Function to get a spatial data collection validation report. The function outputs
a data.frame binding all geometry validity reports, each one produced by
clgeo_GeometryReport
Usage
clgeo_CollectionReport(sp)
Value
an object of class data.frame with the following columns:
type eventual rgeos issue
valid geometry validity status (according to OGC specifications)
issue_type type of geometry issue
error_msg catched message when error raised about geometry
warning_msg catched message when warning raised about geometry