Hi,
I have read the method to read HDF files here:
http://edndoc.esri.com/arcobjects/9.2/NET/6068a0e3-4265-47f3-b1eb-68cb498e78f1.htm
but there is something wrong when access HDF files with multiple
subdatasets.
it seems that it is only applicable to HDF files wiht only ont subdataset.
Best
On Wed, May 6, 2009 at 4:22 PM, mohwawang wrote:
>
> Is there a website that provides free download for raster elevation model
> (DEM) that can be used by the gdal utility gdal_contour? Thanks.
>
>
NASA:
ftp://e0srp01u.ecs.nasa.gov/srtm/
___
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I didn't find in there anything that can be directly used as an input DEM
raster for gdal_contour.
Mo
--- On Wed, 5/6/09, Markus Neteler wrote:
> From: Markus Neteler
> Subject: Re: [gdal-dev] free raster elevation model download
> To: "mohwawang"
> Cc: "gdal-dev"
> Date: Wednesday, May 6,
On Wed, May 6, 2009 at 11:22 PM, mohwawang wrote:
>
> Hi all,
>
> Is there a website that provides free download for raster elevation model
> (DEM) that can be used by the gdal utility gdal_contour? Thanks.
Check here for a collection:
http://grass.osgeo.org/wiki/Geodata
Markus
G. Allegri wrote:
> Hi Mateusz. At now I do the following:
>
> for g in self._selectionGeometries: for i in
> range(self._centroids.GetGeometryCount()): p =
> self._centroids.GetGeometryRef(i) if p.Intersect(p):
-^
p in same p ?
> indexes.append(i)
>
> wh
Hi all,
Is there a website that provides free download for raster elevation model (DEM)
that can be used by the gdal utility gdal_contour? Thanks.
Mo
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Hi Mateusz.
At now I do the following:
for g in self._selectionGeometries:
for i in range(self._centroids.GetGeometryCount()):
p = self._centroids.GetGeometryRef(i)
if p.Intersect(p):
indexes.append(i)
which is not the faster
Le Wednesday 06 May 2009 16:48:06 Andreas Neumann, vous avez écrit :
> Hi,
> Filename: a25.tif
> File Size: 25472x25427x1
> Pixel Size: 42.431795 x -42.431795
> UL:(697837651.400476,244274906.596461)
> LR:(698918474.082743,243195993.344970)
> Copy 0,0,25472,25427 to 205747,211643,50722,50632.
-->
Even,
I understood. Thank you.
Mo
--- On Wed, 5/6/09, Even Rouault wrote:
> From: Even Rouault
> Subject: Re: [gdal-dev] where is the source code of gdaldem
> To: gdal-dev@lists.osgeo.org
> Cc: "mohwawang"
> Date: Wednesday, May 6, 2009, 2:38 PM
> Mo,
>
> If you read carefully the very top
Matthieu,
the following script works like a charm for me:
#!/usr/bin/python
# -*- coding: utf-8 -*-
import ogr
ds = ogr.Open('PG:')
ds.ExecuteSQL("CREATE TABLE foo2 (col VARCHAR)")
ds.ExecuteSQL("INSERT INTO foo2 (col) VALUES ('é')")
ds.ExecuteSQL("DROP TABLE foo2")
You didn't specify which GDAL
I don't understand your problem/suggestion : what do you mean by "has some
strange sizes in both direction" ?
Normally, if you want to convert a shapefile, to let's say UTM N31 WGS84, you
would do :
ogr2ogr -t_srs EPSG:32631 shape_in_utm.shp shape_in_latlon.shp
Le Wednesday 06 May 2009 16:38:41
Mo,
If you read carefully the very top of the page, you'll see that the utility
will only be available in GDAL 1.7.0, so it's normal you don't find it in
gdal-1.6.0
Mateusz also quoted http://trac.osgeo.org/gdal/ticket/2975. Currently, there
is a discussion between the GDAL and GRASS projects
David Anderson wrote:
Does the OGR provider support write access to ESRI personal
geodatabases? I have tried to find the answer on the web but can’t
figure it out.
http://gdal.org/ogr/drv_pgeo.html
"OGR optionally supports reading ESRI Personal GeoDatabase .mdb
files via ODBC."
It means, no
G. Allegri wrote:
I need to check "points in polygon" over various thousands of points
and regional scale polygons. A for loop iteration + intersect() over
the points geometries is absolutely inefficient.
What you you need is OGRGeometry::Within or OGRGeometry::Contains,
not intersect.
