topic Re: Issues with the K-Bessel model in ArcGIS GeoStatistical Analyst Questions

Issues with the K-Bessel model

BrianCarson4 — Thu, 30 May 2013 23:18:00 GMT

I'm trying to use the Geostatistical Wizard to interpolate some count data. However, every time I get the number of lags small enough to eliminate the negative covariences and change the model type the wizard will run for a while with the software eventually
crashing. Is this something that may just be operator error?

Thanks.

Re: Issues with the K-Bessel model

SteveLynch — Fri, 31 May 2013 15:28:18 GMT

Brian

I'm sorry to hear this.

Some questions:
- are you doing Areal Interpolation and do you have Service Pack 1 installed?
- what Operating system are you using?

Thanks
Steve

Re: Issues with the K-Bessel model

BrianCarson4 — Fri, 31 May 2013 16:06:24 GMT

I am doing Areal Interpolation. Running 10.1 SP1 on Windows 7 Enterprise 64-bit. I finally got it to run once without crashing early this morning. However, it took almost 3 hours when switching from spherical to K-Bessel and when I tried to adjust the lag size to make the model fit better I ran into the same issues I was having before.

Re: Issues with the K-Bessel model

SteveLynch — Fri, 31 May 2013 16:19:22 GMT

can you send me the data (slynch@esri.com) and the steps that you are following?

Re: Issues with the K-Bessel model

SteveLynch — Mon, 10 Jun 2013 15:07:48 GMT

I�??m afraid to say that I am unable to reproduce this.

The only thing that we can think could happen is the following; many Geostat methods are multi-threaded (http://resources.arcgis.com/en/help/main/10.1/index.html#/Parallel_processing_with_multiple_CPUs/0031000000q5000000/) and what could be happening is that one thread is still calculating and a parameter is changed which means that that thread should be killed and a new one fired off.

One way, and I know that K Bessel takes a long time to process, is to wait for the model to finish updating before a parameter is changed.