[GRASS5] [bug #4070] (grass) r.in.srtm fails to assign null() to nodata properly - propably a GDAL bug

[Markus Neteler]

On Thu, Feb 09, 2006 at 11:25:43AM +0100, Maciek Sieczka via RT wrote:
> Maciek wrote:
> 
> >> CREATING SUPPORT FILES FOR N51E016_v1
> >> SETTING GREY COLOR TABLE FOR N51E016_v1 (16bit, image range)
> >> r.in.gdal complete.
> >> WARNING: Your color rules do not cover the whole range of data!
> 
> Frank wrote:
> 
> > I didn't get the message when I tried r.in.srtm.  I did make
> > some changes to signed/unsigned handling in the EHDR
> > driver which I think is being used in this case.  At least
> > one of the changes I had to change back and I am wondering
> > if you got an interim version.  Could you retry with a GDAL from
> > CVS (nightly)?
> 
> All fine now. Using today's gdal CVS I get correct min/max for the .bil file
> created by r.in.srtm:
> 
> $ gdalinfo -mm ~/tmp/srtm_v1/N51E016.bil
> Driver: EHdr/ESRI .hdr Labelled
> 
> <snip>
> 
> computed Min/Max=55.000,483.000
>   NoData Value=-32768
> 
> 
> 
> So r.in.srtm works fine again.
> 
> The GDAL version which was making r.in.srtm fail like described in the report,
> was CVS 2006-01-09.
> 
> Thanks Frank.
> 
> Closing it.
> 
> Maciek

Glad to hear that it works again.

A remark:
This is a nice example where we would benefit from moving the
GRASS code management to a centralized foundation infrastructure
as bug reports could be easily shifted across projects as
well as cross dependencies defined.

Frank is luckily a ver responsive person so that it worked
well in this case - but in future the inter-dependencies will
steadily increase (which is generally good as it improves the 
cohesion among the projects and less code replication).

Markus