[Talk-ca] Fwd: GeoBase vs CanVec

[Bégin, Daniel]

Hi Brendan,
 
"John" described the difference between Canvec and GeoBase pretty well!
 
Daniel

________________________________

From: talk-ca-bounces at openstreetmap.org [mailto:talk-ca-bounces at openstreetmap.org] On Behalf Of JOHN SMART
Sent: 20 août 2010 20:46
To: Brendan Morley; talk-ca at openstreetmap.org
Subject: Re: [Talk-ca] Fwd: GeoBase vs CanVec


G'Day Australian Mapper

Perhaps someone from Natural Resources Canada (the Federal mapping agency) could give a better answer, but my understanding is:

- CanVec originated from the NTDB (National Topographic Database) which is essentially the same data as is used for the (sometimes quite out of date) 1:50 000 scale National Topographic Series maps. That is all Federal data.

- GeoBase is an initiative which aims to reduce duplication of work / costs by having Provinces (equivalent to Aus. states) or other entities supply "best" data to the Feds.

Thus GeoBase would actually be an example of the left hand working in partnership with the right hand.

I believe CanVec is being updated with any better sources as they become available, e.g. National Roads Network (NRN) gets migrated into new editions of CanVec.

I believe there are many data themes that are in CanVec which are not in GeoBase, and presumably never will be in GeoBase unless the initiative is extended to include agreements for those themes.

If I have misunderstood anything I'd be delighted to be corrected.

Now, what is "CommonMap"? I had never heard of that until now. A quick web search gets me here:
http://commonmap.info/w/index.php/Main_Page

It looks to me like it is a very similar concept to OSM, apart from licensing perhaps. So it makes me wonder if we have a "left hand - right hand" situation there?

John



________________________________

From: Brendan Morley <morb.gis at beagle.com.au>
To: talk-ca at openstreetmap.org
Sent: Fri, August 20, 2010 9:11:10 PM
Subject: Re: [Talk-ca] Fwd: GeoBase vs CanVec

Also, I assume if I were to import GeoBase data into CommonMap, I should follow closely the rules implemented in http://svn.openstreetmap.org/applications/utils/import/geobase2osm/geobase2osm.py ?


Brendan

On 21/08/2010 9:52 AM, Brendan Morley wrote:
> Hello Canadian mappers,
> 
> Sam Vekemans suggested I ask the following here:
> 
> What is the relationship between CanVec data and GeoBase data?
> 
> To this layperson they seem to be two initiatives hosted by the same government that seem to have similar objectives.  Almost like the left hand not talking to the right hand.
> 
> Can anyone explain briefly the differences?  For example, it seems to me that GeoBase is "closer" to the data authors, and CanVec feeds from that, and CanVec concentrates on having complete coverage at particular scales (like 1:50k).
> Am I on the right track?
> Is there a government document that goes into detail?
> 
> My interest is to pick out the best bits to seed CommonMap with.  I'm looking for accuracy and timeliness.
> 
> 
> Brendan
> 
> _______________________________________________
> Talk-ca mailing list
> Talk-ca at openstreetmap.org
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