Article source: richwareham
In this talk (which was recorded as a dry run for a seminar) Rich presents a very brief introduction to the Python programming language from the point of view of someone wanting to perform data manipulation on geographic data. He outlines what a GIS is (essentially the meeting point between computers and map-making) and cover some issues to do with raster data on the Earth’s surface.
He covers the importance of choosing your sampling wisely, how to generate contoured heigh plots, faux 3d-shared relief maps, slope and aspect plots. Then there is a discussion about some simple de-noising strategies for freely accessible data and investigate a strange phenomenon in Oxfordshire.