[R-sig-Geo] caught segfault?!

[Roger Bivand]

On Mon, 12 Apr 2010, joel dinis wrote:

> Hello to all,
>
> I'm currently using R-GRASS GIS
> interface and I get an error when I'm trying
> to read a vector through readVECT6:
>
>> area <- readVECT6("area1")
>
> *** caught segfault ***
> address (nil), cause 'memory not mapped'

Which platform are you using?

Can you do v.out.ogr on area1, and try to recreate the error reading 
directly reading with readOGR?

Do you have the GRASS GDAL plugin installed (I believe that you do as the 
traceback (thanks for including it!) has layer="1"), and if so does 
running:

area <- readVECT6("area1", plugin=FALSE)

make a difference? If it makes a difference, there is a problem with the 
GRASS GDAL plugin. Please report back on this list, or the lower-volume 
statgrass list.

Hope this helps,

Roger

>
> Traceback:
> 1: .Call("ogrInfo", as.character(dsn), as.character(layer), PACKAGE =
> "rgdal")
> 2: ogrInfo(dsn = dsn, layer = layer, input_field_name_encoding =
> input_field_name_encoding)
> 3: readOGR(dsn, layer = "1", verbose = !ignore.stderr, pointDropZ =
> pointDropZ)
> 4: readVECT6("area1")
>
> Possible actions:
> 1: abort (with core dump, if enabled)
> 2: normal R exit
> 3: exit R without saving workspace
> 4: exit R saving workspace
> Selection: 1
> aborting ...
>
> Can anyone tell me why this happen,
> and how can I solve this?
>
> Thanks
> JD
>
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>
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no