Tag Archives: proj

Not really getting the Azimuthal Equidistant projection right

Posted on 2011/12/11 by scruss

All I really wanted to do is make a map like this: This is an Azimuthal Equidistant projection, with me at the centre (of course) and the rest of the world spread out in a fan by distance and bearing. … Continue reading →

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proj.4 init annoyances: it’s all apple’s fault

Posted on 2010/08/08 by scruss

I was going to write a rant about how Ubuntu sets up proj.4 init files incorrectly, then I found that the problem actually lies with OS X. OS X is unusual for a Unix variant, as it uses a case-insensitive … Continue reading →

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three norths to choose from

Posted on 2010/04/05 by scruss

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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current tools of my trade

Posted on 2010/03/23 by scruss

Mark asked: What kind of GIS software are you using? Well, since you asked:- SpatiaLite: spatial awesome built on SQLite. I love it because I don’t need to play DBA. QGIS: for maps ogr: for file format futzing proj: for … Continue reading →

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a simple geocoder for toronto

Posted on 2010/02/20 by scruss

I’m going to use SpatiaLite and the Toronto One Address Repository to try some simple geocoding. That is, given an address, spit out the real-world map coordinates. As it happens, the way the Toronto data is structured it doesn’t really … Continue reading →

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