[GRASS-user] Error exporting to tiff

[Anna Petrášová]

On Wed, Jul 1, 2015 at 8:11 PM, Andrea Peri <aperi2007 at gmail.com> wrote:

> Hi,
>
> I'm try-ing to export a tiff raster using this couple of commands:
>
> r.composite -c --overwrite red=refl4.hpf at PERMANENT
> green=refl3.hpf at PERMANENT blue=refl2.hpf at PERMANENT levels=256
> output=hpf
>
> r.out.gdal -c input=hpf at PERMANENT output=/path-to/hpf.tif
> format="GTiff" type="Byte"
> createopt="INTERLEAVE=PIXEL,TFW=YES,PROFILE=BASELINE,COMPRESS=DEFLATE"
>
> But I have an error:
>
> Checking GDAL data type and nodata value...
>
> 2..5..8..11..14..17..20..23..26..29..32..35..38..41..44..47..50..53..56..59..62..65..68..71..74..77..80..83..86..89..92..95..98..100
> WARNING: Selected GDAL datatype does not cover data range.
> WARNING: GDAL datatype: Byte, range: 0 - 255
> WARNING: Raster map <hpf at PERMANENT> range: 0 - 1.67114e+07
> WARNING: Raster export results in data loss.
> Using GDAL data type <Byte>
> Input raster map contains cells with NULL-value (no-data). The value
> 255 will be used to represent no-data values in the input map. You can
> specify a nodata value with the nodata option.
> ERROR: Raster export aborted.
>
> The message is absolutely not clear about what is the problem.
>
> I don't know if there some log where retrieve more information.
>

What is your region setting?

>
> Many thx for any help.
>
> Thx,
>
> --
> -----------------
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
> -----------------
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