Differences

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--- arma3:terrain:qgis-real-world-data-tutorial [2019/03/31 22:28] – added new update from ross. snakeman
+++ arma3:terrain:qgis-real-world-data-tutorial [2024/08/02 18:53] (current) – links added. snakeman
@@ Line 1: / Line 1: @@
-====== QGIS Real World Data Tutorial ======
+====== ArmA 3 QGIS Real World Data Tutorial ======
-ArmA 3 QGIS Real World Data Tutorial By Ross
+[[https://www.pmctactical.org/forum/viewforum.php?f=68|ArmA 3 Forum]], [[:arma3|ArmA 3]], [[arma3:config|ArmA 3 Config]], [[arma3:missions|ArmA 3 Missions]], [[arma3:modeling|ArmA 3 3D Modeling]], [[arma3:scripting|ArmA 3 Scripting]], [[arma3:terrain|ArmA 3 Terrain]], [[arma3:texturing|ArmA 3 Texturing]], [[arma3:tools|ArmA 3 Tools]]
+**ArmA 3 QGIS Real World Data Tutorial** by Ross
 This process has often been described using Global Mapper, but I wanted to detail the equivalent steps within the open source (free) GIS app - QGIS.
@@ Line 53: / Line 55: @@
 ===== Heightmap: =====
-This tutorial covers single raster heightmap as per the kind you will find on opentopo [[http://opentopo.sdsc.edu/raster?opentopoID=OTSRTM.082015.4326.1|here]], I will detail steps for heightmaps spread across muliptle rasters in another update. as they will require additional steps likely including Merge / Build Virtual Raster commands. This section does not cover any re scaling of heightmap, which I would recommend against anyway. Remember [[https://pmc.editing.wiki/doku.php?id=arma:terrain:grid_cell_size|Grid size x Cell size]] should = the same size (meters) as your source heightmap selection.
+This tutorial covers single raster heightmap as per the kind you will find on [[https://portal.opentopography.org/raster?opentopoID=OTSRTM.082015.4326.1|opentopo]], I will detail steps for heightmaps spread across multiple rasters in another update. as they will require additional steps likely including Merge / Build Virtual Raster commands. This section does not cover any re scaling of heightmap, which I would recommend against anyway. Remember [[https://pmc.editing.wiki/doku.php?id=arma:terrain:grid_cell_size|Grid size x Cell size]] should = the same size (meters) as your source heightmap selection.
 **Drag and drop your heightmap '.asc' into QGIS**
@@ Line 106: / Line 108: @@
 {{https://pmc.editing.wiki/images/Ross-QGIS-Tutorial-AdvancedDigitizing.gif}}
-After the last **left mouse click** from the step above, the tool is still waiting to plot more points, so to finalise the square do a **right mouse click**
+After the last **left mouse click** from the step above, the tool is still waiting to plot more points, so to finalize the square do a **right mouse click**
 {{https://pmc.editing.wiki/images/Ross-QGIS-Tutorial-20b.png}}
@@ Line 145: / Line 147: @@
 import os\\
-os.system(r%%'''%%gdalwarp -t_srs EPSG:**32620** -wo SOURCE_EXTRA=1000 -tr **5.0 5.0** -srcnodata "-9999" -r cubic -of GTiff -te **576787.687480 1841104.815839 597267.687480 1861584.815839 D:/Arma/Heightmaps/Opentopo/output_srtm.asc** **D:/Arma/QGIS/Montserrat/converted.tif**%%'''%%)
+os.system(r%%'''%%gdalwarp -t_srs EPSG:**32620** -wo SOURCE_EXTRA=1000 -tr **5.0 5.0** -srcnodata "-9999" -r cubic -ot Float32 -of GTiff -te **576787.687480 1841104.815839 597267.687480 1861584.815839 D:/Arma/Heightmaps/Opentopo/output_srtm.asc** **D:/Arma/QGIS/Montserrat/converted.tif**%%'''%%)
 Some explanation of the key parameters:
@@ Line 180: / Line 182: @@
 ==== For single tile export ====
-**Load in just the '.map' files generated from Terra incognita into QGIS**
+**Load in just the '.map' files generated from Terra Incognita into QGIS**
 {{https://pmc.editing.wiki/images/Ross-QGIS-Tutorial-1b.png}}
@@ Line 321: / Line 323: @@
-Before loading the satellite image into Terrrain Builder delete the .bmp.aux file
+Before loading the satellite image into Terrain Builder delete the .bmp.aux file
 {{https://pmc.editing.wiki/images/Ross-QGIS-Tutorial-08.png}}
@@ Line 502: / Line 504: @@
 You can also export your terrain to a browser interface if you want - **File** > **Export to web**
-**Coming Soon:**
-  * Assisted image classification - for creation of mask