[gdal-dev] ArcGIS 10

[Francis Markham]

Thanks for your encyclopedic response Jason!  If you don't mind
detailing the problems with running GDAL scripts in process, and your
work-around for avoiding it, I would be very interested.

Cheers,

Francis

On 12 August 2010 02:49, Jason Roberts <jason.roberts at duke.edu> wrote:
> ArcGIS 10 installs Python 2.6 and numpy 1.3.0. It does not install GDAL with
> Python bindings. It includes a new Python module from ESRI called ArcPy.
> This module supposedly provides the capability of reading and writing raster
> layers in the form of numpy arrays, similar to GDAL’s Python bindings. I
> have not played with it much—only very briefly in Arc 9.4 Beta 2, when it
> did not seem to work very well. If you search the Arc 10 online
> documentation you can probably find more information.
>
>
>
> In principle, the ArcPy module may make it less necessary those developing
> for ArcGIS with Python to resort to GDAL to read or write rasters. If you do
> wish to use GDAL from ArcGIS 9.3 or 10, you must contend with an important
> bug in ArcGIS that affects GDAL; see http://trac.osgeo.org/gdal/ticket/3672.
> I am corresponding with the ESRI developer who is investigating this. He
> expressed an interest in fixing this in Arc 10 SP1 but has not committed to
> doing so at this time.
>
>
>
> To work around that, when creating Python-based geoprocessing tools that use
> GDAL, you must disable the “Run Python script in process” option in the
> ArcGIS UI. That has certain implications on performance but is probably fine
> for most people. I developed a hack that works around the ArcGIS bug that
> allows you to enable the “Run Python script in process” but unless you are
> pretty savvy with Python (comfortable writing C extension modules) I do not
> recommend that approach. If anyone is interested I can provide an example.
>
>
>
> Best,
>
> Jason
>
>
>
> From: gdal-dev-bounces at lists.osgeo.org
> [mailto:gdal-dev-bounces at lists.osgeo.org] On Behalf Of Discourse Maps
> Sent: Wednesday, August 11, 2010 10:38 AM
> To: gdal-dev at lists.osgeo.org
> Subject: [gdal-dev] ArcGIS 10
>
>
>
> I hear the new ArcGIS10 has GDAL and NumPy built into the geoprocessor.  If
> this is true, does that mean that users will not have to install the various
> Python library bindings GDAL, numpy, etc. after a full Arc10 install?
>
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