[Talk-us] Check your turn:lanes

Hans De Kryger hans.dekryger13 at gmail.com
Wed Aug 24 23:31:19 UTC 2016


The link Jack's talking about,

https://github.com/mapbox/mapping/issues/180

Regards,
Hans

On Aug 24, 2016 4:09 PM, "Toby Murray" <toby.murray at gmail.com> wrote:

> Mind sharing the link to the GitHub issue?
>
> Do they think that "none" is an invalid option and are replacing it
> with a blank globally? If so, this should be shut down immediately.
> "none" and blank are both valid values and while I wouldn't mind
> seeing it be consistent, any such edit would need to be discussed
> before it is done.
>
> Toby
>
> On Wed, Aug 24, 2016 at 5:19 PM, Jack Burke <burkejf3 at gmail.com> wrote:
> > An active OSM group (leaving names, etc. out while they check out what I
> > reported) is running a script or plug-in or challenge called "to-fix"
> that
> > is apparently supposed to help fix incorrect turn:lanes values (and maybe
> > other things, I haven't investigated deeply enough).
> >
> > The problem is, it's breaking the values instead.  I found a section of
> road
> > that I'd added turn:lanes to in order to provide lane guidance at an
> exit.
> > My original value of "none|none|none|none|none;slight_right" was
> replaced by
> > "||||slight_right".
> >
> > While, per the wiki, there's nothing particularly wrong with a null value
> > for a field vs. specifying "none" as the value, it *does* make a
> difference
> > when there are two values in the field, as in my example above.  They
> turned
> > a continue-on-or-exit lane into an exit-only lane.
> >
> > So if you find broken lane guidance like that, with empty fields where
> > "none" would also be appropriate, that's probably what happened.  Check
> the
> > history on the way and see if you can backtrack what happened
> (fortunately,
> > the group involved here included a url to a github issue where they are
> > tracking what they're doing).
> >
> > Now I have 200 miles of Interstate to go back through and re-check.
> >
> > --jack
> >
> >
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> >
>
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