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| Re: lego tiled image (how to make?) [message #22588 is a reply to message #22586] |
Wed, 22 November 2000 00:00  |
Craig Markwardt
Messages: 1869
Registered: November 1996
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Senior Member |
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Ben Tupper <btupper@bigelow.org> writes:
> Hello,
>
> What you describe sounds very much like what I do with Liam Gumley's IMDISP
> procedure. You may control all of the behaviors you now control with the
> SHADE_SURF commands. Soemthing like the following:
>
> IMDISP, merged, Out_Pos = Pos
> (if you need to check for NANs then switch in BYTSCL(merged,/NAN) for merged
> above)
>
> PLOT, lonbins,latbins, Position = Pos, /NoErase
Or, PLOTIMAGE, which does these in one step. It's supposed to be
exactly like a plot command. For astronomy images you can even
display the image "backwards!"
I gotta keep flogging PLOTIMAGE since Liam muscled into my territory
with IMDISP. Liam, don't worry, I have a worthy competitor for
bintools coming soon.
Craig
--
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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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| Re: lego tiled image (how to make?) [message #22590 is a reply to message #22586] |
Wed, 22 November 2000 00:00 |
Ben Tupper
Messages: 186
Registered: August 1999
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Senior Member |
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Hello,
What you describe sounds very much like what I do with Liam Gumley's IMDISP
procedure. You may control all of the behaviors you now control with the
SHADE_SURF commands. Soemthing like the following:
IMDISP, merged, Out_Pos = Pos
(if you need to check for NANs then switch in BYTSCL(merged,/NAN) for merged
above)
PLOT, lonbins,latbins, Position = Pos, /NoErase
You might need to fiddle with the plot command keywords to get the axes to fit
you data range.
Look for Liam's procedure at http://cimss.ssec.wisc.edu/~gumley
Ben
"R.G.S." wrote:
> Greetings all,
> I have an satellite data image and I would like to plot it
> as a color image composed of small uniform shaded rectangles.
> i.e. sort of like IDL> tv,rebin(image,/sample)
>
> This data does need the axis that a surface (or plot) command will give.
> So the rebin will not work in general, (or I supoose I could calculate
> the size of the output image, then create the axis appropriate for that)
> Also, I will want to plot this as a polar plot in the future, and the rebin
> function will nto work for that.
>
> What I (currently) do to plot this data is (surface; rotated to bird's eye
> view):
>
> shade_surf, merged,lonbins,latbins,shade = bytscl(merged,/nan),$
> ax=90,az=0,ztickname = strarr(10)+' ',zticklen = 0.0001,/noerase
>
> What I really want is to create a surface like
> surface,image,/lego
> and do the above shadesurf command.
>
> What is the best way to create such a figure?
> Should I write the code to draw and shade each polygon for each sample
> (ugh slow!), or is there already a way to do such a thing?
>
> Cheers,
> bob
> stockwell at co-ra.com
--
Ben Tupper
Bigelow Laboratory for Ocean Sciences
180 McKown Point Rd.
W. Boothbay Harbor, ME 04575
btupper@bigelow.org
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