Custom OSM, styling points

Question

I have my own OSM file, which is created by some application which I written.

You can see some of nodes in my OSM file bottom of the post.

I want to fill +/-0.0001 latitude, +/-0.0001 longitude around my point.

I've tried these to style points, however, sadly, height and width attiributes seem to not working :/

What may be the other solution(s) to fill +/-0.0001 lat-long around my point?

layer-amenity-points.xml.inc

<Style name="points">
    <Rule>
      &maxscale_zoom18;
      <Filter>[amenity]='mycustomamenity'</Filter>
      <PointSymbolizer height="52" width="52" file="&symbols;/overlay_img.png" placement="interior"/>
    </Rule>
    <Rule>
      &maxscale_zoom17;
      <Filter>[amenity]='mycustomamenity'</Filter>
      <PointSymbolizer height="26" width="26" file="&symbols;/overlay_img.png" placement="interior"/>
    </Rule>
</Style>

<Layer name="amenity-points" status="on" srs="&osm2pgsql_projection;">
    <StyleName>points</StyleName>
    <Datasource>
      <Parameter name="table">
      (select amenity
      from &prefix;_point
      where amenity is not null
      ) as points</Parameter>
      &datasource-settings;
    </Datasource>
</Layer>

custom.osm

<node id="10000001" lat="0.476527778159" lon="0.999861111111" visible="true">
    <tag k="amenity" v="mycustomamenity"/>
    <tag k="myvalue" v="573"/>
</node>
<node id="10000002" lat="0.476805555937" lon="0.999861111111" visible="true">
    <tag k="amenity" v="mycustomamenity"/>
    <tag k="myvalue" v="576"/>
</node>
<node id="10000003" lat="0.477083333715" lon="0.999861111111" visible="true">
    <tag k="amenity" v="mycustomamenity"/>
    <tag k="myvalue" v="538"/>
</node>

Update

With MarkerSymbolizer in the answer below, I couldn't find how to draw squares. There is just circles can be created by MarkersSymbolizer. I want to draw squares.

Answer 1

I suggest to use different png symbols for different zoom levels, as it is done with bus stop symbols:

<Rule>
  &maxscale_zoom16;
  &minscale_zoom16;
  <Filter>[amenity]='bus_stop' or [highway]='bus_stop'</Filter>
  <PointSymbolizer file="&symbols;/bus_stop_small.png" placement="interior"/>
</Rule>
<Rule>
  &maxscale_zoom17;
  <Filter>[amenity]='bus_stop' or [highway]='bus_stop'</Filter>
  <PointSymbolizer file="&symbols;/bus_stop.p.12.png" placement="interior"/>
</Rule>

The width and height tags seem to be removed from the PointSybolizer according to the Wiki, but the png can be chosen depending on the zoom level.

Answer 2

First, do you really need to draw squares with these exact dimensions? Or just draw small points?

If it's the latter, use MarkerSymbolizer with given fill, width and height. PointSymbolizer can only display icons, it doesn't look at width/height properties.

If you need a circle at each point with given radius, you can alter the query to return those: select ST_Buffer(way, 11) as way, amenity from ... — but since the data in the PostGIS db is stored in EPSG:3857 format, I presume, you'll have to use meters instead of degrees. 0.0001 degree loosely corresponds to 11 meters at the equator. To render those circles, use a PolygonSymbolizer.

Finally, I noticed your query does not return a geometry column (way for osm2pgsql tables). Is that intended?