[mkgmap-dev] House numbers and styles

Mon May 26 07:50:38 BST 2014

Hi Colin,

I think you found a bug in the housenumber processing. 
The current implementation uses the streetnames which exist before style processing
to produce a map of existing streets and nodes with addr info. After style processing, It tries to find the 
nodes and ways with the same name as that of a road. With your changes, this will probably 
fail. 
If I got that right, we have to create another map that maps old and new streetnames.

@WanMil: Do you have time to look at this?

Gerd

Date: Sun, 25 May 2014 22:18:35 +0200
From: colin.smale at xs4all.nl
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: [mkgmap-dev] House numbers and styles

I have some rules which modify name, addr:street and mkgmap:street in "lines" and "points" which apply some transformations to the street names. The idea is to normalise the names by removing punctuation and standardising abbreviations. The resulting map is missing the house numbers for streets whose name I have modified. In the style rules, I apply identical transformations to the way (looking for highway=* & name=*) and points (looking for addr:street and mkgmap:street, separately of course). I expect that mkgmap can match up the address nodes with the street because the street names are still identical, but something is not working right. The modified street name is working fine - that is displayed and is in the index (i.e. I can search for it as a destination). However for these streets only, there don't seem to be any house numbers present. A search for a specific (existing) number on the road finds the road with no numbers, at the centroid of the street. Other streets whose names don't get changed, will allow me to find a specific house number and get the location right as well.

Does anyone have any ideas what might be going wrong here? Am I trying to do something that can never work?

Is it possible that something in the address handling in mkgmap is using the original street name, before the style has been applied?

Is it possible that the styles don't get applied to address-only nodes?

I have the following in "lines":

# CS: normalise by getting rid of . in abbreviations
highway=* & name ~ '.*[.].*' {set name='${name|subst:.-=>-|subst:\.~> |subst: +~> }'}

... and the following in "points":

# CS: normalise by getting rid of . in abbreviations
#mkgmap:street ~ '.*[.].*' {set mkgmap:street='${mkgmap:street|subst:.-=>-|subst:\.~> |subst: +~> }'; echo "fixed mkgmap:street ${mkgmap:street}"}
mkgmap:street ~ '.*[.].*' {set mkgmap:street='${mkgmap:street|subst:.-=>-|subst:\.~> |subst: +~> }'}
#addr:street ~ '.*[.].*' {set addr:street='${addr:street|subst:.-=>-|subst:\.~> |subst: +~> }'; echo "fixed addr:street ${addr:street}"}
addr:street ~ '.*[.].*' {set addr:street='${addr:street|subst:.-=>-|subst:\.~> |subst: +~> }'}

Thanks in advance for any pointers!

Colin

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