Cool, I didn't think to look at the shapefile help for DBF info. Makes sense.
I was able to index the DBF and the join processed in seconds, which was
running for hours before without finishing. Sweet.
On Apr 25, 2012, at 7:53 PM, Frank Warmerdam wrote:
> William,
>
> Yes, but only in a very
William,
Yes, but only in a very restricted fashion. The shapefile driver docs says:
"""Currently the OGR Shapefile driver only supports attribute indexes
for looking up specific values in a unique key column. To create an
attribute index for a column issue an SQL command of the form "CREATE
IND
CREATE INDEX
Some OGR SQL drivers support creating of attribute indexes. Currently this
includes the Shapefile driver. An index accelerates very simple attribute
queries of the form fieldname = value, which is what is used by the JOIN
capability. To create an attribute index on the nation_id field
Is it possible to index fields in a DBF, and does GDAL support that for a JOIN?
-
William Kyngesburye
http://www.kyngchaos.com/
"Those people who most want to rule people are, ipso-facto, those least suited
to do it."
- A rule of the universe, from the HitchHiker's Guide to the Galaxy
__
I had installed GDAL from a synaptic package, not source. I removed the
synaptic version and installed 1.9 from source and everything works now.
Thanks,
David
-Original Message-
From: Even Rouault [mailto:even.roua...@mines-paris.org]
Sent: Wednesday, April 25, 2012 1:39 PM
To: gdal
Le mercredi 25 avril 2012 20:32:28, David Hodo a écrit :
> I'm trying to install GDAL for Python 3 on Ubuntu 11.10 and having some
> problems. I installed GDAL 1.7.0 and the header files from with Synaptic.
> I initially tried installing the Python bindings with 'sudo easy_install
> GDAL'. This
I'm trying to install GDAL for Python 3 on Ubuntu 11.10 and having some
problems. I installed GDAL 1.7.0 and the header files from with Synaptic.
I initially tried installing the Python bindings with 'sudo easy_install
GDAL'. This worked for me, but the installed version does not work with
Pytho
On 04/25/2012 04:31 PM, Even Rouault wrote:
Hi Ari,
Hum, I'm surprised that it has survived your testing ;-) : GetSpatialFilter()
might return NULL (in fact, in the general case, it will), so
GetSpatialFilter()->clone() should segfault.
I've not yet tested this one at all :) -- I only made sur
Hi Ari,
> I've uploaded a new patch, which hopefully corrects the issues Even
> brought up. Below are comments.
I've reviewed quickly and the new version seems to address my comments well.
>
> I've not added the Append or Buffer methods, which basically work on
> just one layer. I believe such f
Selon Alexandre Gacon :
> Hi,
>
> We use currently GDAL/OGR C++ API to execute complicated requests on a
> postgis database. Apparently, GDAL executes the request also to find the
> spatial reference of the result. Is it possible to bypass this behavior and
> thus to avoid the execution of our req
Hi,
We use currently GDAL/OGR C++ API to execute complicated requests on a
postgis database. Apparently, GDAL executes the request also to find the
spatial reference of the result. Is it possible to bypass this behavior and
thus to avoid the execution of our request ?
--
Alexandre Gacon
Folks,
I'll start a new thread for this RFC.
I've uploaded a new patch, which hopefully corrects the issues Even
brought up. Below are comments.
I've not added the Append or Buffer methods, which basically work on
just one layer. I believe such functionality is simple enough to create
using
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