Graeme,
gdalinfo -stats dtm.tif shows Min=1093360681.000 Max=3351465984.000 for
the pixel values. That would mean you are asking for 225810530 levels; lots
of tightly placed contours. I don't think Shapefile format can accommodate a
vector datasource of that size. Based on the histogram, it's
Apologies for the delay in replying.
I ran the same command with 10m spacing gdal_contour -a ELEL -i 1.0
dtm.tif dtm-10m.shp and the same issue occurred. I also ran the DTM
through gdal_translate to add projection info just in case. Note this is
gdal_1.8.1 running on Ubuntu Lucid not from deb's
Correction, the cmdline was gdal_contour -a ELEL -i 10.0 dtm.tif
dtm-10m.shp
On Mon, Oct 24, 2011 at 1:58 PM, Graeme Merrall gra...@inetix.com.auwrote:
Apologies for the delay in replying.
I ran the same command with 10m spacing gdal_contour -a ELEL -i 1.0
dtm.tif dtm-10m.shp and the same
Graeme,
Can you provide a small sample image for testing?
On Mon, Oct 24, 2011 at 9:20 AM, Graeme Merrall gra...@inetix.com.auwrote:
Correction, the cmdline was gdal_contour -a ELEL -i 10.0 dtm.tif
dtm-10m.shp
On Mon, Oct 24, 2011 at 1:58 PM, Graeme Merrall gra...@inetix.com.auwrote:
You can download it from http://dl.dropbox.com/u/5657619/dtm.tif Only 9.6Mb
Cheers,
Graeme
On Mon, Oct 24, 2011 at 3:02 PM, Chaitanya kumar CH
chaitanya...@gmail.comwrote:
Graeme,
Can you provide a small sample image for testing?
On Mon, Oct 24, 2011 at 9:20 AM, Graeme Merrall
I'm trying out gdal_contour just to see what falls out of it as an
experiment. I've noticed it seems to get to 0.. e.g. 7% or so, and
then seems to hang. I'm trying it on a relatively small DTM
The cmdline is pretty simple gdal_contour -a ELEL -i 1.0
dtm_11072101.tif dtm-1m.shp
and gdalinfo
Graeme,
Can you try again with a much larger interval?
On Thu, Oct 13, 2011 at 6:32 AM, Graeme Merrall gra...@inetix.com.auwrote:
I'm trying out gdal_contour just to see what falls out of it as an
experiment. I've noticed it seems to get to 0.. e.g. 7% or so, and
then seems to hang. I'm
