I created some polygons using R and to get a better visualization and some other stuff I need to import those into ArcMap. However, when I imported the polygons I realized there are some holes in some of the polygons,not all. Then I thought there could be a problem with the calculation but when I checked R, there's no problem with the polygons. I'm completely lost about what's wrong. This is my R polygons:
and this is what I got from ArcMap:
Can you help me understand what's wrong with them?
gIsValid(your_polygon, byid=TRUE)
(from maptools) on the polygon feature in R.