[mkgmap-dev] [PATCH] apply_local action (variable substitution in relation members)

Tue Dec 22 15:45:20 GMT 2009

On Dec 21, 2009, at 21:54, Marko Mäkelä wrote:

> On Mon, Dec 14, 2009 at 11:41:05PM +0200, Marko Mäkelä wrote:
>> Yet another solution would be to have a special syntax of variable
>> substitution that would bypass the valueTags, say, $(var) instead of ${var}:
>> 
>> (type=boundary | type=multipolygon) & boundary=administrative & name=*
>> { apply
>>  {
>>    set mkgmap:boundary_name='$(mkgmap:boundary_name)/${name}' | '${name}';
>>  }
>> }
> 
> I implemented this (see the attached patch).  It was easier than I thought,
> and the runtime penalty should be low.

Hm... I tried this out, however I couldn't get a name for the following boundary which runs down the middle of the Rhine:

  http://www.openstreetmap.org/?lat=49.23141&lon=8.38788&zoom=16&layers=B000FTF

This I suppose is a rather complicated example, as the line in question is an administrative boundary without a name, but it has five relations defining various boundaries. Am I doing something wrong, or does the way this item was tagged prevent the name from being displayed?

Cheers.