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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...

Why are there no PINs available at my site?

Only POLARIS PINs which have the highest spatial accuracy are made available through MapWarehouse. Whether you’re after just one parcel or need the whole city, PINs and ARNs for all of Ontario c...

The property lines don’t match the image below.

The orthophoto are generally spatially accurate to double the resolution value. Simply put, if a photo has resolution of 20cm, any point on the photo will be accurate within 40 cm of its true location...

The flood plain mapping I bought was 0 kb.

Floodplain mapping is available on an “as-is” basis with no routine update schedule. Sections of floodplain mapping will be updated from time to time as needed when major storm events caus...

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 the positional accuracy 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...