[josm-dev] Custom K/V Tags in MAPCSS?

[Jo]

Hi Alex,

When I want to add information to an offline OSM file, which I don't want
to be uploaded, I use tags like odbl, created_by, etc. These tags get
stripped automatically from the objects before JOSM uploads them. You have
to set JOSM to expert mode to see them, though.

In your case it might be a problem that those tags are also stripped when
objects are merged.

I included a style which demonstrates this. When I set odbl=new on a bus
route for example, all the stops and the member ways are highlighted.

Hope this helps in some way. I don't think JOSM's mapcss implementation
cares about which tags you use. The source code is open though, so you can
check.

Jo


2014-07-17 3:07 GMT+02:00 Alex Rollin <alex.rollin at gmail.com>:

> Hi!
>
> Let me try again, I am sorry I am not giving the right information.
>
> We work with OSM!  You can check out our city on the map:
>
> http://www.openstreetmap.org/#map=13/-6.5988/106.7778
>
> We do a LOT of tracing and we also add a lot of POIs.  We have a very nice
> JOSM Style that works very well.
>
> However, we also use some local OSM files.  The example is JULY_SURVEY.osm
> (a local OSM file, saved on the desktop)
>
> In the survey file we put some points that have key=oursurvey
> value=information
>
> Our issue is that the MAPCSS in JOSM refuses to style this data.  We assume
> this is because it is a custom key.
>
> This is the style we are trying to use:
>
> node[oursurvey=information] {
>     icon-image: "icons/triangle.png";
>
>
> This common key DOES work :
>
> node[amenity=information] {
>     icon-image: "icons/triangle.png";
>
> This ACTUAL key also works:
>
> node[tourism=information] {
>     icon-image: "icons/triangle.png";
>
> But, why can't we use a custom tag?  If we use an OSM tag, there is a
> chance we will accidentally upload this data, which is just some
> housekeeping data, and not good data for the OSM database.
>
> This seems like a bug, that the MAPCSS engine in JOSM won't recognize a
> custom key.
>
> I highly recommend you try it for yourself!
>
> I just added a JOSM ticket because I must think after so much testing that
> this is not desired behavior. It seems the folks here think I have some
> kind of data or issue making a style.  No!  I have a VERY long MAPCSS file
> with lots of POI tags working very well, really!
>
> https://josm.openstreetmap.de/ticket/10271#ticket
>
>
>
> --
> Alex
>
>
> On Thu, Jul 17, 2014 at 7:42 AM, Tod Fitch <tod at fitchdesign.com> wrote:
>
> >
> > On Jul 16, 2014, at 5:11 PM, Alex Rollin wrote:
> >
> > > I think this is a bug.  Maybe someone would like to check it for
> > themselves.
> > >
> > > Basically, it seems to me that it is not possible to use a custom key
> to
> > > create a new style rule.
> > >
> > > These are MapCSS examples we have tried:
> > >
> > > We want to use a custom tag for our style, like this, but it does not
> > work:
> > >
> > > node[oursurvey=information] {
> > >    icon-image: "icons/triangle.png";
> > >
> > >
> > > This common key DOES work :
> > >
> > > node[amenity=information] {
> > >    icon-image: "icons/triangle.png";
> > >
> > > This ACTUAL key also works:
> > >
> > > node[tourism=information] {
> > >    icon-image: "icons/triangle.png";
> > >
> > >
> > > Why doesn't our custom key work? Is there a list of pre-approved tags
> > that
> > > are allowed?
> > >
> > > --
> > > Alex
> >
> > I haven't used the CartoCSS setup yet but I did a custom map using the
> > older Mapnik XML styles and one thing that comes to light pretty quick it
> > that you need two things for something to render: First it has to get
> into
> > your local database, so you need to change osm2pgsql.style to tell
> > osm2pgsql what tags and tag values you need. Second you need to describe
> > how the tag/values should be rendered in Mapnik either through mapnik XML
> > directly or via CartoCSS.
> >
> > Sounds like you have the second items covered but I don't recall you
> > mentioning that you've addressed the first part about getting your custom
> > tags into the PostgreSQL database.
> >
> > Tod
> _______________________________________________
> josm-dev mailing list
> josm-dev at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/josm-dev
>
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