[GRASS-user] Accessing Old Grass Files

Glynn Clements glynn at gclements.plus.com
Wed Mar 31 15:33:15 EDT 2010

Gary Nobles wrote:

> I have just been handed a file of old grass 4.1 mapsets and they want them
> to be readable in Grass 6.4 for exporting to ArcGIS.
> I have 6.4 on a linux computer, is there anyway of opening them in 6.4 or do
> i need to install 4.1?

6.4 should be able to handle raster maps from 4.3; I don't know
whether anything changed between 4.1 and 4.3. Vector data may be a
different matter; there were substantial changes to the vector code
between 5.3 and 6.0; if you have problems specifically with vector
data, try 5.4.1.

> I tried to access them with 6.4 and i get the error Warning:<PERNAMENT> is
> not a valid mapset.

Is that a transcription error? It should be PERMANENT, not PERNAMENT.

The "is not a valid mapset" error normally indicates that the
directory lacks a WIND file. Copying the DEFAULT_WIND file (if it
exists) to WIND should suffice.

Glynn Clements <glynn at gclements.plus.com>

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