Hi All,<br><br>with the new JOSM creating landuse areas e.g.
residential is not very comfortable. While I assume that will be
enhanced sooner or later, I'd like to share an idea.<br><br>My general
assumption is that many areas end at ways. For example industrial and
residential areas are often separated by streets, as are residential
areas and forests. In the old api I liked to re-use segments for
getting clean areas which were abutting also in the biggest zoom level.
Commercial navi system maps seem to do the same.
<br><br>My proposal is to have an area selection function in JOSM and
potlatch. In the area mode any click selects an area that is surrounded
by ways. ALT+Click adds another area to selection, ctrl+click takes
reduces the selected area from selection. Areas can be merged and
split. A selection takes the smallest possible area of tagged and
untagged ways around the clicked spot.
<br><br>This can be done without changing the data structure, if the
renderer and groups of ways are aware of the direction. If, for
example, an area contains one way that has the wrong direction, it gets
a reverse bit in the group that builds the area. This would also
overcome the issue that many ways have to be doubled, because their
direction does not fit into an intended area.
<br><br>With this suggestion it should be much easier to set the right
landuse tags. It would be even easy to tag every single peace of the
map with very few additional ways. This would be a great advantage to
commercial maps which usually have many spaces where the map is simply
white. I believe we could make it better and tag any white space into
something useful, as farmland, fields, grass or whatever. It just needs
a practical way of doing it. What do you think?
<br><span class="sg"><br>Archimedeus</span>