| Contouring of data in polar coordinates [message #3482] |
Mon, 30 January 1995 13:24  |
jennifer
Messages: 8
Registered: October 1991
|
Junior Member |
|
|
Can someone point me to a method for creating a polar plot with contours?
I imagine there are two steps to this problem:
1) interpolate irregularly spaced data expressed in polar coordinates to
obtain a grid of data
2) contour these data on a polar plot.
Any help would be appreciated.
Jennifer Dungan | MS 242-4
Research Scientist | NASA Ames Research Center
JCWS, Inc. Tel. (415) 604-3618 | Moffett Field, CA 94035-1000
email: jdungan@gaia.arc.nasa.gov | USA
|
|
|
|
| Re: Contouring of data in polar coordinates [message #3542 is a reply to message #3482] |
Thu, 02 February 1995 06:49  |
bowman
Messages: 121
Registered: September 1991
|
Senior Member |
|
|
In article <3gjled$epd@news.arc.nasa.gov>, jennifer@gaia.arc.nasa.gov
(Jennifer Dungan) wrote:
> Can someone point me to a method for creating a polar plot with contours?
> I imagine there are two steps to this problem:
> 1) interpolate irregularly spaced data expressed in polar coordinates to
> obtain a grid of data
> 2) contour these data on a polar plot.
If your data are in polar coordinates (i.e. r and theta), which is
equivalent to co-latitude and longitude on an azimuthal projection, just
use MAPSET and the AZIMUTHAL projection.
Ken Bowman
--
Dr. Kenneth P. Bowman 409-862-4060
Associate Professor 409-862-4132 fax
Climate System Research Program bowman@csrp.tamu.edu
Department of Meteorology PP-Glider
Texas A&M University
College Station, TX 77843-3150
|
|
|
|
| Re: Contouring of data in polar coordinates [message #3543 is a reply to message #3482] |
Thu, 02 February 1995 06:44 |
wmc
Messages: 117
Registered: February 1995
|
Senior Member |
|
|
In article epd@news.arc.nasa.gov, jennifer@gaia.arc.nasa.gov (Jennifer Dungan) writes:
> Can someone point me to a method for creating a polar plot with contours?
> I imagine there are two steps to this problem:
> 1) interpolate irregularly spaced data expressed in polar coordinates to
> obtain a grid of data
> 2) contour these data on a polar plot.
If you have IDL rather than PV-WAVE you can use MAP_SET to produce polar
stereographic plots. This is MUCH faster than interpolating.
- WIlliam.
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
