Renamed helsinki_maps.R to helsinki_gis.R, and get_Helsinki_district_boundaries() to get_Helsinki_aluejakokartat()
Combined HKK Seutukartta and Piirijako into single function get_Helsinki_mapdata(), added also Rakennusrekisteridata into the same fuction.
Added XML to deps
Updated documentation and fixed character encoding for aluejakokartat.
Renamed functions
Added function for converting sp object to a data frame for ggplot2
Updated plot_shape(), seems to work but needs more testing!
Updated functions names in MML
Small updates
Updated importFrom -fields in visualization.R
Moved and renamed merge_spatial() and split_spatial()
Small updates
Small updates
Moved plot3d.R to inst/extras/, as it has some problems. Need to check this later!
Removed rgl from deps
Drafted example using spplot and ggplot2