Monthly Archives: April 2010

use and abuse of elevation contours

I’d never really looked at elevation in GIS data before, mainly because the data sets are big and I didn’t understand the format. I believe that in GeoGratis, NTDB and its successor CanVec provide elevation data, but those are vector … Continue reading

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Taking geotagged pictures with your Blackberry

Note: I’ve had reports that some carriers seem to disable GPS service within their service area. I’ve certainly seen slight differences as to how this works on different carriers. Most recent camera-equipped Blackberrys have a GPS built in. One of … Continue reading

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three norths to choose from

North is a slippery thing, a trickster. There are at least three norths to choose from: Magnetic north – where the compass needle points. Currently way in the northwest of Canada, it’s scooting rapidly towards Siberia. Come baaack, magnetic north! … Continue reading

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