I am wondering, where I could make the mistake seeing the wrong result, which is coming from the Viewshed plugin in QGIS. There are a few options, I selected the "Viewshed", which looks like this: The map generated doesn't match with the same visibility map generated by Heywhatsthat.com service:
and accordingly the .csv file, from where my data comes from:
I put height as a m.a.s.l. value, observer height as a 2 meters above ground, radius - 5km.
To be honest I don't understand from where this result comes from.
I found some answer here: Interpreting viewshed results attribute table
but it doesn't solve my problem, as it refers to the intervisibility analysis.
Can anyone help?
After the brief DEM conversion done here: Raster -> Conversion -> Translate (Convert format)
I am still getting the wrong result, as per below:
I found a similar problem here:
and I tried this, however the major problem is the target CRS selection:
This is admittedly optional, although without any choice I am getting exactly the same result as above.
After selection the EPSG 27700 OSGB British National Grid 1936 or alternatively another one from Great Britain, I am getting nothing after the Viewshed processing.