Spatial SOM class
somspAn object of class somsp of length 0.
The somsp objects are created by somspa function and contain:
A summary data.table with the coordinates of each SOM node, the distances of objects
to their corresponding winning unit, the number of points of each node, as well as the median
latitude and longitude of each node coordinates and their standard deviation.
A Self-Organizing Map object (see also kohonen).
The sominp object used as input for the SOM, with an id number coressponding to
location and a node number to the classification group of SOM.
They can be plotted by plot and plot_ts functions or summarized by summary.
somspa
plot_ts