[Talk-ca] CanVec Import /Datum

[Bégin, Daniel]

Hi all,

Last weekend was held a Canvec Import mapping party in Sherbrooke.  One of the participant asked if there were significant differences between NAD83 (Canvec and GeoBase datum) and WGS84 (Osm datum) e.g.: are converted Canvec file would fit the Osm data?

As nobody known if there was a correction of some type within the java conversion application, I have checked to make sure we were not in trouble.

Here is the answer: 
Even if there is no datum correction done when converting Canvec to Osm,  the largest difference between both datum in Canada is 1.5 meter.

http://www.geod.nrcan.gc.ca/faq_e.php#23 

So, go ahead, the result is ok!

Daniel