| Re: 3D Scatterplot code [message #46] |
Sun, 20 January 1991 16:34 |
churchill
Messages: 5
Registered: January 1991
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Junior Member |
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BSD@psuvm.psu.edu (Scott Dickson) writes:
> Yesterday I posted looking for an X based code to do 3D scatter plots,
> but I want to extend my search somewhat. I am thinking that someone
> must have done this with PV-Wave or with apE, both of which I have.
>
> So, if you have or know of a code or method to do 3D scatter plots under
> X or apE or PV-Wave that can do interactive rotation, translation,
> etc. of the plot, *please* let me know.
Please let me know too. I was about to start to write PV-Wave code to
do interactive rotation of 3D scatter plots. If it has been done
already then I won't re-invent wheels.
--
Jack N. Churchill | jack@syd.deg.csiro.au
CSIRO Division of Exploration Geoscience | churchill@decus.com.au
Remote Sensing Group | Phone: +61 2 887 8884
PO Box 136 North Ryde NSW 2113 | Fax: +61 2 887 8909
Australia | Telex: AA25817
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| Re: 3D Scatterplot code [message #47 is a reply to message #46] |
Sat, 19 January 1991 12:59  |
plonski
Messages: 7
Registered: February 1991
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Junior Member |
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3D Scatter plots in IDL are easy. I typically use a "surface /nodata ..."
call to set up the t3d matrix based on user specified rotations, scales
etc. Then one can use the "plots /t3d PSYM= ..." command with the x,y,z
values. A simple version of the above would only take two lines of code.
I typically assign different colors to each data set being plotted.
I don't have a way to interactively rotate. For the data set I use,
I wrote a short routine which does the above and then I
call it repeatedly until I get the perspective that looks best.
The code assumes a lot about the data which is passed in structures
so it would not be useful to others.
If anyone has a better way I'd like to know about it as the above method
was my quick & dirty approach to the problem.
------------------------------------------------------------ -------------------
. . .__. The opinions expressed herein are soley
|\./| !__! Michael Plonski those of the author and do not represent
| | | "plonski@aero.org" those of The Aerospace Corporation.
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