[Gdal-dev] Re: Raster Soviet Topo Maps

[Matt Wilkie]

Hi Stephen, thank you for describing the approach you are using.

> Where can you get the Canadian NTS maps from? Are they a free download?

No not free, unfortunately. The product is called CanMatrix and can be 
purchased from Natural Resources Canada Centre for Topographic 
Information, 
http://www.cits.rncan.gc.ca/cit/servlet/CIT/site_id=01&page_id=1-005-002-003.html

On the bright side, if the resolution is reduced to 150dpi and the image 
size does not exceed 16,000,000px there are no restrictions on 
redistribution. Anyone who wants the sixty-six 1:250,000 maps which 
cover the Yukon Territory can drop me a line (250mb).

Although CanMatrix are 300dpi the quality in my opinion is not so hot. A 
test scan here in our office at the same resolution yielded much better 
results. However, they've already done it, the images are georeferenced, 
and our scanner bed is not big enough. :)


-- 
matt wilkie
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Geographic Information,
Information Management and Technology,
Yukon Department of Environment
10 Burns Road * Whitehorse, Yukon * Y1A 4Y9
867-667-8133 Tel * 867-393-7003 Fax
http://environmentyukon.gov.yk.ca/geomatics/
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