| interpolation around a contour [message #19334] |
Wed, 08 March 2000 00:00 |
Inpakala Simon
Messages: 1
Registered: March 2000
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Junior Member |
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Dear Group:
This is what I have:
I have an xy array of coordinates for a contour (closed contour if you
connect the points) that has the following properties:
- arbitrary number of coordinates, they are generally bigger than 200.
- coordinates are irregularly spaced.
This is what I need:
I need to interpolate points around the old contour so that
- the number of points = a power of 2 = 256
- interpolated points are equidistantly spaced from one another.
The original and interpolated contour should have the same perimeter and
shape.
I have tried IDL's technical support and their suggestions did not
work. I have tried several permutations of TRIGRID, TRIANGULATE,
Spline_P, and CONGRID. They do not give me the right answer. Perhaps I
am choosing the wrong keywords?
Any help would be most appreciated.
Regards,
Inpakala Simon
------------------------------------------------------------ ----------
- Inpakala Simon - Senior Analyst / Programmer
- The James Buchanan Brady Urological Institute
- 600 N. Wolfe St.
- Baltimore MD 21287
- Voice: 410 614 3815
- Pager: 410 283 5401
- Fax: 410 614 8096
- eMail isimon@bme.jhu.edu
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