Once again we pose the question of how to determine the optimal location for additional sampling. One answer might be to focus on locations in the site where the confidence in our prediction is low.
Change the "Data component" to Confidence-VOC as shown below.
When you do, you should see the surface in the Viewer colored like a bad case of chicken pox. Actually, each red spot is one of the sampling locations. These locations are areas of high confidence (100%), since we know the concentration at those places. Everywhere else in the domain, we are estimating the values.
However, confidence alone is not the best measure of where to sample because it does not take concentration into consideration.
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