Hi Michael,
I think it would be possible to change the code in mkgmap, but it would be
difficult. I still don't see any good reason to display an unnamed road with a
name. In fact, I've invested a lot of time in my area to fix OSM data where
mappers decided to name roads after the adddress of nearby houses.
Why would it be difficult to implement this?
The current implementation adds the label after the style rules were processed,
so the style decides what ways are routable and what labels are added to them.
The code tries to avoid adding address data to footways or cycleways.
You suggest to parse the data first, check every possible line with highway=*,
but at that stage mkgmap doesn't know if the style will add a routable line for
that road.
It would be much easier to change the logic which adds a label for the
addr:place numbers. The code is in HousenumberRoad.java and
it looks like this
if (!found){
if (labels[0] == null){
// add empty label so that the address search
name doesn't appear in the map
// when the original road did not have any label
labels[0] = "";
}
for (int i = 1; i < labels.length; i++){
if (labels[i] == null){
labels[i] = streetName;
log.info("added
label",streetName,"for",road,"Labels are now:",Arrays.toString(labels));
found = true;
break;
}
}
}
So, if you really want to display wrong road names you just have to remove the
block which adds an empty label and change the for loop to start with 0 instead
of 1.
I would add an option to do that if you or someone else can convince me that
this is a good idea. I think it would be plain wrong and very confusing.
ciao,
Gerd
________________________________________
Von: mkgmap-dev <[email protected]> im Auftrag von
Forstner Michael <[email protected]>
Gesendet: Donnerstag, 14. September 2023 12:08
An: 'Development list for mkgmap'
Betreff: Re: [mkgmap-dev] House numbers
Hello Gerd,
I tried the system with POI and it works now. But this is just a workaround,
which should not actually be necessary.
Is it really not possible to name unnamed streets after an addr:place
beforehand and then let the further process go through. OSM's work is then
taken over when a street name is taken over by a nearby building with
addr:place.
I think a similar command is necessary: set mkgmap:label:1='${addr:place}'
But it is unclear to me where this should be applied. I do not want to dig
around too much in the source code. You will probably know a lot better
about the source code.
Thank you!
Best regards
Michael
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