Hi Markus
Thanks for the feedback but I am running in WinGRASS. Just two questions:
- Is it possible to have Long File Support in wiNGRASS 6.4?
- Since I'm running this in a Script, how can I define " export
GRASS_VECTOR_LOW_MEM=1 " in a Python Script?
Thanks
Antonio
Markus Metz wrote:
2011/3/29 António Rocha <[email protected]>:
Hello Markus
Unfortunely, I get this error when I run other datasets. In this case, a
landCover with all CELLS and spatial resolution of 30. The problem is that
North carolina sample is too small.
r.to.vect -v input=FULL@PERMANENT output=FULL feature=area
I get this:
Default driver / database set to:
driver: dbf
database: $GISDBASE/$LOCATION_NAME/$MAPSET/dbf/
Extracting areas...
Building topology for vector map <PT_National_2000_FULL>...
R4243000ERROR: G_realloc: unable to allocate 16976004 bytes at
struct_alloc.c:133
It has created a vector but I cannot display and I cannot use v.info (it
says that I need to build topology).
And If I try to build topology I get and error and before this warning:
Coor files of vector map <PT_National_2000_FULL@PERMANENT> is larger than it
should be (241464079 bytes excess)
So my questions are:
1- Is any fix for this?
2- If not, is there any defined limit for a raster in order to be converted
to vector?
Since this is an out-of-memory error, you could try grass 7 and in your terminal
export GRASS_VECTOR_LOW_MEM=1
before running r.to.vect. This will reduce memory requirements while
building topology. Large File Support is probably not needed here, but
nowadays a good thing to have, just in case.
Markus M
Markus Neteler wrote:
2011/3/23 António Rocha <[email protected]>:
A couple of months ago I sent a few messages regarding a memorry error
with
r.to.vect (it was allocating to many information and data). My question
is,
sicne r.to.vect was not updated, is there any raster or vector lib update
that had any impact on this?
Did you post a test case? Best done with the North Carolina sample
data set. Otherwise it is hard to replicate...
Markus
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