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Re: map: integerized sinusoidal [message #65250 is a reply to message #65225]

Wed, 18 February 2009 08:47

Roman
Messages: 3
Registered: February 2009

Junior Member

On 18 Feb., 17:31, David Fanning <n...@dfanning.com> wrote:
> Roman writes:
>> Thanks for all your comments ! Below you find the way I did it
>> succesfully in IDL:
>
> Well, I have to admit, it appears to be a miracle to me.
> But if it works, it works. :-)
>
> One question:
>
>> ; transform into UTM coordinates
>> mapStruct = map_proj_init('integerized sinusoidal', $
>> center_longitude=0., false_northing = 0., $
>> false_easting = 0., is_zones=86400.0, $
>> sphere_radius = 6371007.181)
>
> Where did you come up with that number, 86400, for the
> IS_ZONES keyword? I thought there were a total of 648
> "tiles" or "zones" in an integerized sinusoidal projection.
>
> Cheers,
>
> David
> --
> David Fanning, Ph.D.
> Coyote's Guide to IDL Programming (www.dfanning.com)
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")

the details I got from here:
http://modland.nascom.nasa.gov/developers/is_tiles/is_gctp.h tml

I will try to install the MODIS RTool to cross check the reprojection.
But as you say: it works in IDL (IDL 6.4) :) !

Cheers, Roman

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[Message index]

		Re: map: integerized sinusoidal By: jameskuyper on Sat, 21 February 2009 03:53
		Re: map: integerized sinusoidal By: ben.bighair on Fri, 20 February 2009 17:12
		Re: map: integerized sinusoidal By: David Fanning on Fri, 20 February 2009 14:18
		Re: map: integerized sinusoidal By: Roman on Wed, 18 February 2009 08:47
		Re: map: integerized sinusoidal By: David Fanning on Wed, 18 February 2009 08:31
		Re: map: integerized sinusoidal By: Roman on Wed, 18 February 2009 07:40
		Re: map: integerized sinusoidal By: David Fanning on Tue, 17 February 2009 12:59
		Re: map: integerized sinusoidal By: liamgumley on Tue, 17 February 2009 11:09

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