[Mapnik-users] Customising footway rule in osm.xml wrecks all the ways

[Tom Chance]

Hello,

I'm making a customised map based upon OpenStreetMap's toolchain and osm.xml. I 
want to, amongst other things, distinguish between official and desired 
footways. I've used the tag "status=desired" to denote the latter.

When I change the footway rules to reflect this I get really odd results, look 
at the ways in this: http://www.treestation.org/problem.png

This works fine:

    <Rule>
      <Filter>[highway] = 'footway'</Filter>
      <MaxScaleDenominator>100000</MaxScaleDenominator>
      <LineSymbolizer>
        <CssParameter name="stroke">#fff</CssParameter>
        <CssParameter name="stroke-width">6</CssParameter>
        <CssParameter name="stroke-linejoin">round</CssParameter>
        <CssParameter name="stroke-linecap">round</CssParameter>
        <CssParameter name="stroke-opacity">0.4</CssParameter>
      </LineSymbolizer>
      <LineSymbolizer>
        <CssParameter name="stroke">salmon</CssParameter>
        <CssParameter name="stroke-width">2.0</CssParameter>
        <CssParameter name="stroke-dasharray">1,3</CssParameter>
        <CssParameter name="stroke-linejoin">round</CssParameter>
        <CssParameter name="stroke-linecap">round</CssParameter>
      </LineSymbolizer>
    </Rule>

This also works fine:

    <Rule>
      <Filter>[highway] = 'footway' and not [oneway] = 'yes</Filter>
      <MaxScaleDenominator>100000</MaxScaleDenominator>
      <LineSymbolizer>
        <CssParameter name="stroke">#fff</CssParameter>
        <CssParameter name="stroke-width">6</CssParameter>
        <CssParameter name="stroke-linejoin">round</CssParameter>
        <CssParameter name="stroke-linecap">round</CssParameter>
        <CssParameter name="stroke-opacity">0.4</CssParameter>
      </LineSymbolizer>
      <LineSymbolizer>
        <CssParameter name="stroke">salmon</CssParameter>
        <CssParameter name="stroke-width">2.0</CssParameter>
        <CssParameter name="stroke-dasharray">1,3</CssParameter>
        <CssParameter name="stroke-linejoin">round</CssParameter>
        <CssParameter name="stroke-linecap">round</CssParameter>
      </LineSymbolizer>
    </Rule>

But as soon as I change it to this or any other random key/value pair I get the 
above problem:

    <Rule>
      <Filter>[highway] = 'footway' and not [status] = 'desired'</Filter>
      <MaxScaleDenominator>100000</MaxScaleDenominator>
      <LineSymbolizer>
        <CssParameter name="stroke">#fff</CssParameter>
        <CssParameter name="stroke-width">6</CssParameter>
        <CssParameter name="stroke-linejoin">round</CssParameter>
        <CssParameter name="stroke-linecap">round</CssParameter>
        <CssParameter name="stroke-opacity">0.4</CssParameter>
      </LineSymbolizer>
      <LineSymbolizer>
        <CssParameter name="stroke">salmon</CssParameter>
        <CssParameter name="stroke-width">2.0</CssParameter>
        <CssParameter name="stroke-dasharray">1,3</CssParameter>
        <CssParameter name="stroke-linejoin">round</CssParameter>
        <CssParameter name="stroke-linecap">round</CssParameter>
      </LineSymbolizer>
    </Rule>

Any help would be much appreciated!

Kind regards,
Tom

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