QGIS on an Android tablet

Running QGIS on an android phone worked just fine – but running QGIS on an Android tablet is going to be a lot more useful, with a larger screen. I summarised the steps of installing QGIS on a Galaxy Advance (I9070) in a previous post, under Gingerbread (2.3.6); since then, there have been some issues …

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Spatial operations: R vs. spatialite

R and sqlite / spatialite have very different performance for the same spatial operation – in this example, an intersection. The example here is overlaying a point on a set of polygons and returning the data (census tract number). A quick R function that solved the problem (using US census tract data from TIGER): library(maps) …

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