Showing posts from October, 2016

3D mapping of Oldham landowners in 1829

I'm currently trying to make a 3D model of Dunn's map of Oldham in 1829.

Here are two versions:

It's easier to navigate on a touch screen. If you're on a standard PC then zoom in by pressing ctrl + shift and the up button.

Still work in progress as I haven't entered the whole of Dunn's index of landowners and occupants.

Quick summary of how to do it:
1. geo-reference the map in QGIS
2. draw the polygons of the buildings, remembering to add a column in attributes for number of floors. I've estimated this as I don't know the real heights, so for cottages I've put 2 floors, houses 3 floors and big buildings like factories and churches I've put 6 to make them stand out.
3. use the 'threejs' plugin in QGIS. This automatically converts the floor heights into the z co-ordinate - really easy. It makes it into a html fil…