Thanks Simon! I'll give it a shot. Meteosat is definitely a pain, and it's one of the satellites I'm working with.
If you don't mind me asking, what do you typically have in your -a_ullr designation for gdal_translate? Or are you pulling out sections and it varies? I'd like to get the full image, if possible. Thanks again! Jerl On Mon, Oct 28, 2013 at 10:33 AM, Simon Richard Proud <[email protected]> wrote: > Hi Jerl, > We work with Meteosat data in full disk projection and it's a bit of a > headache! Try these commands in GDAL and see if they work for you: > > gdal_translate -a_srs "+proj=geos +a=6378169 +b=6356583.8 +lon_0=9.49 > +h=35785831" -a_ullr $up_left_x $up_left_y $low_rig_x $low_rig_y $INFILE > $TEMPFILE > gdalwarp -s_srs '+proj=geos +lon_0=9.49 +h=35785831 +x_0=0.0' -t_srs > '+proj=latlong +datum=WGS84' -tr 0.01 0.01 -te 0 20 70 70 -order 3 $TEMPFILE > $OUTFILE > > Just remember to change the +lon_0 to whatever you need for GOES. Also > change the -tr and -te for gdal :-) You can also add +lat_0 but to be > honest I never found it made a difference (perhaps it is ignored?) > > Cheers, > Simon > > ------------------------------ > *Fra:* [email protected] [[email protected]] > på vegne af Jerl Simpson [[email protected]] > *Sendt:* 28. oktober 2013 16:17 > *Til:* [email protected] > *Emne:* [gdal-dev] Satellite projections > > Hi guys: > > I have a few data sets that come from the GOES satellites (Full Disk) > and a couple others. I can use one of the SSEC's programs to convert from > their format to a netCDF. No useful SRS info comes along in the conversion. > > I've applied an SRS to them using gdal_translate and PROJ.4 that looks > like: > > "+proj=ortho +lon_0=-79.8 +lat_0=.208" (lon/lat is the position of one of > the satellites) > > (I've also tried): > +proj=ortho +datum=WGS84 +ellps=WGS84 +lon_0=-79.8 +lat_0=.208 > > I'm wanting to get them into EPSG:4326. When I do this, I end up with > corner coordinates of a very small area just below the satellites position. > > > Does anyone have an suggestions that might help me warp this into > position? I'm sure there's something obvious that I'm missing. > I found this page, and the copied/pasted bit about the projection, but my > attempts have not been successful. > > http://www.gdal.org/frmt_msg.html > *Georeference and Projection* > * > * > *The images are using the Geostationary Satellite View projection. Most > GIS packages don't recognize this projection (we only know of ILWIS that > does have this projection), but gdalwarp.exe can be used to re-project the > images.* > * > * > Thanks! > > -- Jerl Simpson Sr. Systems Engineer Weather Trends International [email protected] Corporate – http://www.wxtrends.com**** B2B – http://www.wt360business.com**** B2C – http://www.wt360.com**** ** This communication is privileged and may contain confidential information. It's intended only for the use of the person or entity named above. If you are not the intended recipient, do not distribute or copy this communication. If you have received this communication in error, please notify the sender immediately and return the original to the email address above. © Copyright 2013 Weather Trends International, Inc.
_______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
