topic get the centroid of multiple grid centroids in Geoprocessing Questions

get the centroid of multiple grid centroids

ElaineKuo — Sat, 14 May 2011 12:18:19 GMT

Dear list,

I have multiple bird distribution maps in the form of ArcGIS shape files.
The distribution maps are composed of grid polygons. (1 grid= 100 km* 100km)

Now I want to obtain the centroids of each bird distribution maps.
In the first step, I use "Feature to point" to retrieve centroid of each grid within the polygons.
Then, please kindly advise if any method is available to get the centroid of the grid centroid of each polygons.
Thank you in advance.

Elaine

Re: get the centroid of multiple grid centroids

curtvprice — Sun, 15 May 2011 20:29:27 GMT

I have multiple bird distribution maps in the form of ArcGIS shape files.
The distribution maps are composed of grid polygons. (1 grid= 100 km* 100km)

Now I want to obtain the centroids of each bird distribution maps.

You may want to try a dissolve operation first - use the option to merge separate polygons into multipart polygons. Each Multipart should generate only one aggregated centroid when you run Feature To Point.