import processing layer = iface.activeLayer() selected = processing.run("qgis:saveselectedfeatures", {'INPUT':layer, 'OUTPUT':'memory:'})["OUTPUT"] temp_lines = processing.run("qgis:polygonstolines", {'INPUT':selected,'OUTPUT':'memory:'})["OUTPUT"] line_path = "C:/Users/Me/Desktop...
geoms, segs = explode_polygons_to_line_segments("/path/to/singleparts.shp", dps=5) with open("/tmp/exploded.csv","w") as fo: fo.write("COUNT\tGEOM\n") for key in segs: fo.write("{}\t{}\n".format(segs[key], geoms[key])) print("Found {} unique segments".format(len(seg...
But since I do not really need the ridgeline as a geometry with duplicate attributes, I wonder if I can add a symbol to the polygon layer that represents the ridgeline. Not sure how to go about this using the geometry of the layer to calculate the center line of the polygon to create ...
If everything goes well you get a nice and smooth center line fit for labeling. QGIS Requirements === The script needs QGIS 3.0 or higher in order to work. It solely relies on tools provided by QGIS. Idea === I got the idea to make a processing script from this tweet: https://twi...
Affected QGIS version: master Redmine category:db_manager Assignee: Giuseppe Sucameli It seems related at #15029 drag & drop shp file throws this error: Feature write errors: Creation error for features from #0 to #10187. Provider errors was: PostGIS error while adding features: ERROR: Geome...
PhD research in urban transportation, need GIS. 1. ArcGIS: expensive, only on Windows; 2. QGIS: limited features; slow, unreproducible workflow; 3. GRASS GIS: commands hard to use; 4. PostGIS: database interface, nice plugins; slow (on disk); 5. R: statistics + GIS libraries (rgdal...
Click on the "Run" button to execute the tool. Once the tool finishes running, you will see a new shapefile created with the holes removed.By following these steps, you can easily remove holes within polygons in ArcGIS Pro using the "Eliminate Polygon Part" tool.In QGIS, you can remove...
To augment the linestring file so that it knows what polygon it falls into, you will need to perform a spatial join on the two datasets. I went ahead and did this in QGIS (using 'join attributes by location') with your two datasets; the resulting shapefile is attached. The new file ...
1.建表2.添加GIST索引3.插入数据3.1 点(POINT) 或使用多点(MULTIPOINT)QGIS中显示几何如下: 3.2 线(LINESTRING) 或使用多线(MULTILINESTRING)QGIS中显示几何如下: 3.3多边形(POLYGON) 或使用多边形集合(MULTIPOLYGON)QGIS中显示几何如下: 3.4几何集合 PostgreSQL 空间st_contains,st_within空间包含搜索优化 - 降IO和...
1.建表 2.添加GIST索引 3.插入数据 3.1点(POINT) 或使用多点(MULTIPOINT) QGIS中显示几何如下: 3.2 线(LINESTRING) 或使用多线(MULTILINESTRING) QGIS中显示几何如下: 3.3多边形(POLYGON) 或使用多边形集合(MULTIPOLYGON) QGIS中显示几何如下: 3.4 几何集合 ...