[mkgmap-dev] Bug report --remove-short-arcs=5 ???

Tue Feb 23 15:27:08 GMT 2010

Garvan & maew wrote:
> Mark Burton wrote:
>   
>>> If you zoom in I think the contours and provincial boundaries will show 
>>> up, but at full zoom nothing shows because the national boundaries are 
>>> missing. I am not sure exactly when they should show in mapsource, but 
>>> gpsmapedit tells me they are not in the img file at all.
>>>     
>>>       
>> OK, I think what's happening here is that the file contains a lot of
>> points that are so close together that the remove-short-arc process
>> just throws them away and then throws the ways away because they
>> contain less than 2 points. If you look at the diagnostics you get lots
>> of lines like:
>>
>> 2010/02/23 14:49:04 INFO (Osm5XmlHandler): cambodia.osm:   Way 200 (http://www.openstreetmap.org/browse/way/-2475) has consecutive nodes with the same coordinates (http://www.openstreetmap.org/?mlat=11.78333&mlon=103.63197&zoom=17) - merging node -187534 into -187526
>> 2010/02/23 14:49:04 INFO (Osm5XmlHandler): cambodia.osm:   Way 200 (http://www.openstreetmap.org/browse/way/-2478) has consecutive nodes with the same coordinates (http://www.openstreetmap.org/?mlat=11.78236&mlon=103.65167&zoom=17) - merging node -187581 into -187573
>> 2010/02/23 14:49:04 INFO (Osm5XmlHandler): cambodia.osm:   Way 700 (http://www.openstreetmap.org/browse/way/-2477) has consecutive nodes with the same coordinates (http://www.openstreetmap.org/?mlat=11.78327&mlon=103.34835&zoom=17) - merging node -187572 into -187564
>>
>> and then later you get:
>>
>> 2010/02/23 14:49:09 INFO (Osm5XmlHandler): cambodia.osm:   Way 100 (http://www.openstreetmap.org/browse/way/-11092) has less than 2 points - deleting it
>> 2010/02/23 14:49:09 INFO (Osm5XmlHandler): cambodia.osm:   Way 200 (http://www.openstreetmap.org/browse/way/-11091) has less than 2 points - deleting it
>> 2010/02/23 14:49:09 INFO (Osm5XmlHandler): cambodia.osm:   Way 100 (http://www.openstreetmap.org/browse/way/-11094) has less than 2 points - deleting it
>>
>> Can you reduce the number of points in the ways?
>>
>> Mark
>>
>>   
>>     
>
> Reducing the number of points sounds like a good idea and I have read of 
> tools that do this. The import is from shapefiles originally, so I think 
> I can manage this.
>
> But why do the national boundaries display correctly when I delete the 
> contour lines? Something is wrong. The line that is being dropped is a 
> single line with 22,668 points.
>
> Garvan
>   
PS. Thanks for your help.