[GRASS-user] Filtering high "outliers" in Landsat reflectance imagery?

Eric Goddard egoddard1010 at gmail.com
Sun Aug 4 18:49:00 PDT 2013

Thanks, looking forward to trying it out in the new version.

On Sun, Aug 4, 2013 at 8:45 PM, Glynn Clements <glynn at gclements.plus.com> wrote:
> Eric Goddard wrote:
>> OK, I discovered what was different between my work and home machines.
>> The mapcalc if statement doesn't evaluate properly if using
>> r.external.out. If r.external isn't used, it evaluates correctly. Bug?
> Yes. A bug was introduced in r38127 which (by sheer coincidence) only
> affects floating-point GDAL output (and primarily affects
> double-precision GDAL output). For FCELL, zeros will be mapped to
> null; for DCELL, any value where the bottom 32 bits are zero (which
> includes all small integers) will be mapped to null.
> This should be fixed by r57414.
> --
> Glynn Clements <glynn at gclements.plus.com>

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