History and Today

I'll do some how to guides on my experiments in QGIS with historical maps soon, but here's an aide memoire of the tutorials I've used: Creating a heat map: http://www.qgistutorials.com/en/docs/creating_heatmaps.html Creating a contour map: http://www.qgistutorials.com/en/docs/working_with_terrain.html And to show that I'm just messing around and not doing this systematically, here's my failed experiment to warp geo-referenced maps onto a DEM (elevation) layer: Apparently north Manchester has a mountain range according to this...

I've been messing around with QGIS and old maps of Manchester. My approach at the moment is 'layer as many maps as I can find' and 'add as many different databases as I can' on the map and see what happens. I'll add some contextual and analytical information in another post. Here's a link to a simple map of Manchester (click on the expander on top right to layer a tile of Green's 1794 map on it), and the addresses of United Englishmen layered on it: http://protesthistory.org.uk/mcr1794trial.html There's a plugin in QGIS called QGIS2threejs which makes it easy to make elevations and buildings in 3D. So here's my slightly strange attempt to make Murray's Mills in Ancoats, together with a pub and some terraces, into 3D: Murray's Mills, Ancoats, in 3D Another plugin allows you to draw cartograms. Here's a gif comparing a straight map of Manchester police districts, coloured according to their population density in 183