Karta是一个开源的Python地理空间分析包，可简化处理矢量和栅格数据。
创建矢量地理空间：
point = Point((-130.0, 52.0), crs=LonLatWGS84)line = read_geojson("linedata.json")polygon = Polygon([(-515005.78, -1301130.53), (-579174.89, -1282271.94), (-542977.83, -1221147.82), (-437864.05, -1251641.55), (-438160.72, -1252421.48), (-437961.28, -1285314.00)], crs=NSIDCNorth)执行简单查询：
point2 = Point((-25.0, 48.0), crs=LonLatWGS84)point.distance(point2) # Distance in geographical unitsline.intersects(polygon) # True or Falsech = polygon.convex_hull() # Returns a new polygonch.to_shapefile("poly.shp")加载可操作的格栅数据：
grid = read_gtiff("landsat_scene.tif") # Leverages GDALgrid.profile(line) # Collect data along a linegrid.resample(500.0, 500.0) # Return a grid resampled at a new resolution
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