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Re: block fill image [message #62346 is a reply to message #62344]

Fri, 05 September 2008 06:50

ben.bighair
Messages: 221
Registered: April 2007

Senior Member

On Sep 5, 7:58 am, maffie <matthias.demuz...@geo.kuleuven.be> wrote:
> Dear all,
>
> I would like to make an image, presenting cluster classes on the x-
> axes, and different variables on the Y-axes. Each combination (Xi,Yi)
> should be represented by a block, whereby its color fill should
> represent a standard deviation, and with the mean written in the box
> as text.
>

Hi,

I think you could simply create the image and populate each pixel with
the standard deviation. Then the trick is to use an image display
routine that will use nearest neighbor interpolation - try David
Fanning's TVSCALE or Liam Gumley's IMDISP for example. You'll want to
carefully control the color scheme for which each of these gives you
plenty of options. The subsequent annotations can be done using
XYOUTS like this..

dy = (y[1]-y[0])/2.
for i = 0L, nx-1 do begin
for j = 0L, ny-1 do begin
XYOUTS, x[i], y[j] + dy, stddev[i,j], ALIGN = 0.5, ....
endfor ; j loop
endfor ; i loop

You may want to add an offset in the Y direction for the image - that
is what the dy is about.

Cheers,
Ben

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[Message index]

		Re: block fill image By: Juggernaut on Fri, 05 September 2008 07:29
		Re: block fill image By: ben.bighair on Fri, 05 September 2008 06:50
		Re: block fill image By: matthias.demuzere on Sat, 06 September 2008 03:39
		Re: block fill image By: kfish on Tue, 30 September 2008 08:04
		Re: block fill image By: David Fanning on Tue, 30 September 2008 09:08

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