[Gdal-dev] projection lost when translating HDF to GTiff

[Thom DeCarlo]

Hi Brent,
Yes, it does show a coord sys, but it is defined by GCPs. I found an email
in the archive that says I need to use gdalwarp to convert it into a
geo-transform matrix-based system. I've tried doing that, but for some
reason the output is not ending up in UTM. Instead, Imagine says it is
Transverse Mercator. I've tried setting the target coord sys manually
(-t_srs "+proj=utm +zone=-19 +datum=wgs84"), but I cannot figure out how to
tell it that it is in the southern hemisphere. And I really don't think I
should have to give it the target coord sys. The data is starting in UTM so
it should stay in UTM.

--
Thom DeCarlo
-------------------------------------------------------
     Is it a bad sign if you spend the day wondering
why there are no laws against what you do for a living?
                                - Dilbert

> -----Original Message-----
> From: Brent Fraser
> Sent: Tuesday, July 12, 2005 3:42 PM
> To: Thom DeCarlo; gdal-dev at xserve.flids.com
> Subject: Re: [Gdal-dev] projection lost when translating HDF to GTiff
> 
> Thom,
> 
>   Do you get a coord sys defined when you do a "gdalinfo" on the hdf file?
> 
> Brent
> 
> 
> ----- Original Message -----
> From: "Thom DeCarlo" <t.r.decarlo at larc.nasa.gov>
> To: <gdal-dev at xserve.flids.com>
> Sent: Tuesday, July 12, 2005 11:52 AM
> Subject: [Gdal-dev] projection lost when translating HDF to GTiff
> 
> 
> Hi,
> I gave up on compiling the HDF4 code myself and found that the binary
> bundle
> will work with a couple of tweaks.
> 
> Anyway, I've got a bunch of ASTER DEM files that I need to convert to
> geotiff and I'm losing the geographic projection info when I do the simple
> "gdal_translate -of GTiff input.hdf output.tif"
> 
> I looked at the online docs and didn't see anything special needed to do
> this translate. Can someone tell me what I'm missing?
> 
> Thanks,
> Thom
> --
> Thom DeCarlo
> -------------------------------------------------------
>           It is ok to celebrate diversity...
> As long as you don't point out that people are different.
>                                 - Colin Quinn
> 
> 
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