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Kriging input with uncertainties

SteveJones1

I have a data set that I'd like to interpolate using Kriging. I know that ArcGIS can generate a variance raster alongside the interpolation result that shows the likely variance from the interpolation.

However, the z values in my input data have uncertainties of their own. Is there a way to have these uncertainties reflected in the output of the Kriging process? In other words, can the output variance raster express the variance that takes into account the uncertainty of the input data?

Cheers,
Steve.

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Eric6346

Do you have access to Geostatistical Analyst? It can only be done in that extension.

JenniferCorcoran

I have a similar question, but slightly different. I want to incorporate a bounding range of possible outputs in the interpolation per point. In other words, each point used in the kriging interpolation has a value and an acceptable range for modeled output in the interpolation. Can this be done?

CrystalMcClure

I have this exact same issue. How do you go about doing this in Geostatistical Analyst? (Yes I do have the extension)

Eric6346

Hi Crystal,

When there are uncertainties in the input data, we call that measurement error. Measurement error can be handled in several different ways, depending on your data.

Do each of your measured values have the same measurement error (ie, is the uncertainty the same for every value), or does the measurement error change from point to point?

CrystalMcClure

My measurement error changes from point to point.

Thanks for your help!

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