| Re: Surface Problem [message #39673 is a reply to message #39670] |
Tue, 08 June 2004 02:30  |
Timm Weitkamp
Messages: 66
Registered: August 2002
|
Member |
|
|
On 07.06.04 at 07:22 -0700, Jeff Waksman wrote:
> Hi, I have a huge amount of data that I'm working with and need to
> plot and was hoping that someone could help me with.
>
> The data has three coordinates - radius, polar angle, and time.��I
> want to create a circular image and then to create an MPEG out of the
> different frames (imagine a moving satellite picture of the Earth...).
> I did this by using "POLAR_SURFACE" and interpolating between the
> data points.��However, the problem is that I can't get a smooth outer
> circle.��IDL is taking the points with the largest radius and
> connecting the dots to create the outline of my surface.��Thus, I end
> up with jagged edges and a misshapen diagram.��Does anyone know what I
> can do to make the interpolation spread throughout a larger circle
> that would encompass the entire previous shape?��Any help would be
> greatly appreciated.
If your data is regularly gridded in polar coordinates, then you might
interpolate it onto a grid with finer angular spacing (with REBIN or
CONGRID or INTERPOLATE or BILINEAR) before the POLAR_SURFACE operation.
Good luck,
Timm
--
Timm Weitkamp <http://people.web.psi.ch/weitkamp>
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
