| Re: Band+Lat+Lon = georeferenced file? [message #65309 is a reply to message #65308] |
Mon, 23 February 2009 13:49  |
liamgumley
Messages: 74
Registered: June 2005
|
Member |
|
|
On Feb 23, 3:28 pm, wilfrid <wilfrid_schroe...@hotmail.com> wrote:
> Time and again I come back to the same situation where I have a bunch
> of satellite images with lat&lon values for each pixel and I need to
> create ENVI standard files (i.e., data file+header) or some other easy
> to handle file (e.g. geotiff) that I can manipulate with GIS
> softwares. My input data correspond to at-satellite data (swath data)
> - and it can come from geostationary or polar orbiters. Using
> ENVI_REGISTER_DOIT I get relatively large errors when I know the
> pixels are pretty well navigated (I'm using MODIS data). I assume the
> problem might be linked to my use of ENVI_PROJ_CREATE which I have set
> to (/geographic). Using Imagemap (written by Liam Gumley some years
> ago) I managed to display the data just fine (map outlines properly
> located) but I could not create a file with projection information out
> of that. This has consumed my weekend and now I feel like asking
> around as I am pretty sure this is one of those basic operations many
> of you might have attempted before.
If you are working with MODIS Level 1B data, then MRTSwath is a good
solution:
http://igskmncnwb001.cr.usgs.gov/landdaac/tools/mrtswath/
MRTSwath will resample MODIS Level 1B data to a variety of standard
map projections, and store the result in a GeoTIFF file.
If you are working with other polar orbiter (e.g., AVHRR) or
geostationary image data, then I don't know of a freely available
solution.
Cheers,
Liam.
Practical IDL Programming
http://www.gumley.com/
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
