-
Archives
- January 2013
- November 2012
- October 2012
- August 2012
- May 2012
- April 2012
- March 2012
- January 2012
- December 2011
- November 2011
- September 2011
- July 2011
- June 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
-
Meta
Tag Archives: perl
Georeferencing QGIS output rasters
Some of the design packages I rely on use very crude GIS facilities. In fact, all they can support is a georeferenced raster as a background image, so it’s more of a rough map than GIS. It helps if these … Continue reading
Ham Radio log to interactive OpenStreetMap
You might notice that there’s now a Ham Radio QSO Map lurking on the front page. Thanks to the WordPress OpenStreetMap plugin (which I’ve slightly abused before). Here’s a small piece of Perl which will take your ADIF log and … Continue reading
More radio amateur grid squares
After yesterday’s post, I went a bit nuts with working out the whole amateur radio grid locator thing (not that I’m currently likely to use it, though). I’d hoped to provide a shapefile of the entire world, but that would … Continue reading
Maidenhead Grid Locator, in Perl
Amateur radio operators sometimes use the Maidenhead Grid Locator Square system to identify location. Here’s my attempt at a translator, written in slightly squirrelly Perl: Grid square to lat/long and grid square shapefiles to follow.
Got a receiver inside my head – writing Spectrum Direct data as CSV
Industry Canada publishes the locations of all licensed radio spectrum users on Spectrum Direct. You can find all the transmitters/receivers near you by using its Geographical Area Search. And there are a lot near me: While Spectrum Direct’s a great … Continue reading
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
Toronto’s Human Centre, part 2: by neighbourhood
Beware throwaway comments; that way overanalysis lies. This was a challenge. Taking the 2006 neighbourhoods population into account, the human centre of Toronto is at 43.717955°N, 79.389828°W … … pretty close to the one I’ve already worked out by ward. … Continue reading
closer to ward maps: scraping the data
Toronto publishes its candidates here http://app.toronto.ca/vote2010/findByOffice.do?officeType=2&officeName=Councillor in a kind of tabular format. All I want to do is count the number of candidates per ward, remembering that some wards have no candidates yet. Being lazy, I’d far rather have another … Continue reading