[OSM-talk] [tagging] Feature Proposal - landuse=orchard

[Lennard]

Emilie Laffray wrote:

> That would mean that Mapnik needs to be checking a secondary field to 
> determine what to display. If the renderer doesn't do that, you will end 
> up with a map that is poorer in the end. In your case, that would mean 

That's not really so different as highway + access, or 
highway=service+service=*. And while it is nice to keep render 
complexity in mind when you design a tagging scheme, don't let it make a 
case against the more logical tagging.

> increasing the size of the table produced by osm2pgsql by one extra 
> column. Overall, you are increasing complexity with little or no benefits.

Which means 1 bit per row, for the most part.

> I am not sure it makes sense in the end since were are getting exactly 
> the same of information if you are using the tag directly in landuse.

Extensibility. Plain and simple. If you come up with a new category for 
agricultural=*, and while you wait for the renderers to pick that up, 
you're still getting a plain landuse=agricultural rendered. Not a white 
spot on the map. Data users that don't need the complexity of different 
agricultural uses only need to process the main landuse=agricultural 
tag, and not try to group various agricultural landuse types into 1.


-- 
Lennard