[Talk-ca] Fixing GeoBase unconnected ways/nodes.

[Sam Vekemans]

Cool,
For the Saanich area (092b11), i've been dropping them in.
But i probably should be going in there and connecting the way to exising
data.

In the south of Duncan area, the local are mapper has been helping me out,
by after i dropped in the GeoBase roads (from the file that Austin made, but
didn't use roadmatcher)  he went ahead and manually attached the roads.
While adding more map features all around.
Also, for the Saanich area, other mappers have been also fixing it.

This method seems to be working for me, however, i would prefer to be only
adding CanVec data to the areas that have already been proceed with adding
the geobase roads already.

However, for the north of Duncan area, i uploaded the CanVec data, even
though the geobase roads havent been imported.

The indirect result is, that people will see that other data is in there,
and want to go ahead and add in the roads the manual way probably faster
than they would otherwise. All this means is that OSM will grow faster :)


It looks like this is something to be done AFTER roadmatcher, and the
results.osm has been imported.
So maybe there is a way to add your addition to the whole geobase2osm
routeen?
Like add it in as the next step for people to follow?

Anyway, great job (i wish i could understand how to use it :)
Cheers,
Sam

P.S.  I guess the wiki is the best way to keep track of process right?  But
maybe also listing it on the main Canada Page listing who the main mappers
are for each area would help too? Or atleast who is the most active contact
can be listed.


Twitter: @Acrosscanada
Facebook: http://www.facebook.com/sam.vekemans


On Wed, Jul 22, 2009 at 12:09 AM, Simon Wood <simon at mungewell.org> wrote:

> Hi all,
> There are a lot of unconnected ways, created when GeoBase road matcher
> found a match with existing data and did not connect new nodes. With the
> work I have been doing with distance maps, I have inadvertantly found a way
> to speed up the fixing of these - still by hand, but pretty quick otherwise.
>
> Tools are available here:
> http://svn.openstreetmap.org/applications/utils/distance_maps/
>
> Method:
> 1) download an area of OSM data in JOSM and save to local disk.
> 2) Run 'distance.pl <lat> <long> -1' (lat/long of a highway node, or close
> to one)
> 3) Convert 'data.txt' to temp OSM file with
> 'awk -f data2node.awk < data.txt > temp_nodes.osm'
> or use
> 'grep '^#' data.txt | sed 's/#//' > test_nodes.osm'
> 4) Load both real OSM and test_node.OSM as seperate layers in JOSM
>
> You can now easy see which highways are routable from you choosen start
> point, with the '-1' option junctions of 3 (or more) nodes and terminus
> nodes are highlighted. If a way does not contain (or end with) any of these
> then is is not routable, most likely because it is not connected.
>
> Switch to real data layer and connect GeoBase way to pre-GeoBase ways by
> merging nodes ('m') or joining end node to nearby way ('j'). Pretty quick
> once you get started....
>
> 5) Upload fixed data and select a new area to work on....
>
> Any volunteers to adopt some areas? I'll start with Alberta south of 22X
> and west of 2
> Simon
>
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>
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