[pdal] PDAL Python bindings

[Stefan Ziegler]

If you want retile a mosaic from 1 sqkm tiles to e.g. 750 m * 750 m tiles,
I would use python for calculating the new bounding boxes and invoke pdal.
Just the same as with GDAL. I can also make system calls but I prefer
gdal/ogr python bindings.

Stefan

On Wed, Aug 12, 2015 at 8:36 PM, Andrew Bell <andrew.bell.ia at gmail.com>
wrote:

> On Wed, Aug 12, 2015 at 12:04 PM, Stefan Ziegler <
> stefan.ziegler.de at gmail.com> wrote:
>
>> Use case 1: We have approx. 1000 tiles (one sqkm each) and need to
>> reproject them. Afterwards we nee to adjust the bounding boxes to "nice"
>> coordinates again. Let's say the source bbox is something like
>> 620'000/240'000, 621'000/241'000. After reprojecting it will be
>> 2'620'000.55/1'240'000.34, 2'621'000.58/1'241'000.37. But we want a bbox
>> like this: 2'620'000/1'240'000, 2'621'000/1'241'000. I can achieve this
>> with available pdal features (tindex, translate etc.) and some python
>> script for the loop with system calls (for pdal).
>>
>
> Are you just saying that you want to write python instead of some shell to
> invoke pdal?  Not sure how a python API would help with that.  This is
> probably best done with a pipeline (XML) that you could invoke with `pdal
> pipeline`, but maybe I'm not understanding.
>
>
>> Use case 2: Some small (wsgi) webservice like requesting lidar data with
>> a bounding/polygon as parameter value. Again I could do this wie
>> os.system().
>>
>
> There are lots of tools out there to do this in various ways.  Hobu Inc.
> makes greyhound (not sure on its release status), which can serve a single
> file of data based on a query, but we'll have something much fancier and
> more efficient shortly.  I still don't understand what kind of an API would
> be beneficial for this.  You may have to explain a bit more.
>
> --
> Andrew Bell
> andrew.bell.ia at gmail.com
>
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