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oniregoc

Sept. 3, 2024 09:02:26

I have problems trying to extract the osm area from an "openstreetmap" file and using "osm_import":

"osm_import" works fine when using an osm file extracted from the "openstreetmap" website but... does not work when using "osmosis" to extract the area you want to use, from a pbf file (download.geofabrik.de / large area data)

- because when doing so, "Osmosis" cuts the data according to the coordinates you request but does not check that the "node_id" data needed to use the "way" expression is in the truncated part of the file! which means that the resulting file does not contain some "node_id" variables which make "osm_import" announce an error: "Invalid source /obj/geo1/osm_import1/read_in_map_data.
(Error: Python error: Traceback (most recent call last):
File "", line 329, in
File "", line 190, in build
KeyError: '4355555387'
). "

A solution would probably be to check that "node_id" exists when "way" needs it and if "not" ignore this data and move on to the next one?

The code is in python and should be "easily" modifiable by a programmer...but I am not a python programmer! Thanks for any help!

oniregoc

Sept. 4, 2024 15:55:49

Hello ! found the solution !

at line 192 until line "polys = poly" replace code by :

for node_id in way.nodes:
            
                try:
                    node_id
                
                    print(node_id)
                        
                    node = self.nodes[node_id]
                    pos_xy = self.get_relative_coordinates([float(node.lat), float(node.lon)])
                    positions.append((pos_xy[0], 0, pos_xy[1]))
                    latlongs.append([float(node.lat), float(node.lon)])
        
                    points = geo.createPoints(positions)
                    poly = geo.createPolygon()
        
                    for x, point in enumerate(points):
                        point.setAttribValue("latitude", latlongs[x][0])
                        point.setAttribValue("longitude", latlongs[x][1])
        
                    if ONLY_CLOSE_BUILDING_SHAPES:
                        if "building" not in way.tags and "buildingpart" not in way.tags and "building_part" not in way.tags: 
                            poly.setIsClosed(0)
                    else:
                        if not closed:
                            poly.setIsClosed(0)
        
                    if READ_BUILDING_COLORS:
                        if "buildingcolour" in way.tags:
                            rgb = QColor(way.tags["buildingcolour"])
                            Cd = [rgb.red()/255.0, rgb.green()/255.0,rgb.blue()/255.0]
                            poly.setAttribValue("Cd", Cd )
                       
                        
                    poly.setAttribValue("hou_id", way.id)
                    poly.setAttribValue("hou_way", 1)
                    for tag in way.tags:
        
                        clean_value = way.tags[tag]
        
                        try:                  
                            if tag == "name":
                                poly.setAttribValue("hou_name", clean_value)
                            else:
                                poly.setAttribValue(tag, clean_value)
                        except:
                            pass
        
                    for point in points:
                        poly.addVertex(point)
                    
                    polys[way.id] = poly
                
                except:
                    pass

Hope it help someone !