| Version 1 (modified by djay, 14 years ago) |
|---|
ZOO Workshop 2010 Files
As some files cause many trouble when we use copy and paste, we've put the examples in this page.
ogr_ws_service_provider.py File
import osgeo.ogr import libxml2 def createGeometryFromWFS(my_wfs_response): doc=libxml2.parseMemory(my_wfs_response,len(my_wfs_response)) ctxt = doc.xpathNewContext() res=ctxt.xpathEval("/*/*/*/*/*[local-name()='Polygon' or local- name()='MultiPolygon']") for node in res: geometry_as_string=node.serialize() geometry=osgeo.ogr.CreateGeometryFromGML(geometry_as_string) return geometry return geometry def Boundary(conf,inputs,outputs): if inputs["InputPolygon"]["mimeType"]=="application/json": geometry=osgeo.ogr.CreateGeometryFromJson(inputs["InputPolygon"]["value"]) else: geometry=createGeometryFromWFS(inputs["InputPolygon"]["value"]) rgeom=geometry.GetBoundary() if outputs["Result"]["mimeType"]=="application/json": outputs["Result"]["value"]=rgeom.ExportToJson() outputs["Result"]["mimeType"]="text/plain" else: outputs["Result"]["value"]=rgeom.ExportToGML() geometry.Destroy() rgeom.Destroy() return 3
Second code block on page 26
def extractInputs(obj): if obj["mimeType"]=="application/json": return osgeo.ogr.CreateGeometryFromJson(obj["value"]) else: return createGeometryFromWFS(obj["value"]) return null def outputResult(obj,geom): if obj["mimeType"]=="application/json": obj["value"]=geom.ExportToJson() obj["mimeType"]="text/plain" else: obj["value"]=geom.ExportToGML()
Third code block on page 26
def Boundary(conf,inputs,outputs): geometry=extractInputs(inputs["InputPolygon"]) rgeom=geometry.GetBoundary() outputResult(outputs["Result"],rgeom) geometry.Destroy() rgeom.Destroy() return 3
Code block on page 27
def ConvexHull(conf,inputs,outputs): geometry=extractInputs(inputs["InputPolygon"]) rgeom=geometry.ConvexHull() outputResult(outputs["Result"],rgeom) geometry.Destroy() rgeom.Destroy() return 3 def Centroid(conf,inputs,outputs): geometry=extractInputs(inputs["InputPolygon"]) if geometry.GetGeometryType()!=3: geometry=geometry.ConvexHull() rgeom=geometry.Centroid() outputResult(outputs["Result"],rgeom) geometry.Destroy() rgeom.Destroy() return 3
zoo-ogr.html File
<h3>Single geometry processing</h3> <ul> <li> <input type="button" onclick="simpleProcessing(this.value);" value="Buffer"/> Distance: <input id="bufferDist" value="1"/> </li> <li> <input type="button" onclick="simpleProcessing(this.value);" value="ConvexHull"/> </li> <li> <input type="button" onclick="simpleProcessing(this.value);" value="Boundary"/> </li> <li> <input type="button" onclick="simpleProcessing(this.value);" value="Centroid"/> </li> </ul>
