[GRASS-user] Spatial data exchange formats

[Daniel Victoria]

Hi Rich,

You are correct about GRID being a raster format in ESRI world. But from
your description, I believe what you have is a coverage, which is ESRI
vector format for ArcINFO (shapefile beeing another vector format).

LiDAR data is obtained as XYZ point cloud. That's why you probably have
vector data. Further processing is needed to transform it to a raster
format.

Cheers
Daniel

On Mon, Jun 18, 2018 at 11:25 AM Rich Shepard <rshepard at appl-ecosys.com>
wrote:

> On Mon, 18 Jun 2018, Daniel Victoria wrote:
>
> > Actually, your ADF file is part of a vector format from ESRI named
> > Coverage, that includes some files in a folder with the name of your data
> > and some other data in a folder called INFO. Here is some more info on
> the
> > Coverage format [1]
>
> Daniel,
>
>    I thought a grid meant raster, not vector. I wonder why LiDAR data is
> presented in a vector format rather than a raster DEM. Off-hand, I don't
> know how I'll use vector maps for hydrological modeling, particularly storm
> water runoff.
>
>    In the meantime, I've switched focus to munging 30 years of river stage
> height data. Still have 7 years to go. Tedious, even with emacs macros and
> awk scripts, but I'll finish this effort before returning to the
> topography.
>
> Many thanks,
>
> Rich
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