Rpubs

Rpubs documents and sample data. My Rpubs webpage here.

• text mining with R

  Shows, how R can be used to access Elasticsearch database, retrieve documents and perform some basic text mining -- looking for highly correlated terms and perform clustering.

• trajectory similarity

  Example of how Dynamic Time Warping can be used to calculate simmilarity between spatial trajectories.

  Includes sample data.

• spatial network analysis

  How to transform SpatialLines to graph, which enables network analysis and to to find shortest path between two points.

• segmentation of spatial lines

  Functions to cut SpatialLines object into segments with even size and return them as a SpatialLines object.

• temporal distribution roadkills

  Example of a nice plot.

• k-shortest paths

  How to calculate k-shortest paths using variant of Yen's algorithm and igraph package

• calculate stationing

  Create simple Linear Referencing System - snap points to lines and calculate their stationing (position from the start)