[Talk-ca] Wiki edits - Hydrography

Wed Mar 4 12:53:06 GMT 2009

Hi Sam,

I am not done yet with the chart.

I've checked with my co-workers about the "In geobase" statement of canvec features. It means that the same feature exist in a geobase product (in this case the NHN). I think we should first use the features in canvec. Later we could check what we can get from the NHN that was not in canvec. The NHN add a lot of feature types that will be of no use in OSM.

So this is why I have decided to add the mapping for these features.

The "N/A in OSM" mean that I was unable to find something appropriate in OSM map features wiki page : http://wiki.openstreetmap.org/wiki/Map_Features

Regards,

 Jean-Sebastien Moreau

Ressources naturelles Canada / Natural Resources Canada 
Centre d'information topographique / Centre for Topographic Information 
Gouvernement du Canada / Government of Canada 
2144-010 rue King Ouest, Sherbrooke  (Québec)  Canada  J1J 2E8 
2144-010 King West Street, Sherbrooke, Quebec, Canada  J1J 2E8 
téléphone / phone: 819.564.5600 ext. 252
télécopieur / facsimile: 819.564.5698 

email: jmoreau at usherbrooke.ca

________________________________

From: samvekemans at gmail.com [mailto:samvekemans at gmail.com] On Behalf Of Sam Vekemans
Sent: March 3, 2009 6:04 PM
To: Moreau, Jean-Sébastien; Talk-CA OpenStreetMap
Subject: Wiki edits - Hydrography

Hi thanks for all the edits :) 

1 - I like the new table edit, where 3 lines are merges into 1 ... that makes sence ... and saves in space making the chart smaller. ... 

When i go through the other charts again, i'll be fixing that.

2 - I saw you indicated that more of the Features are listed in NHN than i have indicated.

The source for my assumption that items were in geobase is from the CanVec PDF map features cart, where it lists weather or not the item is in fact IN geobase.

So my assumption is that the charts already were correct???

So to elevate this quarry, i propose that a link to the GeoBase NHN chart is made available (link to it), and in the NHN chart, these same map features get listed.

Anyway, when looking over the latest verion of canvec2osm, i see that those items that were put in the 'geobase' folder,.. are actually very good.  IMO.

I havent yet (but i should) dig into geobase and download for myself the NHN area of Niagra falls.. I can then make the same import script using the shp-to-osm Java script, and add in all of the database columns, with the appropriate source tags.

I would recommend my method, rather than using the geobase2osm script.   This is because for Hydrography, there is very little to no actual 'duplicates'.   So searching the area to find any duplicates is very easy going about it the manual way.

Also, i do have a bias about geobase2osm (that is that i do not understand HOW to actually run the script)  For me, running a java script is simple, because Java is already installed on windows machines when your on the net.  .. perl & python is VERY confusing :-)

However, like NHN, the canvec2osm features DO cover a WHOLE LOT of data.. so taking on the next phase is some extra work. ... which i think also needs to be done.

That said, i would propose that once im mostly done the charts and matching up all the features which is NOT in GeoBase, that i hold off on pushing for import.  Then I can start work on the GeoBaseNHN2osm.bat script

Has anyone already started it?

Oh ya, and 1 last point.

For where it says "Is in GeoBase - do not use - N/A in OSM" I would like to challenge each of these statements and explain WHY.... ie. 

39- Manmade hydrographic entity - (Entité hydrographique anthropique)

1450009

Image:Mf_node.png <http://wiki.openstreetmap.org/wiki/Image:Mf_node.png> way <http://wiki.openstreetmap.org/wiki/Image:Mf_way.png>  area <http://wiki.openstreetmap.org/wiki/Image:Mf_area.png> 

Wharf - ( Quai )

A structure built along or at an angle to the shore of navigable waters so that ships may lie alongside to receive and discharge cargo and passengers.

1450080;1450081;1450082

Is in GeoBase - do not use - N/A in OSM

A "warf" is certainly applicable in OSM, at some point boaters will be able to use OSM, as they can help fix the charts and map the oceans. ... :-)  (once boaters see the awesome power of community mapping, that is.)

Cheers,

Sam Vekemans

Across Canada Trails

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