[Talk-ca] CanTopo Product Review

Sam Vekemans acrosscanadatrails at gmail.com
Tue Jun 29 03:02:50 BST 2010


Hi all,

Last week i got re-aquanted with the CanMatrix & CanTopo PDF maps,
that are available for us to trace from.

Note: Once all of the CanVec data has been imported  (manually
copying) we ask, whats next?

The CanTopo PDF maps are basically the newer version of CanMatrix.
Where there are GeoTIFFs created for the areas of most demand.
The CanMatrix pdfs were basically the scanned verson of the origional
paper maps.
Where CanTopo are the latest & Greatest.
Plus printed on a pritty map :)

The catelogue is familar to the CanVec set, but a few changes to note.

- the 'residential area' that we see in CanVec is now extrapolated
based on the GeoBase NRN, as it lists the road density. The more
concentration of little roads the bigger the grey area is.
So basically, we can use CanTopo to check the residential area and
make it bigger, based on this newer data.

For 'wooded_area' it now is from the Canadian Forestry Service
satelite imagery, were previously vineyards & Orchards were included.

-the map 'legend' is actually on the map, so you can basically look at
the map to understand what the symbols & Numbers are.

There is the map # (NTS tile) directly on the map, so it helps.
The map legend also has groovey pictographs of the symbols which make
it easier to understand.

The 'Tundra Ponds' and 'Palsa bog' and 'esker' are all listed, so
after some time using the maps, you'll recognize it.

Ideally, we want to have this entire mapset available on a single WMS layer.
Fortunatly, we have some awesome volunteers to make this happen. :)

James Dupont has offered to host samples of it, but since our volume
is big, we need a designated host.
James showed me the technical details (basically changing text & file names)

thats all for now,
Sam
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