> Well done. Pretty much none of the others do. I look forward to your
> patches :)
Heres the patch for the default.style for osm2pgsql
node,way emergency text nocache,polygon
Wasn't worth a diff patch as it's only one line. (30 seconds)
> Mapnik for instance has manual rules - they will need to be changed.
> Worse than that osm2pgsql (the import tool) only imports certain keys
> so implementing emergency=* requires a complete reimport of the
> database - about 30 hours even on very good hardware. Then the
> changes need to be tested and deployed. I can get to 3 or 4 hours of
> actual developed work without even trying.
Probably should have used a diff patch but anyway heres a new file for mapnik
rules in inc/ dir (5 minutes most of which was spent getting a copy of mapnik
from svn)
Could be called layer-emergency-points.xml.inc
-----------------------------------------------------------------------
<Style>
<Rule>
&maxscale_zoom17;
<Filter>[emergency]='ambulance_station'</Filter>
<PointSymbolizer file="&symbols;/ambulance.p.16.png" />
</Rule>
<Rule>
&maxscale_zoom17;
<Filter>[emergency]='police_station'</Filter>
<PointSymbolizer file="&symbols;/police.p.16.png" />
</Rule>
<Rule>
&maxscale_zoom17;
<Filter>[emergency]='fire_station'</Filter>
<PointSymbolizer file="&symbols;/firestation.p.16.png" />
</Rule>
</Style>
<Layer name="emergency-points" status="on" srs="&osm2pgsql_projection;">
<StyleName>points</StyleName>
<Datasource>
<Parameter name="table">
(select
way,amenity,shop,tourism,highway,man_made,access,religion,waterway,lock,historic,emergency
from &prefix;_point
where emergency is not null
or shop is not null
or tourism in
('alpine_hut','camp_site','caravan_site','guest_house','hostel','hotel','museum','viewpoint')
or highway in ('bus_stop','traffic_signals','ford')
or man_made in ('mast','water_tower')
or historic='memorial'
or waterway='lock'
or lock='yes'
) as points</Parameter>
&datasource-settings;
</Datasource>
</Layer>
<Layer name="emergency-points-poly" status="on" srs="&osm2pgsql_projection;">
<StyleName>points</StyleName>
<Datasource>
<Parameter name="table">
(select
way,amenity,shop,tourism,highway,man_made,access,religion,waterway,lock,historic,emergency
from &prefix;_polygon
where emergency is not null
or shop is not null
or tourism in
('alpine_hut','camp_site','caravan_site','guest_house','hostel','hotel','museum','viewpoint')
or highway in ('bus_stop','traffic_signals')
or man_made in ('mast','water_tower')
or historic='memorial'
) as points</Parameter>
&datasource-settings;
</Datasource>
</Layer>
--------------------------------------------------------------------------------
And now the osm.xml file (30 seconds)
<Rule>
<Filter>[amenity] = 'police'</Filter>
&maxscale_zoom17;
<TextSymbolizer name="name" fontset_name="book-fonts" size="10"
fill="#734a08" dy="10" halo_radius="1" wrap_width="30"/>
</Rule>
<Rule>
<Filter>[amenity] = 'fire_station'</Filter>
&maxscale_zoom17;
<TextSymbolizer name="name" fontset_name="book-fonts" size="10"
fill="#734a08" dy="9" halo_radius="1" wrap_width="30"/>
</Rule>
replaced by
<Rule>
<Filter>[emergency] = 'police_station'</Filter>
&maxscale_zoom17;
<TextSymbolizer name="name" fontset_name="book-fonts" size="10"
fill="#734a08" dy="10" halo_radius="1" wrap_width="30"/>
</Rule>
<Rule>
<Filter>[emercency] = 'fire_station'</Filter>
&maxscale_zoom17;
<TextSymbolizer name="name" fontset_name="book-fonts" size="10"
fill="#734a08" dy="9" halo_radius="1" wrap_width="30"/>
</Rule>
Total time 6 minutes
Hundreds of hours, yeah right.
The program I've been talking about uses osm2pgsql and mapnik so I'm well aware
of them.
If your smart you could probably add the emergency data without having to
totally rerun osm2pgsql.
--
Cheers
Ross
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