[GRASS-user] How to import R-generated .gri/.grd raster files in grass ?

[Rainer M Krug]

Antonello Lobianco <antonello at lobianco.org> writes:

> I received some data in .grd + .gri format, where the first one is a small
> text file and the second one (having the same name) is a medium/large
> binary file.

I don't think you can. This is, as far as I remember, an internal format
of the raster package in R to save raster data.
You effectively have two options:

1) use R and the raster package to load the data and to save it in a
different format

2) ask the person to do it for you

Hope this helps,

Rainer

>
> I am unable to open them in grass/qgis (I may have not tried all the
> options.. but almost all!).
>
> Any hint ? Which grid format is it ? Am I missing some library ? I tried to
> use google but unfortunately "r" word is too small, and it ends to refer
> always to the r.* commands in grass...
>
> This is the content of the .grd file:
>
> [general]
> creator=R package 'raster'
> created= 2013-12-14 15:44:30
> [georeference]
> nrows= 134
> ncols= 143
> xmin= 56000
> ymin= 1613000
> xmax= 1200000
> ymax= 2685000
> projection= NA
> [data]
> datatype= FLT8S
> byteorder= little
> nbands= 5
> bandorder= BIL
> minvalue= 0:0:0:0:0
> maxvalue= 0.945:1:1:1:1
> nodatavalue= -1.7e+308
> [legend]
> legendtype=
> values=
> color=
> [description]
> layername= Value:Twin:Psum:pH:CN
> history=
>
> Thank you,
>
>        Antonello

-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
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email:      Rainer at krugs.de

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