QGIS tips & Tricks

Convert LineString to polygons (e.g. with roads)

1. In the Processing Toolbox, open Reproject layer
2. In “Target CRS”, select Project CRS: EPSG:3006 - SWEREF99 TM and click Run
3. Select the newly created layer.
4. In the Processing Toolbox, open Buffer and add Distance 2,5 meter (since it adds buffer on both sides it will equal 5m).

Prepare roads correctly for export

Roads are supported as LineString in the placement tool. However, it looks nicer on the map if it is a single MultiLineString. So, if it consists of multiple LineStrings, convert them to a single MultiLineString

1. Select the layer
2. In the Processing Toolbox, open Promote to multipart and Run. This creates a new layer.
3. With the newly created layer selected.
4. In the toolbar, click Toggle Editingto enable it, Select All Features and finally Merge Selected Features.

Make XYZ basemap tiles from a big image (e.g. aftermath map)

1. Open QGIS and go to Layer - Add Layer- Add Raster Layer. Add the big image.
2. In Processing Toolbox, open `Generate XYZ tiles (Directory)
   1. Settings:
      Min zoom: 15
      Max zoom: 19
      (the rest default settings?)

Set the correct type data before export

Before exporting, make sure the feature(s) have the correct attributes (see picture)

Supported types and info (Work in progress, probably missing some types)

1. area - the area at BL’s disposal
2. oktocamp - normally the area within 50m of a fireroad
   (why is this needed when we have “area”?)
3. fireroad - Wider roads for vechicles to drive on and shall not be blocked.
4. minorroad - also known as walking paths
5. publicplease - A note to use put public offerings here. We can reuse fireroad geojson and just add a wider buffer in the placement tool code.
6. container
7. naturereserve
8. propertyborder
9. friends
10. forbidden
11. toilet
12. bridge
13. parking
14. slope
15. plaza
16. quarter
17. neighbourhood
18. hiddenforbidden
19. redsoundzone
20. orangesoundzone
21. yellowsoundzone
22. greensoundszone
23. bluesoundzone
24. closetosanctuary