| 1 | = ZOO Workshop 2010 Files = |
| 2 | |
| 3 | As some files cause many trouble when we use copy and paste, we've put the examples in this page. |
| 4 | |
| 5 | |
| 6 | == ogr_ws_service_provider.py File == |
| 7 | |
| 8 | {{{ |
| 9 | #!python |
| 10 | import osgeo.ogr |
| 11 | import libxml2 |
| 12 | |
| 13 | def createGeometryFromWFS(my_wfs_response): |
| 14 | doc=libxml2.parseMemory(my_wfs_response,len(my_wfs_response)) |
| 15 | ctxt = doc.xpathNewContext() |
| 16 | res=ctxt.xpathEval("/*/*/*/*/*[local-name()='Polygon' or local- name()='MultiPolygon']") |
| 17 | for node in res: |
| 18 | geometry_as_string=node.serialize() |
| 19 | geometry=osgeo.ogr.CreateGeometryFromGML(geometry_as_string) |
| 20 | return geometry |
| 21 | return geometry |
| 22 | |
| 23 | def Boundary(conf,inputs,outputs): |
| 24 | if inputs["InputPolygon"]["mimeType"]=="application/json": |
| 25 | geometry=osgeo.ogr.CreateGeometryFromJson(inputs["InputPolygon"]["value"]) |
| 26 | else: |
| 27 | geometry=createGeometryFromWFS(inputs["InputPolygon"]["value"]) |
| 28 | rgeom=geometry.GetBoundary() |
| 29 | if outputs["Result"]["mimeType"]=="application/json": |
| 30 | outputs["Result"]["value"]=rgeom.ExportToJson() |
| 31 | outputs["Result"]["mimeType"]="text/plain" |
| 32 | else: |
| 33 | outputs["Result"]["value"]=rgeom.ExportToGML() |
| 34 | geometry.Destroy() |
| 35 | rgeom.Destroy() |
| 36 | return 3 |
| 37 | }}} |
| 38 | |
| 39 | == Second code block on page 26 == |
| 40 | |
| 41 | {{{ |
| 42 | #!python |
| 43 | def extractInputs(obj): |
| 44 | if obj["mimeType"]=="application/json": |
| 45 | return osgeo.ogr.CreateGeometryFromJson(obj["value"]) |
| 46 | else: |
| 47 | return createGeometryFromWFS(obj["value"]) |
| 48 | return null |
| 49 | |
| 50 | def outputResult(obj,geom): |
| 51 | if obj["mimeType"]=="application/json": |
| 52 | obj["value"]=geom.ExportToJson() |
| 53 | obj["mimeType"]="text/plain" |
| 54 | else: |
| 55 | obj["value"]=geom.ExportToGML() |
| 56 | }}} |
| 57 | |
| 58 | == Third code block on page 26 == |
| 59 | |
| 60 | {{{ |
| 61 | #!python |
| 62 | def Boundary(conf,inputs,outputs): |
| 63 | geometry=extractInputs(inputs["InputPolygon"]) |
| 64 | rgeom=geometry.GetBoundary() |
| 65 | outputResult(outputs["Result"],rgeom) |
| 66 | geometry.Destroy() |
| 67 | rgeom.Destroy() |
| 68 | return 3 |
| 69 | }}} |
| 70 | |
| 71 | == Code block on page 27 == |
| 72 | |
| 73 | {{{ |
| 74 | #!python |
| 75 | def ConvexHull(conf,inputs,outputs): |
| 76 | geometry=extractInputs(inputs["InputPolygon"]) |
| 77 | rgeom=geometry.ConvexHull() |
| 78 | outputResult(outputs["Result"],rgeom) |
| 79 | geometry.Destroy() |
| 80 | rgeom.Destroy() |
| 81 | return 3 |
| 82 | |
| 83 | def Centroid(conf,inputs,outputs): |
| 84 | geometry=extractInputs(inputs["InputPolygon"]) |
| 85 | if geometry.GetGeometryType()!=3: |
| 86 | geometry=geometry.ConvexHull() |
| 87 | rgeom=geometry.Centroid() |
| 88 | outputResult(outputs["Result"],rgeom) |
| 89 | geometry.Destroy() |
| 90 | rgeom.Destroy() |
| 91 | return 3 |
| 92 | }}} |
| 93 | |
| 94 | == zoo-ogr.html File == |
| 95 | |
| 96 | |
| 97 | {{{ |
| 98 | <h3>Single geometry processing</h3> |
| 99 | <ul> |
| 100 | <li> |
| 101 | <input type="button" onclick="simpleProcessing(this.value);" value="Buffer"/> |
| 102 | Distance: |
| 103 | <input id="bufferDist" value="1"/> |
| 104 | </li> |
| 105 | <li> |
| 106 | <input type="button" onclick="simpleProcessing(this.value);" value="ConvexHull"/> |
| 107 | </li> |
| 108 | <li> |
| 109 | <input type="button" onclick="simpleProcessing(this.value);" value="Boundary"/> |
| 110 | </li> |
| 111 | <li> |
| 112 | <input type="button" onclick="simpleProcessing(this.value);" value="Centroid"/> |
| 113 | </li> |
| 114 | </ul> |
| 115 | }}} |