[pdal] Support for BAG file format

[Dan Ames]

Seems like that would be a way to gain support for a lot of formats -
though GDAL isn't native cloud - but your suggestion of how to make the
GDAL layers into "2.5-D" clouds could be very useful (i.e. for working with
DEM's as point clouds...)

On Fri, Sep 4, 2015 at 8:51 AM Howard Butler <howard at hobu.co> wrote:

> I think what we should implement is a "GDAL" reader. The GDAL reader would
> take in any GDAL-readable raster, convert each band to a dimension, and
> assign an individual XY (and maybe Z) for each point based on the pixels in
> the raster. For typical single band imagery, this would result in just an
> XYZ point cloud (regularly spaced, of course). For multiband stuff, we
> could add an option that allows you to specify the dimension mapping.
>
> This approach would allow us to leverage GDAL's BAG reader without having
> to entirely write our own driver. We could then make native drivers for
> GDAL-readable formats as we need to going forward.
>
> Sound like a good idea?
>
> Howard
>
> > On Sep 3, 2015, at 10:43 AM, Dan Ames <dan.ames at byu.edu> wrote:
> >
> > Thanks Howard. All I've got right now is a 700MB file which is too big
> to experiment with. I'll see if we can get a couple of small examples put
> together next week and post them. Looks like this is going to be a more
> common file in the future since these inexpensive velodyne LiDAR pucks are
> growing in popularity. Not sure why we can't get it to just generate LAS
> files but we'll do whatever we have to do I suppose! - Dan
> >
> > On Thu, Sep 3, 2015 at 7:09 AM Howard Butler <howard at hobu.co> wrote:
> >
> > > On Sep 2, 2015, at 11:04 AM, Dan Ames <dan.ames at byu.edu> wrote:
> > >
> > > Hi all,
> > >
> > > Glad to see that PDAL is still under very active development! (last
> commit 1 hour ago!)
> > >
> > > Quick question: We have a new Velodyne VLP 16 LiDAR Puck that
> generates data in a .BAG file format.
> > >
> > > Does PDAL support this file? We'd like to convert it to LAS...
> >
> > PDAL does not support BAG at this time, but it is a very simple format.
> Do you have a few small example files we can permanently add to the test
> suite? Maybe we could whip something up...
> >
> > Howard
> >
>
>
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