矢量数据是GIS中最常见的数据类型之一,包括点、线、面等几何类型。QGIS支持多种矢量数据格式,如Shapefile、GeoJSON、KML等。 例子:加载Shapefile数据 假设我们有一个Shapefile文件,名称为cities.shp,存储了某个地区的城市信息。我们可以通过以下步骤在QGIS中加载该数据: ...
Map Composer: Create high-quality print layouts with legends, scale bars, and grid overlays.Data Interoperability: Supports standard geospatial formats (e.g., GeoTIFF, GeoJSON, KML, Shapefiles, PostGIS, SpatiaLite).Coordinate Reference System (CRS) Management: Robust support for projections and ...
Pin/Unpin labels, move, resize labels in QGIS Select, Save/Export feature as a new layer in QGIS Create a Basic Map – QGIS Author Juhi AcharyaCategories QGISTags Download Digital terrain DEM, QGIS 3.4.6, What is DEM2 Comments on QGIS Tutorial – 3D Map view in QGIS 3.4.6 ...
and one polygon layer. This makes the KML/KMZ import very quick. It adds the nested folder structure to a field in the QGIS layer which can then be used for sorting and filtering based on the folder structure in the KML. A KMZ can be exported with simple, categorized, and graduated QGI...
2 upload 'google_earth_path.kml'. 'Output'='GPX file'; 'Unit'='Metric'. 3 Click 'Convert & add elevation' 4 Save the generated .gpx file, e.g. 'GPS_Visualizer.gpx'. TCX Converter 1 Open 'GPS_Visualizer.gpx'. 2 Save CSV File, e.g. 'Den_Csv.csv'. ...
Display and export elevation profile plots with flexible symbology Flexible output direct to printer, or as image (raster), PDF, or SVG for further customization On-the-fly rendering enhancements using geometry generators (e.g. create and style new geometries from existing features) ...
QGIS 3 is teaching aMaster Classfor labeling because it’s all about the details. For example, callouts with Manhattan lines are lookingultra-polished. When you have overlapping labels, the traditional ArcGIS approach is to either try and fail using the Maplex Label Engine or convert to annota...
If I am using any of the shapefile based output strategies, then it fails randomly. Some of them succeed, eventually one of them kills everything. The KMZ output strategy just uses a custom library I made that builds a kml document with QtXml libraries and then zips them. ...
(10.0) Aktive Python-Erweiterungen AnotherDXF2Shape; autoSaver; AzimuthDistanceCalculator; BackupLayer; batchvectorlayersaver; batch_gps_importer; BoundingBox; BulkVectorExport; ClipMultipleLayers; ale; ezprinter; gistools; GpxSegmentImporter; ImportPhotos; kmltools; latlontools; loadthemall; Map...
I was trying to convert a string field containing date and time information, to a Date&Time field with the expression: to_datetime('1994-03-27 00:00:00','yyyy-MM-dd hh:mm:ss') It worked well until it find a specific date/time: ...