Fix rgeos::gIsValid failures in SpatialPolygons

Source: R/postProcess.R

This uses raster::buffer(..., width = 0) internally, which fixes some failures to rgeos::gIsValid

# S3 method for SpatialPolygons
fixErrors(x, objectName = NULL,
  attemptErrorFixes = TRUE, useCache = getOption("reproducible.useCache",
  FALSE), ...)

Arguments

x

A SpatialPolygons object
objectName

Optional. This is only for messaging; if provided, then messages relayed to user will mention this.
attemptErrorFixes

Will attempt to fix known errors. Currently only some failures for SpatialPolygons* are attempted. Notably with raster::buffer(..., width = 0). Default TRUE, though this may not be the right action for all cases.
useCache

Logical, default getOption("reproducible.useCache", FALSE), whether Cache is used on the internal raster::buffer command.
...

Passed to methods. None currently implemented.