[Gdal-dev] Canadian Topographic data (NTDB) now free!

Matt Wilkie matt.wilkie at gov.yk.ca
Wed Apr 4 13:28:50 EDT 2007

Hello Folks,  Good news!

"Important Notice -- Take note that the NTDB, CanImage and CanMatrix 
products will now be available at no cost only at the GeoGratis website."

Note that the free CanMatrix available on the same server is only the 
half-resolution version (160dpi). The 300dpi is still for sale only and 
restricted distribution. A tip though, if you want the 300dpi buy it 
from  http://www.softmaptech.com/ for a fraction of the cost from NRCAN 
(with collars clipped to boot). Rumour has it that in a year or two the 
restrictions will be lifted here too.

If you already know what you're looking for, skip the 20-clicks 
interface at http://www.geogratis.ca/geogratis/en/index.html and dive 
straight into ftp://ftp2.cits.rncan.gc.ca/pub/geogratis/bndt/

A command like this will grab all of the 250k 105 series in one go:
[windows, with cygwin tools in path; double up % to put in a batch file]

    wget --continue --recursive --level 2 

Then unpack:

    cd ftp2.cits.rncan.gc.ca\pub\geogratis\bndt\250k_shp_en\105\
    for /r %f in (*.zip) do unzip -d . %f

and mush together with OGR goodness (orders of magnitude faster than 
ArcGIS FeatureClassToXXX[*]):

    mkdir merged
    for %f in (*wetland*.shp) do (
       ( if not exist merged\wetlands.shp ogr2ogr -f "esri shapefile" 
merged\wetlands.shp %f ) else (
       ogr2ogr -f "esri shapefile" -update -append merged\wetlands.shp %f )

[*] http://www.uttara.ca/blog/gis/ipy-and-arcgisscripting


matt wilkie
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

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