[OSM-talk] Cities with grids

[Robert (Jamie) Munro]

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Tom Hughes wrote:
| In message <47CAA341.80806 at arjam.net>
|           "Robert (Jamie) Munro" <rjmunro at arjam.net> wrote:
|
|> What do other people think of this idea? Would a tag "floating=yes"
|>on
|> nodes be a good way to impliment it? Does someone have the ability to
|> write a tool to realign all floating nodes?
|
| No I don't think it would be a good idea ;-)
|
| If "tagging for renderers" is a bad idea then "tagging for editors" is
| a bad idea as well in my opinion.

I think you may misunderstand what is meant by "tagging for renderers".
The bad idea that is "tagging for renderers" is when you put mark a
river as a lake because lakes show in a nice shade of blue on the map,
but rivers show only as a line for each bank. Or you put a feature in
twice, once to show as an area, once to show as an icon because the
renderer doesn't draw both by default like you prefer.

There is another kind of tagging for renderers that is completely OK,
for example, it's perfectly find to have a tag called
osmarender:renderdirection that overrides osmarender's default name
direction drawing policy.

Having said all of that, that isn't what is happening in this case.

I am tagging a point as floating because I haven't surveyed the point
properly. I only know it's there because when I last visited the city I
noticed how you could stand in the road in many places and see 10s of
blocks perfectly straight in each direction, and I have carefully
aligned the ends of the street (with Yahoo Imagery). Of course, if
someone on the ground uses a survey-quality GPS, and finds the Yahoo
imagery is off, it's going to be much easier for them to correct the 80
or so ends of the streets and have the rest fall into line rather than
them have to correct all 400 points manually. Even if they are using
JOSM's align nodes line tool.

Robert (Jamie) Munro
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