[Talk-ca] Toronto aerial imagery

[Dan Putler]

NAD27 is North American Datum of 1927 (Geobase data actually uses the
North American Datum of 1983, on NAD83). Assuming the vector data is
available in shapefile format as well, run the shapefiles through
ogr2ogr in the GDAL/OGR library, and specify you want to convert to
WGS84 geographic.

Dan

On Mon, 2009-11-09 at 14:25 -0500, Andrew MacKinnon wrote:
> The recently released City of Toronto aerial imagery is on the
> following WMS server:
> 
> http://map.toronto.ca/servlet/com.esri.wms.Esrimap
> 
> This WMS server also includes all sorts of other data such as road
> centerlines, address data and property parcels, some of which is
> available in vector formats and some of which is not.
> 
> Trouble is, it uses a projection called "NAD27" (found that with a bit
> of googling) and it shows up a few metres off in JOSM. Any way to fix
> this?
> 
> Andrew
> 
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-- 
Dan Putler
Sauder School of Business
University of British Columbia