[GIS] extract amenity from pbf file using osmosis

openstreetmaposmosis

I want to extract some amenity(atm) from a pbf file.
Here is what i've found.

osmosis –read-pbf myfile.pbf –tf accept-nodes amenity=atm –write-xml atm.osm

Myfile.pbf is a file for Paris area (France). It's 211Mo.
The atm.osm file is 1.8Go I think it's really big for only ATM of Paris.
So is it the good way to extract atm?
I also tried with rarely amenity and it's always a 1.8Go file.
Is there a way to read atm.osm to know if the data is good?
If I'm not on the right way I want to extract ATM from the data to insert it in the future in a database.

Best Answer

I found a different query :

osmosis --read-pbf myfile.pbf --node-key-value keyValueList='amenity.atm' --write-xml atm.osm

I got a 250ko xml file with all the atm. Hope it can help other peolple

Related Solutions

[GIS] creating vector layer from OSM file using OpenLayers

OpenLayers OSM protocol does not know about 'visible' nodea, but you could easily extend the base class methods with a little bit of code that checks for the visibile attribute before adding the node to the list of nodes like the following (I hope your javascript-fu is strong, alsoe beware that this is untested code so it could not run right the first time):

    //Initialise the vector layer using OpenLayers.Format.OSM
    var pois_layer = new OpenLayers.Layer.Vector("Brussels POIs", {
        strategies: [new OpenLayers.Strategy.Fixed()],
        protocol: new OpenLayers.Protocol.HTTP({
            url: "brussels_center_filtered.osm",   
            format: new OpenLayers.Format.OSM({
                getNodes: function(doc) {
                        var node_list = doc.getElementsByTagName("node");
                        var nodes = {};
                        for (var i = 0; i < node_list.length; i++) {
                            var node = node_list[i];
                            if(node.getAttribute("visible")) {
                                var id = node.getAttribute("id");
                                nodes[id] = {
                                    'lat': node.getAttribute("lat"),
                                    'lon': node.getAttribute("lon"),
                                    'node': node
                                };
                            }
                        }
                        return nodes;
                    },
            })
            }),
            projection: new OpenLayers.Projection("EPSG:4326")
        });

[GIS] Extract specific amenity Osmosis with Java api

Well this question includes multiple points that I try to answer step by step:

1. Amount of data
A full planet dump is giant and will break every not well designed application. So I highly recommend to rely on existing solutions at least for filtering the full planet dump.
On the other hand I don't know your exact usecase, but I'm pretty sure that you will need updates from time to time. So maybe setup and syncing a local DB or calling an API like overpass is a wise design decision:
http://wiki.openstreetmap.org/wiki/Data

2. Parsing XML data
Parsing the data depends on fileformat as well. You can use XML of course, but most devs say it's slow compared to protobuf. You might recycle existing solutions from osmosis or JOSM:
http://wiki.openstreetmap.org/wiki/Frameworks
http://wiki.openstreetmap.org/wiki/Elements
Maybe it's easier to learn by example who already did the job, e.g. OSM2World:
https://github.com/tordanik/OSM2World

3. Undestanding XML tags
Beside the parsing, you will need to get an feeling about the use of certain tags.
Not all restaurants have a cuisine tag. Some nodes are only placed within building outlines so you might need to copy the address from shape to your POI. Also sometimes the restaurant is tagged at the building itself (here: a closed OSM way) and you might need to calculate the center (what about multipolygones? ;) for a virtual node. All in all this needs time to learn about how the community collects and tags data and you need to be patient till you will get clean results.

Best Answer

Related Solutions

[GIS] creating vector layer from OSM file using OpenLayers

[GIS] Extract specific amenity Osmosis with Java api

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