Closed Skimkat closed 3 years ago
Hello! This seems to be an issue of Lat/Lon data format. I've implemented a check-up in the code for this, but apparently they don't work as they should... The viewshed model is 2 milion by 2 milion pixels large, I assume because your DEM data is in degrees and not in meters. You should reproject the DEM in a metric coordinate system (regardless of the analysis you're up to). Or, better, you should create the DEM using the correct coordinate system for your contours. Regards, Zoran
Hi Zoran,
Thank you, I'll try again. The DEM was projected in WGS84/UTM (southern Hemisphere).
Regards,
Sarien
On 2020-01-27 16:22, Zoran Čučković wrote:
Hello! This seems to be an issue of Lat/Lon data format. I've implemented a check-up in the code for this, but apparently they don't work as they should... The viewshed model is 2 milion by 2 milion pixels large, I assume because your DEM data is in degrees and not in meters. You should reproject the DEM in a metric coordinate system (regardless of the analysis you're up to). Or, better, you should create the DEM using the correct coordinate system for your contours. Regards, Zoran
-- You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub [1], or unsubscribe [2].
[1] https://github.com/zoran-cuckovic/QGIS-visibility-analysis/issues/37?email_source=notifications&email_token=AOMLUECSPKLGZJODGTWZOR3Q73U2FA5CNFSM4KL5QU52YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEJ7VKTA#issuecomment-578770252 [2] https://github.com/notifications/unsubscribe-auth/AOMLUECJVJXC6T7UWN5XCZDQ73U2FANCNFSM4KL5QU5Q
Im using QGIS3.10. in Window 8.1 OS Created viewpoints using the plugin Use a DEM created from Vector contour line with IDW interpolation Get the following errors -
"C:/Users/Sarien/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\ViewshedAnalysis\algorithms\viewshed_raster.py", line 233, in processAlgorithm refraction = refraction ) File "C:/Users/Sarien/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\ViewshedAnalysis\algorithms\modules\Raster.py", line 147, in set_master_window self.window = np.zeros((full_size, full_size)) MemoryError: Unable to allocate array with shape (1998403, 1998403) and data type float64