R Maps – The CASA Blog Network

Mapping London’s Population Change 1801-2030

Posted on Wednesday 16 February 2011 by James Cheshire

Buried in the London Datastore are the population estimates for each of the London Boroughs between 2001 – 2030. They predict a declining population for most boroughs with the exception of a few to the east. I was surprised by this general decline and also the numbers involved- I expected larger changes from one year to …

Britain, Featured Maps, london, london datastore, map, opendata, population, R, R Maps, R spatial, R Spatial Tips, RColorBrewer, rspatialtips, rstats, visualisation

Exporting KML from R

Posted on Wednesday 19 January 2011 by James Cheshire

Google Earth has become a popular way of disseminating spatial data. KML is the data format required to do this. It is possible to load almost any type of spatial data format into R and export it as a KML file. In my experience R seems much quicker at doing this than many well-known GIS […]

KML, Map Making, R, R Maps, rstats

Opendata+R+Google = Easy Maps

Posted on Thursday 13 January 2011 by James Cheshire

The release of the R package “googleVis” has made the production of interactive maps through Google’s Chart Tools a simple task. Ignoring the some basic data manipulation the below map was produced with these two lines of code: library(googleVis) Geo=gvisGeoMap(Map, locationvar=”Country”, numvar=”Percentage”, options=list(height=350, dataMode=’regions’)) plot(Geo) This map, although simple to produce, is nontrivial as it […]

Google Chart Tools, Map Making, opendata, R, R Maps, Visualization