[gdal-dev] gdal_viewshed

Eli Adam eadam at co.lincoln.or.us
Thu May 7 09:05:43 PDT 2020

Congrats on another great release!

On Thu, May 7, 2020 at 7:20 AM Even Rouault <even.rouault at spatialys.com> wrote:
> The 3.1.0 release is a new feature release with the following highlights:
> - [gdal_viewshed](https://gdal.org/programs/gdal_viewshed.html):
> new utility for viewshed algorithm

On the documentation of this, it says:
[with the image with two dots] A computed visibility for two separate
-ox and -oy points on a DEM.
gdal_viewshed -md 500 -ox -10147017 -oy 5108065 source.tif destination.tif

The image with two dots makes me think that there can be multiple
observer inputs.  Is that the case?  Is the syntax for that just to
keep adding more -ox, -oy, (and oz)?  For instance, gdal_viewshed -md
500 -ox -10147017 -oy 5108065 -ox -10147117 -oy 5108165+100 source.tif

Best regards, Eli

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