Hi,
I want to remove a long list of tags from the builtin-tag-list by
different actions. The advantage is that specialised styles that do not
need these tags are faster and do consume less memory.
== Tags that are no longer used ==
Tag: osm:id
There are only two references in mkgmap source code: HighwayHook sets
this tag and StyleConverter that reads this tag. I think this is not an
OSM tag but a tag set internally by mkgmap.
If so we should rename it to mkgmap:osmid. Any objections?
Tag: openGeoDB:postal_codes
I haven't found any references in the source code. openGeoDB workout
have been removed with locator branch merge.
== Tags that can be moved to style handling ==
I am thinking about moving some static coded rules (e.g. name of a POI
street is taken from tag "addr:street") to the style system as it has
been done with other location items:
mkgmap:street!=* & addr:street=* { set mkgmap:street='${addr:street}' }
This has two advantages:
1. Speed improvement for styles that don't use this information. (Marko:
this should help you with your need for speed improvements for special
styles)
2. More flexiblity: If someone likes to use different tags for a POI
street name it is easy to configure that.
Possible downside:
* Little more memory requirement for styles that use address information
The tags to be changed are:
addr:street
addr:housename
addr:housenumber
addr:phone (is currently not used in mkgmap)
phone
is_in
== Tags that are used only if --route is set ==
I am not sure if that's correct. Can someone please confirm that?
access
bicycle
carpool
delivery
emergency
except
exception
foot
goods
hgv
motorcar
motorcycle
psv
restriction
route
taxi
toll
WanMil
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