AnsweredAssumed Answered

Noisy Natural Neighbours

Question asked by BTLeslie on Jun 16, 2015
Latest reply on Jun 16, 2015 by slynch-esristaff

I get bad results when using the Natural Neighbors tool.  I think it may be a bug in 10.2.

 

I found an old workspace from 4 years ago that will have been created in arc9.3.

 

It contains a raster created using the Natural Neighbor tool - it looks good, nice and smooth - as shown below.

Original9_3.jpg

 

However if I re-run the analysis, now in 10.2, from the Results tab using the same data I get all these rogue pixels - as shown below.  I have struggled with this problem for a while and basically stopped using Natural Neighbors but I now think I have proof that it is a software fault and nothing to do with my data or settings.  Does anyone else have this problem or any possible solution that will fix the Natural Neighbors tool?

Current10_2.jpg

Although these errors are small, they do produce unwanted and unacceptable hillocks when the raster is converted into a surface.

(images adjusted in photoshop to increase constast)

Outcomes