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Published 20 hours ago • verified publisher icon makepath

Test Viewshed Analysis against other Viewshed Implementations

Open yiftachn opened this issue 3 years ago • 3 comments

Has anyone tested the correctness of the viewshed analysis output? Assuming ESRI's ArcGIS as the ground truth, as it is the most popular, paid, solid and established viewshed product, Does xarray-spatial viewshed returns identical output?

yiftachn avatar Feb 22 '22 17:02 yiftachn

Personally I don't trust any mathematical software unless I can verify that the maths is implemented correctly.

It you want to compare the two, feel free to do so and report your results here if you wish.

ianthomas23 avatar Feb 24 '22 15:02 ianthomas23

@yiftachn We may have a test to check against GDAL's viewshed which was the inspiration for this tool. @davidnfox I think we should also test against Esri just to know how different the two are.

brendancol avatar Apr 29 '22 23:04 brendancol

Great, im following

On Sat, Apr 30, 2022, 02:43 Brendan Collins @.***> wrote:

@yiftachn https://github.com/yiftachn We may have a test to check against GDAL's viewshed which was the inspiration for this tool. @davidnfox https://github.com/davidnfox I think we should also test against Esri just to know how different the two are.

— Reply to this email directly, view it on GitHub https://github.com/makepath/xarray-spatial/issues/669#issuecomment-1113863656, or unsubscribe https://github.com/notifications/unsubscribe-auth/AJCIP3TE2VYUVQ2YKR6RL7LVHRXZZANCNFSM5PCBXBBA . You are receiving this because you were mentioned.Message ID: @.***>

yiftachn avatar May 02 '22 16:05 yiftachn