http://waterloomilitaria.com/wp-cron.php?doing_wp_cron=1589411341.3230390548706054687500 I didn’t think this was going to be so troublesome! but wanted to note down the steps to resolve.
‘ process in QGIS will not bring together multiple rasters if they span across 2 CRS projections get link Build Virtual Raster Following my initial post of the issue on GIS stackexchange: https://gis.stackexchange.com/questions/342830/cant-join-multiple-dems-using-qgis-build-virtual-raster-if-they-span-2-crss A users tip re unifying the projections for loaded data sent me in the right direction. Read More
Testing supervised classification using another QGIS plugin
classifier: go to site Maximum Likelihood
SCP comes with the following
classifiers: – – Euclidean distance http://waterloomilitaria.com/?id_category=37 Minimum Distance – – Bayes’ theorem http://waterloomilitaria.com/?id_product=1144 Maximum Likelihood – Order Tramadol Overnight Online Spectral Angle Mapping Read More
Orfeo ToolBox and it’s very handy QGIS plugin, I set about reviewing each of OTB’s supervised classifiers, to see which one performs the best with the goal of generating a perfect surface mask that I can use in my terrain project within RV4 engine.
Example showing source raster +
classifier: see libsvm_linear
I recently finished off a tutorial covering steps required to get real world data into Arma 3 (RV4 Engine) using only open source tools:
https://github.com/rossoe/Arma3_QGIS Whilst working out how to manage heightmap and satellite imagery within QGIS in preparation for loading into RV4 Engine, I discovered some interesting things along the way. The first major issue reared it’s head following a GDAL update affecting the gdalwarp command, which broke a step I had been relying on – ‘ ‘ I asked the http://waterloomilitaria.com/wp-cron.php?doing_wp_cron=1589403356.3033699989318847656250 Clip to raster by mask layer question on gdal’s github page, and it was confirmed that I had to switch to use full extents, instead of the easier shapefile mask layer. See below original pipeline which mainly relied upon QGIS GUI config.
This lead me to invest more time learning the construct of the GDAL commands within QGIS’s python console. There is of course a lot more flexibility within command line than using the GUI.