docs: info for creating wpml flightplan manually

docs/manuals/generate-flightplans.md

@@ -0,0 +1,53 @@
+# Generating Flightplans
+
+## Manually Via Command Line
+
+1. Calculate Flight Parameters:
+
+```python
+python calculate_parameters.py \
+    --forward_overlap 70 \
+    --side_overlap 70 \
+    --altitude_above_ground_level 115 \
+    --image_interval 2
+```
+
+> This will output a JSON that can be used in step 5 below.
+
+2. Creating Waypoints:
+
+```python
+python waypoints.py \
+    --project_geojson_polygon aoi.geojson \
+    --altitude_above_ground_level 115 \
+    --forward_overlap 70 \
+    --side_overlap 70 \
+    --generate_each_points \
+    --take_off_point LON,LAT \
+    --output_file_path ./waypoints.geojson
+```
+
+3. Add Eleveation Data From A DEM File:
+
+```python
+python add_elevation_from_dem.py dsm.tif waypoints.geojson waypoints_with_elevation.geojson
+```
+
+> Here we need a DEM in .tiff format.
+
+4. Create Placemark File (For KMZ File):
+
+```python
+python create_placemarks.py \
+    --waypoints_geojson waypoints_with_elevation.geojson \
+    --parameters '{"forward_photo_height": 84.0, "side_photo_width": 149.0, "forward_spacing": 20.95, "side_spacing": 44.6, "ground_speed": 10.47, "altitude_above_ground_level": 115}' \
+    --outfile placemarks.geojson
+```
+
+5. Create WMPL Flightplan:
+
+```python
+python wpml.py \
+    --placemark placemarks.geojson \
+    --outfile flightplan.wpml
+```

mkdocs.yml

@@ -74,6 +74,8 @@ nav:
       - Code of Conduct: https://docs.hotosm.org/code-of-conduct
       - FAQ: about/faq.md
       - The Team: about/team.md
+  - User Manuals:
+      - Flightplans: manuals/generating-flightplans.md
   - Developer Guide:
       - Setup: dev/setup.md
   - Timeline: timeline.md