from mmqgis.mmqgis_library import * geometry_type = "Lines" crs = QgsCoordinateReferenceSystem("PROJ4:+proj=longlat +datum=WGS84 +no_defs") x_spacing = 10 y_spacing = 10 x_left = -170 x_right = 170 y_bottom = -80 y_top = 80 output_file_name = "world-grid.geojson" mmqgis...
layer.changeGeometry(feature.id(),geom) 3.数据转换数据转换 数据转换可以是将数据从一种格式转换到另一种格式,例如从Shapefile转换到GeoJSON。 #导入必要的模块 fromqgis.coreimport* importos #设置输出目录 output_dir=/path/to/output #转换数据格式 ...
2024-02-03T09:42:26CRITICALFeature(0)from“黄埔各街道DIY” has invalid geometry.Pleasefix the geometry or change the “Invalidfeatures filtering” optionforthisinput or globallyinProcessingsettings. 用Processing Toolbox的Check Validity工具检查,在输出的Error ouput的attriubte table里可以看到错误信息 ...
symbol=QgsSymbol.defaultSymbol(layer.geometryType()) categories=[] forvalue,colorincolor_map.items(): symbol_layer=QgsSimpleFillSymbolLayer() symbol_layer.setColor(QColor(color)) symbol.changeSymbolLayer(0,symbol_layer) category=QgsRendererCategory(value,symbol,value) categories.append(category) render...
symbol.changeSymbolLayer(0,symbol_layer) #清理QGIS环境 QgsApplication.exitQgis() 14.3解释解释 1.初始化初始化QGIS环境环境:设置QGIS的前缀路径,并初始化QGIS应用。 2.加载网络图层加载网络图层:使用QgsVectorLayer加载网络数据。 3.构建网络图构建网络图:利用networkx库构建网络图。 4.计算最短路径计算最短路径:...
apply #3793: libfcgi cannot change mapserv's environment variables on windows german translation update fix 55a1778 with patched qt on osgeo4w add support for mixed case geometry types of PostGIS 2.0 Reduce top and side margins for attribute table dialog Remove the (hopefully) last SVN referen...
in case the multiple intersects are of different geometry type the choice was to return nothing (again: not a bug because there isn't a choice that makes sense except maybe to return null, or 0 or -1 instead of nothing at all). Member agiudiceandrea commented Nov 15, 2024 • edited...
1、读取转存的ESRI ShapeFile文件,若文件不为空,通过函数“name=layer.name(),type=layer.geometryType()”获取矢量图层名称和几何类型; 2、对图层进行判断,针对点/线/面/图层和水深点图层,判断方法分别为“if(name==‘LIGHTS’and type==0)”、“if(name==‘DEPCNT’and type==1)”、“if(name==‘DEP...
Inner rings (holes) are saved as separate polygons in Geometry Export metadata.txt minimum version now has to be 2.0.0 to be fetched from repository, even though Master is 1.9 Fix code broken by more API changes QgsFeature::attributes() no longer QVariant (API change in QVariant typecastin...
Canvas=otherCanvasself.reset()defreset(self):self.is_start=False# 开始绘图self.is_vertical=False# 垂直画线self.cursor_point=Noneself.points=[]self.rubberBand.reset(True)defchangeRubberBandColor(self,r,g,b):self.rubberBand.setColor(QColor(r,g,b,50))defchangeFieldValue(self,field...