[Talk-ca] canvec mep feature 1150012 10- Coastal water - (Eau côtière) = Ocean - ( Océan )

Sam Vekemans acrosscanadatrails at gmail.com
Mon Feb 15 09:37:59 GMT 2010


Hi all,

It looks like on the chart i had it listed as natural=water.  From a quick
discussion on the IRC, it looks like the natural=coastline does this job.
As we do NOT put polygons of water out in the ocean.
Apparently, it's in the typ file for when Garmin MapSource is able to
convert the osm files. ... and it COULD get shown up so then all the coastal
areas is blue.  (as if it was 1 hudge polygon).

I have not confirmed this myself, as it still shows up as white space... but
it might be because my typ files is set to openmtbmap styles.

In the Ibycus topo, Dale added this feature in. (but put it as 'small lake'
.. however, the 'sea/ocean typ is available,  as code 0x28 (0x0028 with
gpsmapedit)

I propose that these .osm files DO get made available.   So then custom maps
can be generated, were the user can go to the NRCan site and download that
.osm file.   So then it can be added in, when creating a map. ... ie.
converting the .osm file using mapgen or mkgmap.

Also note that there IS a polygon in the canvec dataset that is the same
(but more detailed) than the currennt coastlines that are availalable in OSM
right now.   One option is that the .osm file can be loaded into osm, then
you cut the polygon so that only the coastline edge is shown and remove the
rest.  then change the polyline to natural=coastline and swap it for what
currently exists.

That other polygon is actually from GeoBase NHN data, where it is filed
under 'island', where (for example) all of Vancouver Island is available as
a single large polygon.  thats why you see alot of points around that say
'place=island name=Vancouver Island'

... so in sum, i recommend NOT importing it... BUT still making the Oceab
polygon .osm files available for use.

Cheers,
Sam

P.S. im working on the canvec conversion chart a but more.  Here is the link
to edit directly
https://spreadsheets.google.com/ccc?key=0Am70fsptsPF2clAwc29KaXlGaGFwS1piUkxZWjc0ekE&hl=en

I created a new sheet and added in columns for the canvec descriptions (just
like how on the wiki it is listed) i also added in the french version of it
too.

Over on the origional char, i also am adding in what the garmin typ file
standard is, as this excercies is the 1st step in trying to internationalize
all of the OSM tags so then they can be understood.  In another chart, i'll
be adding in what the other map editors & tools use, to create the same
thing.   Garmin MapSource is a great place to start, as the device only has
a strict set of features that it allows to be shown.    ... but thats
another story :-)

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