Displaying CIR images and overlay shape files
A familiar problem. This works (for S3 methods at least): > library(sp) > methods(image) [1] image.default image.SpatialGridDataFrame* [3] image.SpatialPixelsDataFrame* Non-visible functions are asterisked > ?image.SpatialGridDataFrame -- Edzer
Monica Pisica wrote:
Bingo, it did work .... my fault was to look at the help inside R for "image" and i didn't see the arguments red, green, blue, but looking at the pdf manual for sp i found the complete definition of "image". Thanks so much, Monica
Date: Wed, 21 May 2008 21:45:27 +0200 From: edzer.pebesma at uni-muenster.de To: pisicandru at hotmail.com CC: r-sig-geo at stat.math.ethz.ch Subject: Re: [R-sig-Geo] Displaying CIR images and overlay shape files Monica Pisica wrote:
I suppose that somehow I can use spplot, but I have to recognize
that I don't know how to use it to display the CIR image ?..
This would be a way that I haven't explored. When looking in sp, a
place
to start would be the image method; it has arguments red green and blue where you pass these bands; then it composites colour. A similar trick should be do-able for spplot, but it's not in there, as of now; right now you can only pass a factor and the colours to use. -- Edzer
Any help is very much appreciated, thanks, Monica
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