comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » Re: Indices ?

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Indices ? [message #41909 is a reply to message #41900]

Thu, 02 December 2004 08:31

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

sdj@tiscali.it writes:

> OK, so let me explain what I need to do and why I think that the
> aforementioned information is necessary. Please excuse me if this
> message is a tad long...
>
> I have two satellite sensors giving me SST values on two different
> grids:
> sensor1 is 4320 lon points by 2160 lat points
> sensor2 is 4096 lon points by 2048 lat points
>
> I need to interpolate the sensor1 data onto the sensor2 grid. To do
> this I have found via this newsgroup a useful routine written way back
> in 1994 by Dan Bergmann: interp_sphere.pro
>
> The interp_sphere.pro routine is called in the following way:
> IDL> grid = INTERP_SPHERE(lat,lon,data)
> where
> lat: The latitudes on the grid where interpolated
> values are desired (in degrees)
> lon: The longitudes on the grid where interpolated
> values are desired (in degrees)
> data: An array (3,ndata) where ndata is the number of
> data points, and can be any number larger than N.
> each row of data should contain a longitude, a
> latitude, and a value to be interpolated.
>
> Therefore in my case:
> lat => (lat_sensor2[valid_lat_s2])
> lon => (lon_sensor2[valid_lon_s2])
> data =>
> (lat_sensor1[valid_lat_s1],lon_sensor1[valid_lon_s1],data_se nsor1[valid])

I don't think so. I think maybe you are confusing
the grid with the data that goes *on* the grid.
It seems to me that lat and lon are just
lat_sensor2 and lon_sensor2.

> I hope I have managed not to confuse you too much.

Well, I'm always confused, but I'm not ready to think
I'm wrong, yet. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

Report message to a moderator

[Message index]

		Re: Indices ? By: Chris Lee on Thu, 02 December 2004 12:44
		Re: Indices ? By: sdj on Thu, 02 December 2004 10:01
		Re: Indices ? By: tam on Thu, 02 December 2004 10:54
		Re: Indices ? By: David Fanning on Thu, 02 December 2004 08:31
		Re: Indices ? By: sdj on Thu, 02 December 2004 08:03
		Re: Indices ? By: David Fanning on Wed, 01 December 2004 09:22
		Re: Indices ? By: George N. White III on Wed, 01 December 2004 09:06
		Re: Indices ? By: David Fanning on Wed, 01 December 2004 04:58

Previous Topic:	Re: IDL and Intel's 64-bit Xeon processor
Next Topic:	Re: Problems when printing ps plots from C

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Oct 10 05:31:20 PDT 2025

Total time taken to generate the page: 0.95825 seconds