[YLUG] Openstreetmap mapping event - activities
Matthew Gates
matthew at porpoisehead.net
Tue Jul 22 15:47:58 BST 2008
1. Missing street names (no GPS required)
Just today I found that there is a really nifty tool which highlights roads
without names, here: http://tinyurl.com/58mfyn
The reason there is no name might be that the original mapper might have
missed a street sign, omitted it in error when entering data, or maybe the
photo of the street sign wasn't legible. These road names should be filled
in.
Acceptable methods include going and finding a street sign, filling in from
prior knowledge (taxi drivers would be really useful here!), or getting the
name from a non-copyrighted source, like an out of copyright map, or
something like that. Names must not be copied from maps which are under
copyright.
2. Complete cycle route (possibly no GPS required)
There are a few missing national cycle network sections in York. The OSM
cycle map is here: http://tinyurl.com/5aj4u6
You can zoom in to York using the mouse wheel or drag a zoom box using
shift-draw.
It would be good to finish route of number 66, which has missing sections.
I don't know if it does connect up to route 65, but it seems likely. I now
that I have neglected the cycle routes a bit.
Much of this work is just find out which paths/roads the cycle network route
takes. For this no GPS is required, just a print out of the existing OSM
map.
3. Unmapped areas
As mentioned before, there are still some large chunks of the road network
to do. There are also area mapping tasks which I have not yet done much
work on. This includes parks, cemeteries, nature reserves and so on. The
basic idea is to trace the outline of these areas.
4. Road names review (no GPS required)
If you know the names of streets in your area, and it has already been
mapped, please look at the map at high zoom so that the street names are
printed, and check they are right. There are quite a few chances for
mistakes to creep in, so some sort of review would be great.
You can check names against out-of-copyright maps, but must not refer to
copyrighted maps for this task (besides, who says other maps do not contain
mistakes? The best way is to go and look at the sign).
5. Maplint
There's a thing called maplint which highlights parts of the map where there
are possible errors in the way the data has been added to the map. This
includes thinks like nodes being tagged as features which are not known
about by the map renderer. See the yellow blobs here:
http://tinyurl.com/6a56xf
What to do here is to load up JOSM, download the map data for that area and
look to see what is wrong with the map data. This might be a but confusing
if you've not used JOSM before.
6. Report map bugs
Mistakes on the map can be reported using the openstreetbugs site:
http://tinyurl.com/5qyhpw
If you know of a new road layout which is not yet on the map, or can see
there is a mistake on the map, like an omitted one way section, or a one
way which is backwards, or anything else which is not right, go to that
site and add a bug report.
7. Points of interest (no GPS required)
So far, I have been adding road, pubs, post boxes, telephone boxes,
recycling points, churches, hotels, public toilets, some car parks, the odd
cash machine and a few misc tourist attractions to the map.
There are many other features which I have not yet added. Conspicuously
absent are bus stops, restaurants. The list goes on... think of something
which can be mapped, and it becomes an item on the todo list.
In areas where the road network is already in place, it should be possible
to record the position of points of interest without needing a GPS
(although a GPS is helpful).
Choose a category and go map all of them in York :-)
Bus stops are a good one - find out roughly where a route goes, print out
the OSM map of the route, buy yourself a day ticket and mark the positions
of all the stops on a route. I think you'd have to concentrate really hard
to get them all, but it could work.
Matthew
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