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What’s the horizontal error of the orthophoto

It depends on the photo resolution. Whatever the stated photo resolution in cm, positional accuracy is double that value. A 15 cm photo, for example, has positional horizontal accuracy of +/- 30 cm. T...

Is the date and time of the photo included?

The mosaics on MapCast and VuMAP, as well as the photo tiles on MapWarehouse are made up of several photos stitched together. To locate the date and time for a tile, it is necessary to look up the fli...

How is the data priced?

Most downloadable data is priced based on 500m x 500m tiles. For most orthophoto, the cost is $70 per 500m tile, and $150 per 1km tile, with progressive discounts applied automatically for orders grea...

How accurate is the elevation data?

In the 2002 Golden Horseshoe data set, the horizontal and vertical accuracy is +/- 40 cm, and +/- 80 cm for the 2002 Simcoe-Kawartha data set. This means that the difference between the true elevation...

What’s floodplain mapping?

Floodplain mapping defines the limits of the Regulatory Floodplain for a particular watershed, used for regulatory purposes. These maps are produced and maintained by the TRCA (Toronto and Region Cons...