Changes between Initial Version and Version 1 of ZooWorkshop2010/Files

Timestamp:

Sep 5, 2010, 4:15:57 PM (16 years ago)

Author:

djay

Comment:

--

ZooWorkshop2010/Files

@@ +1 @@
+= 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 ==
+
+{{{
+#!python
+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 ==
+
+{{{
+#!python
+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 ==
+
+{{{
+#!python
+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 ==
+
+{{{
+#!python
+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>
+}}}