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Re: landscan data [message #46954 is a reply to message #46949]

Sun, 15 January 2006 08:06

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

matthias.demuzere@geo.kuleuven.be writes:

> Is there anyone that has experience in reading the Landscan data in
> IDL? The LandScanTM Dataset comprises a worldwide population database
> compiled on a 30" X 30" latitude/longitude grid. The LandScan Dataset
> files are available in an ESRI raster binary format.
>
> Now I have all the data, but I really don=B4t succeed in reading in this
> dataset. The data includes also a header file with the following
> information:
>
> ncols 43200
> nrows 20880
> xllcorner -180
> yllcorner -90
> cellsize 0.00833333333333
> NODATA_value -9999
> byteorder LSBFIRST

I presume you tried something like this. What happened?

OpenR, lun, 'yourfile.dat', /Get_Lun, /Swap_If_Big_Endian
image = IntArr(43200L, 2088L)
ReadU, lun, image
Free_Lun, lun

Cheers,

David

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

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[Message index]

		Re: landscan data By: David Fanning on Mon, 16 January 2006 08:01
		Re: landscan data By: matthias.demuzere on Mon, 16 January 2006 05:40
		Re: landscan data By: David Fanning on Sun, 15 January 2006 08:06
		Re: landscan data By: matthias.demuzere on Tue, 17 January 2006 03:01

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