I have a post up on the Google KML Developer Support group asking for help with a confusing bug. (Some polygons display as mangled on a Google Maps overlay, but not at all zoom levels and not in Google Earth,)
Monthly Archives: January 2011
Births with no other parent listed, 2007
This is another in an occasional series on 2007 Ontario birth data. The map shows the percentage of births where no father or other parent was listed.
The strongest pattern on the map is in west-end Toronto, following a strip running northwest along Black Creek Drive and the 400, where seven adjoining FSAs all have rates over 10%. Other pockets appear in the east downtown, the neighbourhoods around Dundas and Spadina, and along Morningside.
In Hamilton, rates are highest below the Mountain:
Other, smaller pockets are found in Welland, Oshawa and Orillia.
OpenHeatMap and Canadian ridings
Leo pointed just now to a new feature of OpenHeatMap which lets you create customized maps based on federal ridings as a base geography. I’ve been wrestling with translating the federal riding shapefile into manageable KML, so I was happy to test drive it.
Here is the percentage voting Conservative in Ontario in the last federal election:
There was some guesswork involved in uploading the .csv to create the map, due to some differences between Elections Canada naming conventions and the fields OpenHeatMap would accept. These seemed to be: 1) no French accents; 2) single hyphens, not the double hyphens Elections Canada uses; 3) no French names for ridings. So Niagara West–Glanbrook/Niagara-Ouest–Glanbrook becomes Niagara West-Glanbrook, and Ottawa–Orléans becomes Ottawa-Orleans.
That figured out, it went pretty smoothly, except that Brant isn’t included, not sure why, and Wellington-Halton Hills needs a hole in the middle for Guelph. Superimposing Guelph on Wellington-Halton Hills makes it look like a Conservative stronghold, which it isn’t.
As for colour naming conventions: a Tory map would be ‘blue,’ a Green map ‘green,’ an NDP map ‘red’ (which is orange) and a Liberal map ‘London,’ which is red.
Update: These issues have been fixed from their end.