find and Calculate centroid within polygon either in ArcMap or in MapInfo

Question

How can i calculate single/multiple centroid(point) within polygon either in Arcmap or in MapInfo. Both object(point, polygon) are in defferent layer.

Pls suggest.....

Thanks

Answer 1

If you want to change your objects into points (the centroid) you can use this statement thru the MapBasic window in MapInfo Professional:

Update MY_TABLE Set OBJ = Centroid()

Do remember to do this on a copy of your data file as your original spatial objects will be replaced with the point!

Answer 2

In Arc Map you can use the "Feature to Point" tool under Data Management Tools to generate points at the Centroid of each feature. Make sure to leave the Inside option unchecked (some polygons may have centroids outside of the input polygon.

Hope This Helps

Answer 3

In Mapinfo you can add fields to a table, then use the update column feature to populate those fields with CentroidX(OBJ) and CentroidY(OBJ)