[mkgmap-dev] Multiple relation names

Mon Mar 25 20:08:58 GMT 2013

Hi Thorsten,

Apologies, this is the first time I have worked with relations and I need 
some clarity.

Firstly:
>set route_display_name='${route_display_name}'
>
>This will overwrite the old route_display_name, you need to
>add it.

I was under the impression this would add route_display_name to the line 
setting it to route_display_name from the relation

Next:
Looking at your code it simply seems to concatenate relation tags: 
route_blue_name, osmc:name, distance and name in various combinations 
depending which exist.

I see osmc:name is an internal variable; is this not created internally by 
mkgmap? Perhaps it stands for the concatenation of the names of relations 
sharing this way, is this what you mean?

Cheers, Geoff.

-----Original Message----- 
From: Thorsten Kukuk
Sent: Monday, March 25, 2013 7:41 PM
To: Development list for mkgmap
Subject: Re: [mkgmap-dev] Multiple relation names

On Mon, Mar 25, Geoff Sherlock wrote:

> I’m sure I’ve read on this list that this is possible. For walking maps I 
> would the way name to consist of all possible related names for that way. 
> For instance for the relations named ‘Icknield Way’ and ‘Chiltern Way’, I 
> would like a way that is contained in both relations to be named ‘Icknield 
> Way Chiltern Way’.
>
> Currently I am displaying names for relations using the following in the 
> relations style file:
> type=route {
>     apply {
>         set route_display_name='${name}';
>     }
> }
>
> Then I changed the names of tracks, bridleways, cycleways and footways in 
> the lines file with:
> type=route & route_display_name=* {
>     apply {
>         set route_display_name='${route_display_name}'
>     }
> }
> (highway=track | highway=bridleway | highway=cycleway | highway=footway) & 
> route_display_name=* {set name='${route_display_name}' continue 
> with_actions}
>
> This is working fine except for two points:
>
> 1. Where a way shares two relations only one name is shown (presumably the 
> last alphabetically).

set route_display_name='${route_display_name}'

This will overwrite the old route_display_name, you need to
add it.
For example what I do:
(route=foot | route=hiking) &
        (osmc:symbol=blue | osmc:symbol ~ 'blue:.*') &
        (name=* | osmc:name=*) &
        (network=iwn | network=nwn | network=rwn | network=lwn) {
        apply { set route_blue='$(route_blue):${osmc:symbol}'|
                                 '${osmc:symbol}';
                set route_blue_type='${network}';
                set route_blue_name=
                    '$(route_blue_name), ${osmc:name} (${distance})' |
                    '$(route_blue_name), ${osmc:name}' |
                    '${osmc:name} (${distance})' | '${osmc:name} |'
                    '$(route_blue_name), ${name} (${distance})' |
                    '$(route_blue_name), ${name}' |
                    '${name} (${distance})' | '${name}'
              }
}

So route_blue_name contains afterwards a comma seperated list
with all osmc:name of all routes.

  Thorsten

-- 
Thorsten Kukuk, Project Manager/Release Manager SLES
SUSE LINUX Products GmbH, Maxfeldstr. 5, D-90409 Nuernberg
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg)
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