[GRASS-user] rastization failed : can't allocate memory

[Markus Neteler]

On Sat, Sep 6, 2014 at 12:32 PM, Daniel Victoria
<daniel.victoria at gmail.com> wrote:
> Maybe, instead of throwing a memory error, grass could check the region size
> and if the number of cells is too high, ask for user confirmation or suggest
> how the user can change the region.

I have for now added a message:

# test case:
GRASS 7.1.svn (nc_spm_08_grass7):~ > g.region vect=zipcodes_wake res=5 -pa
projection: 99 (Lambert Conformal Conic)
zone:       0
datum:      nad83
ellipsoid:  a=6378137 es=0.006694380022900787
north:      258110
south:      196320
west:       610040
east:       677070
nsres:      5
ewres:      5
rows:       12358
cols:       13406
cells:      165671348

# new message about RAM added:
GRASS 7.1.svn (nc_spm_08_grass7):~ > v.to.rast zipcodes_wake
out=zipcodes_wake_area use=attr attrcol=SHAPE_Area --o
Using at least 0.4 GB of RAM (adjust with 'rows' parameter)
Pass 1 of 4:
Reading areas...
[...]



# other test case:
GRASS 7.1.svn (nc_spm_08_grass7):~ > g.region vect=zipcodes_wake res=1 -pa
projection: 99 (Lambert Conformal Conic)
...
rows:       61780
cols:       67020
cells:      4140495600

GRASS 7.1.svn (nc_spm_08_grass7):~ > v.to.rast zipcodes_wake
out=zipcodes_wake_area use=attr attrcol=SHAPE_Area --o rows=10000
Using at least 4.6 GB of RAM (adjust with 'rows' parameter)
...

Is that new message understandable?

Markus