topic Time-Enabled Interpolation in ArcGIS Spatial Analyst Questions

Time-Enabled Interpolation

MatthewDondanville2 — Tue, 24 Jul 2012 15:20:51 GMT

I am trying to show interpolation of data over a few months. Is there an easy way to automate the interpolation IDW over each day of the month. My data is set up for time-enabled analysis but I do not know if you can interpolate for each day easily or at all.
Thanks
Matt

Re: Time-Enabled Interpolation

DanielVeale — Tue, 24 Jul 2012 16:17:59 GMT

Hi Matthew,
I am similarly trying to interpolate weather data over time. While I am still working out the finer points, I have found that you can use the 'model builder' tool, with an 'iterate features' iterator. Plug in your dataset as the input for the iterator, and then set it to select features by your date column. Then, still in model builder, use the interpolation tool (if you're doing weather, probably a Kriging interpolation is best) with the iterated output as the input to the interpolation. Run the model, and it should quickly (well, relatively quickly) produce your interpolations.

Also, you'll want to use %n% or possibly %value% at the end of your file name for interpolation output, otherwise model builder will just save over your previous files in each iteration.

Let me know if this works for you.

Best,
Dan V.
ArcInfo 10sp5 with extensions
Dept. of Political Science
Wayne State University
Detroit, MI

Re: Time-Enabled Interpolation

MatthewDondanville2 — Thu, 26 Jul 2012 16:58:54 GMT

[ATTACH=CONFIG]16425[/ATTACH]

Good idea. I started writing my model and for the life of me cannot get the sql to work to pull out each date of the weather data. I am using a shapefile with the data and the sql for the expression to save the select will not work. Any suggestions.
Matt