| integration of tabulated data in spherical coordinates [message #25418] |
Fri, 08 June 2001 02:31 |
bonnefoy
Messages: 1
Registered: June 2001
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Junior Member |
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Hi,
My experiment (a goniometer) is aimed at measuring the light reflected
by a surface for several geometric configurations; to describe the
whole upper hemisphere, in spherical coordinates (radius, latitude,
longitude), the observation angle is in the range 0-90 degrees in
latitude, and 0-360 degrees in longitude. To determine the albedo of the
surface, I need to integrate these reflectance measurements over the
hemisphere.
First, I used Sph_Scat to perform a spherical gridding of my data with a
better angular resolution (5 degrees in latitude and longitude, instead
of the 10 degrees of the measurements).
But my problem is that I did not find any IDL routine that integrates
the volume formed by a surface defined by tabulated data (my
measurements) in spherical coordinates (radius, latitude, longitude).
Has anyone solved this problem before, or have any ideas on to do it?
Thanks
Nicolas
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