Natural neighbour for creating a surface from sample points

A conceptual explanation of how the Natural Neighbor tool in ArcGIS is used to interpolate values between sample points to estimate a surface.
Data used is from:
Burrough, P. A., & McDonnell, R. A. (1998). Principles of Geographical Information Systems. Oxford: Oxford University Press.
Created by Don Boyes, Dept. of Geography and Planning, University of Toronto

[@datdhcmrlchtdj137]

Great explanation. Clear and straightforward. Thanks!

[@Billy4you4]

This is great. Great simple explanation and visualization. Thank you.

[@DonBoyes]

Glad it was helpful!

[@joela7430]

Outstanding explanation

[@DonBoyes]

Wow, thanks! Glad it was helpful Joel.

[@alokmishra7103]

Great Video! Please make a video on GIS Models (Binary, Index, Regression, and Process). That will be helpful

[@GISforForestryandResearc-jq8he]

thanks so much for this video

[@DonBoyes]

You're very welcome!

[@rui4805]

awesome video

[@DonBoyes]

Thanks!

[@hatim010]

Hi, great video!
I wanted to know how the grid in 0:08 that encloses the points is chosen. Is it arbitrary? Because it does affect the weights later on.
Thanks!

[@DonBoyes]

they are called Thiessen polygons - you can learn more about them in this video: th-cam.com/video/E-s1p5yQWI0/w-d-xo.html

[@hatim010]

@@DonBoyes oh I wasn't clear enough. I know a little about this since I implemented it on python but what I wanted to know is how arbitrary is the rectangular box that encloses the entire voronoi diagram because the outer cells would be non-finite geometrical shapes.

[@DonBoyes]

@@hatim010 It's fairly arbitrary. Sometimes you might have some rationale for choosing a specific distance, but generally it is the same as defining any study area.

[@hatim010]

@@DonBoyes I see now, thanks a lot!

[@DonBoyes]

@@hatim010 You're welcome!

[@wiktor5725]

WItam to ja michalski: to nie to 0,1 dla pana