[mkgmap-dev] [PATCH v1] Improve delete-tag-list with blacklist-tags-file and whitelist-tags-file

Sun Nov 29 18:54:49 GMT 2009

> Perhaps someone who is
> using that original option (I don't use it myself) would try this patch
> out and give us some feedback.
>   
No feedback yet so I want to give some examples why this is a valuable 
patch.

Using a whitelist is very useful for all maps that are interested in few 
tags only. This could be a map visualizing
* the maxspeed tag
* the lane tag
* the maxweight, maxheight ... tag
* all other QA-maps

On my (lame) machine I tested an 1GB OSM file and created a maxspeed map:
whitelist: 3 minutes
no whitelist: I aborted after 25 minutes

In future it might be interesting to preparse the style and the typ file 
to autocreate a whitelist file.

WanMil