idea what your simple question means.
Is
> this some sort of GIS thing?
>

Yes Mark, it is related to GIS. Then, you might advise to use some GIS
package. However, I have have 100s of *files* - these files are
basically ARC vector layers exported as ASCII files (lon, lat, ...,
attributes). For instance, I have 50 sites where the surveys have been
done in two different times (hence 100 ASCII tables); estimate the
absolute changes (residuals or differences). I believe that there
should be some way of doing it in IDL...

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[Message index]

		Re: vector layer comparison in IDL By: Mark Hadfield on Fri, 25 February 2005 15:16
		Re: vector layer comparison in IDL By: yp on Fri, 25 February 2005 06:35
		Re: vector layer comparison in IDL By: Mark Hadfield on Wed, 23 February 2005 12:06
		Re: vector layer comparison in IDL By: yp on Wed, 23 February 2005 02:23
		Re: vector layer comparison in IDL By: David Fanning on Thu, 03 March 2005 14:58
		Re: vector layer comparison in IDL By: Mark Hadfield on Thu, 03 March 2005 14:42
		Re: vector layer comparison in IDL By: David Fanning on Thu, 03 March 2005 13:26
		Re: vector layer comparison in IDL By: Mark Hadfield on Thu, 03 March 2005 13:08
		Re: vector layer comparison in IDL By: yp on Thu, 03 March 2005 03:00
		Re: vector layer comparison in IDL By: Mark Hadfield on Tue, 01 March 2005 12:55
		Re: vector layer comparison in IDL By: yp on Tue, 01 March 2005 02:25
		Re: vector layer comparison in IDL By: Mark Hadfield on Mon, 28 February 2005 11:48
		Re: vector layer comparison in IDL By: yp on Mon, 28 February 2005 11:27
		Re: vector layer comparison in IDL By: Mark Hadfield on Sun, 27 February 2005 13:18

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