Best re
I need to check "points in polygon" over various thousands of points
and regional scale polygons. A for loop iteration + intersect() over
the points geometries is absolutely inefficient. Is there a faster
method? I'm on the way to test the Shpely iterators, but I would like
to remain with OGR...
t
Does the OGR provider support write access to ESRI personal
geodatabases? I have tried to find the answer on the web but can't
figure it out. If not, does anyone know of another way to write to
these with Map 3D?
Thanks,
David
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I imagined it was something with features scope. Thanks Howard, for
now I will use your snippet... as I can't find a different way to
prevent the problem.
2009/5/6 Howard Butler :
>
> On May 6, 2009, at 10:02 AM, G. Allegri wrote:
>>
>> geometries = [features[i].GetGeometryRef() for i in range(len
On May 6, 2009, at 10:02 AM, G. Allegri wrote:
geometries = [features[i].GetGeometryRef() for i in
range(len(features))]
features[i] is a temporary and goes poof once it goes out of scope.
GetGeometryRef depends on features[i] staying alive for *its* entire
lifetime as well. In short, y
I try to explain the problem. I need to setup a python list from a set
of geometries extrcted from a multipolygon layer.
I do the following (this is an excerpt, obviously):
source = ogr.Open(self.selectionshape)
layer = source.GetLayerByIndex(0)
geometries = []
features = [layer.GetFeature(i) for
Hi,
when trying to merge several tif-files (which had been converted
previously from Intergraph cit files), I am running into this error
message:
--
Traceback (most recent call last):
File "/usr/local/bin/gdal_merge.py", line 427, in
fi.copy_into( t_fh, band, band, nodata )
Hi all,
Reading the details of the ESRI Shapefile driver, noticing that there is no
dataset creation option, I had one idea.
When I am converting a shapefile from Lat/Lon to UTM, the produced dataset has
some strange sizes in both direction, i.e. approx 36m and 45m.
Wouldn't it be a nice enhan
Thanks, Lucena.
This seems to the issue. I am using 1.6.0 (not trunk). Meanwhile I was
able to solve the issue with nconvert (xnview) as a workaround.
Thanks,
Andreas
On Wed, May 6, 2009 4:01 pm, Lucena, Ivan wrote:
> Andreas,
>
> If that issue is related to http://trac.osgeo.org/gdal/ticket/195
Andreas,
If that issue is related to http://trac.osgeo.org/gdal/ticket/1959 check the
version you are using.
Ivan
> ---Original Message---
> From: Andreas Neumann
> Subject: [gdal-dev] Converting big Intergraph cit files
> Sent: May 06 '09 01:58
>
> Hi all,
>
> I am trying t
Mateusz,
Thank you so much!
Mo
--- On Wed, 5/6/09, Mateusz Loskot wrote:
> From: Mateusz Loskot
> Subject: Re: [gdal-dev] where is the source code of gdaldem
> To: "mohwawang"
> Cc: gdal-dev@lists.osgeo.org
> Date: Wednesday, May 6, 2009, 9:42 AM
> mohwawang wrote:
> > Hi all,
> >
> > Acco
mohwawang wrote:
Hi all,
According to http://www.gdal.org/gdaldem.html there is a utility
program gdaldem. But where is the source code? I could not find it in
~/apps in gdal-1.6.0. Thank you for help.
References to the history of gdaldem:
http://trac.osgeo.org/gdal/ticket/2640
http://trac.osg
Hi all,
According to http://www.gdal.org/gdaldem.html there is a utility program
gdaldem. But where is the source code? I could not find it in ~/apps in
gdal-1.6.0. Thank you for help.
Mo
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ht
Hi Even,
You were actually right, it comes from my script.
I already defined it the way you suggested, I was reading values from a XML
file defined as UTF-8 and the script was sending values as unicode string to
the ExecuteSQL command.
Even if it is UTF-8, it seems that the ExecuteSQL only hand
For detailed information on DGG's see http://cs.sou.edu/~sahrk/dgg/.
There is a paper in the journal Cartography and Geographic Information Science,
'Geodesic Discrete Global Grid Systems' by Kevin Sahr, Denis White and A. Jon
Kimerling, linked from the above web page, which surveys DDG in deta
Hello everyone,
i ve ran into some odd projection and i would like to know if i can use gdal
to reproject georeferenced data in this projection (gcp included in my
raster) . I'm used to gdal and projections but here i can't seem to find
enough information.
The idea is to reproject to a DGG (discret
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