> Better rendering of tree_row on OSM Carto

Please go to http://github.com/gravitystorm/openstreetmap-carto/issues/new
and explain the problems with the current rendering, then we can discuss
how to fix it.
On Tue, Feb 12, 2019 at 6:43 PM Peter Elderson <pelder...@gmail.com> wrote:

> Netherlands have very extensive use of tree rows. Lets take the roads.
> Roads in our polders are almost always lined with tree rows, exept for the
> many crossings, roundabouts, tunnels, bridges etcetera. These roads stretch
> many kilometers. The lining is often not singular, but lines each direction
> separately. Most of the time there are separate bicycle lanes, often lined
> with tree rows. For water drainage there are drainage ditches on both
> sifes, again often lined with tree rows.
>
> A motorway will often have double or triple tree rows on both sides and in
> the middle. On both sides of the motorway there usually is a parallel road,
> again lined with trees.
>
> Areas are often lined with trees. Even wood areas are often lined with
> tree rows. Water areas and waterways have tree rows most of the time.
>
> In cities, you will find rows of trees almost everywhere, not just lining
> roads.
>
> You can't map the individual trees. It's just too much and it changes
> faster than you can enter them. So most of the time, they are not mapped at
> all, for lack of properly rendering tree_row tag. The current fat green
> band rendering on Carto is worse than no rendering at all. Double and
> triple tree_rows are now often mapped as pieces of forest, and because of
> the regularity of appearance, orchards.
>
> For long single lane roads with single tree rows on each side, no bicycle
> and pedestrian ways on the sides and not too many interruptions, a
> tree-lined tag could be used. Most of the time, you would have to cut the
> road into many short pieces just to tag the tree lining variations correct.
> I'm not in favor of that.
>
> IMO the way to go is:
> - Better rendering of tree_row on OSM Carto (not our concern, but...)
> - Then, and only then, decent tagging of tree rows is an option.
>
> Tagging for the renderer? Well. Rendering is about the only use case for
> tagging tree rows, so how could it be anything else?
>
> Vr gr Peter Elderson
>
>
> Op di 12 feb. 2019 om 06:01 schreef Mark Wagner <mark+...@carnildo.com>:
>
>> On Mon, 11 Feb 2019 15:55:50 +0200
>> Tomas Straupis <tomasstrau...@gmail.com> wrote:
>>
>> >   Two things to add:
>> >   1. At least in Lithuania cartographic (topographic) "tree row" is
>> > defined as "a row of trees groing alongside a road or railway". That
>> > is random trees somewhere in a field do not become a "tree row" even
>> > if they are in a row.
>> >   2. If (1) is true in other countries, maybe "tree_row" should be an
>> > attribute of a road/railroad? Say
>> > highway=residential+tree_row=left|right|both. This way it would be
>> > much more convenient to create cartographically correct maps in 25k
>> > 50k scales without resorting to complex generalisation operations like
>> > displacement?
>> >
>>
>> Tree rows in the United States are usually planted as windbreaks.  As
>> such, they're usually either perpendicular to the prevailing winds, or
>> run along the edge of someone's property line.  Occasionally they're
>> planted for shade purposes, in which case they run east-west.  Tree
>> rows planted parallel to a road are uncommon.
>>
>> "tree_row" as an attribute of a road might make sense, in the
>> same way as "sidewalk" tags do.  As a replacement for
>> "natural=tree_row", it excludes a lot of the existing uses.
>>
>> --
>> Mark
>>
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