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--- osm_qgis [2023/03/04 18:50] – bushwalking
+++ osm_qgis [2023/12/11 09:20] (current) – osmconf changes bushwalking
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+====== Mapping with OSM Data in QGIS ======
 This topic builds on the [[nsw_lidar|Mapping from NSW Lidar with QGIS]] tutorials, though the data can also be used standalone.
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 There's a few steps to get going.
-====== Download raw data ======
+===== Download raw data =====
 Download the .PBF file (australia-latest.osm.pbf) from
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 http://download.geofabrik.de/australia-oceania/australia.html
-====== Convert data ======
+===== Convert data =====
-===== Basic =====
+==== Basic ====
 Open up the OSGEO4W Shell that comes with QGIS (look under Start -> All Programs -> QGIS)
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  https://github.com/AmericanRedCross/workflows/blob/master/converting_pbf_into_spatialite.md
-''ogr2ogr -f "SQLite" -dsco SPATIALITE=YES {name_of_new_file}.db {name_of_extracted_file}.pbf''
+<code>ogr2ogr -f "SQLite" -dsco SPATIALITE=YES {name_of_new_file}.db {name_of_extracted_file}.pbf</code>
-eg ''ogr2ogr -f "SQLite" -dsco SPATIALITE=YES E:\geodata\ausosm-20230303.db E:\geodata_raw\australia-20230303.osm.pbf''
+eg <code>ogr2ogr -f "SQLite" -dsco SPATIALITE=YES E:\geodata\ausosm-20230303.db E:\geodata_raw\australia-20230303.osm.pbf</code>
 It's useful to include the date in the filenames so you know when the data is from.
-===== Cropping =====
+==== Cropping ====
 If you need to crop the PBF file, the use the following command:
-''ogr2ogr -f "SQLite" -dsco SPATIALITE=YES -spat {x min} {y min} {xmax} {ymax} {output filename}.db {input file name}.osm.pbf''
+<code>ogr2ogr -f "SQLite" -dsco SPATIALITE=YES -spat {x min} {y min} {xmax} {ymax} {output filename}.db {input file name}.osm.pbf</code>
-eg For NSW data only, you could run: ''ogr2ogr -f "SQLite" -dsco SPATIALITE=YES -spat 141 -37.5 153.75 -28 E:\geodata\nswosm-20230303.db E:\geodata_raw\australia-20230303.osm.pbf''
+eg For NSW data only, you could run: <code>ogr2ogr -f "SQLite" -dsco SPATIALITE=YES -spat 141 -37.5 153.75 -28 E:\geodata\nswosm-20230303.db E:\geodata_raw\australia-20230303.osm.pbf</code>
 The coordinates above are in the following order: West South East North
-===== Fields =====
+==== Fields ====
 You may want to control the fields that you are importing from OSM. This is done using the osmconf.ini file, that can be found under your QGIS installation eg C:\Program Files\QGIS 3.22.10\apps\gdal\share\gdal\osmconf.ini
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 If you make any changes, take a backup of your osmconf.ini file. If you upgrade QGIS, it will revert to the default, and you'll need to restore osmconf.ini if you want those fields to come through next time you process an OSM file.
-====== Load data in QGIS ======
+It may be worth storing a copy of it in (say) your profile folder for QGIS, which is retained on upgrade eg C:\Users\<username>\AppData\Roaming\QGIS\QGIS3\profiles\default, and doesn't need admin permissions to edit.
+You can then use the ''-oo'' flag in the convert data process to point to the file location eg:
+<code>ogr2ogr -f "SQLite" -dsco SPATIALITE=YES -oo CONFIG_FILE=C:\Users\brennant\AppData\Roaming\QGIS\QGIS3\profiles\default\osmconf.ini E:\geodata\ausosm-20231210.db E:\geodata_raw\australia-20231210.osm.pbf</code>
+===== Load data in QGIS =====
 Open QGIS.
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 Once you have set up the connection, you can extract data using (for example) the Processing Toolbox->Vector Overlay->Extract/clip by extent. Select one of the layers within the file (points, lines, multipolygons) as the Input Layer, and select an area to load - by map or by file. Be careful not to make it too large, or you'll get very slow performance.
-====== Style data in QGIS ======
+===== Style data in QGIS =====
 Here are some sample bushwalking-based style files for OSM points and OSM lines:
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-====== Links ======
+===== Links =====
 Some other methods of getting OSM data into QGIS can be found at https://wiki.openstreetmap.org/wiki/QGIS_tutorial