[mkgmap-dev] Weird road speed

Sun Jan 19 20:06:24 GMT 2014

Hi Andrzej,

I can confirm that way 227105752 seems to get a wrong road speed when 
using your sample data. ("seems" because that's what GMapEdit tells me - 
there is no guarantee that there isn't a bug in GMapEdit)

I have done some tests and found a problem in mkgmap which need to be 
fixed although I cannot say now that it is the source of the described 
problem.

@Gerd: StyledConverter.postConvertRules can change the road speed in the 
type. But this hasn't been copied before so I guess it's changing the 
global type of the rule. Can you check that?
I added
	type = new GType(type);
at line 202 but this didn't change the overall result. So it seems not 
to be the only problem.

WanMil

> Hi WanMil
>
>  > you can find a rather complete documentation of all mkgmap:* tags in
>  > the mkgmap style documentation
>
> Thanks, this was the first place where I have looked, I don't know how
> could I miss it.
>
>  > osmid()=227105752 & highway=* { echotags "Wrong roadspeed?" }
>
> It is nice debugging facility. This is what I have found:
>
> All tags displayed by echotags look correctly.
>
> Value from mkgmap:road-speed-class is applied wrongly!
>
> In case of my sample data way ID=227105752 gets value computed for way
> ID=227105746, which is tagged as maxspeed=100. If I set other maxspeed
> for way ID=227105746 then this value appears at way ID=227105752.
> Cropping input data removes way ID=227105746 and speed for ID=227105752
> changes, but still is wrong.
>
> I have checked speeds in img using GPSMapEdit and verified with nuvi in
> route simulation. It is serious bug in mkgmap.
>