[Talk-ca] Geogratis vs. GeoBase

[Brent Fraser]

Sam Vekemans wrote:
> Well then if thats the case, then i think that we need to fix up the 
> wiki page to reflect that. .. and state that GeoBase is 'Natural 
> Resources Canada' which IS the GeoGratis website portal showing the 
> other sites. ... (Gosh this government is confusing ;) ..  aargh! ...
> 

Then I won't mention the CTIS site (http://www.cits.rncan.gc.ca/)!  (and no, there's no free data there (well almost none), only information)

Here's my [limited] understanding:

GeoGratis  - "data storage" web site for Federal NRCan Earth Sciences Sector free data distribution.
CTIS	   - The Federal agency responsible for topographic mapping (part of Earth Sciences Sector).
GeoBase	   - "data storage" web site by Federal/Prov/Terr agencies to distribute free topographic data
		For some reason (historical?, organizational?, disk space?) it does not include the Federal NTS map vector data (at Geogratis) , but it does include NTS digital elevation models.  Go figure.



> Or perhaps im not getting it. .. Can we explain;
> 
> 1 Where exactly the data in the Ibycus topo came from.  (if it was a big 
> set and split up, or how it was done)

Likely CanVec or it's predecessor, NTDB.

> 
> 2 If everything on the Ibycus Topo is now 'old'  ... how to we find the 
> new stuff??

CanVec

> 
> 3. What's this Atlas of Canada  
> <http://atlas.nrcan.gc.ca/site/english/maps/topo/map>thing? why cant i 
> download anything from that page?

A web mapping site (not a data download site) for viewing CanVec/NTDB.  Created before CanVec/NTDB was freed.

Best Regards,
Brent Fraser
GeoAnalytic Inc.