Experimental Semivariograms with Different Directions
Experimental semivariograms with different directions contains the following important terminology:
Tolerance：
Deciding if the nearby points in the bandwidth will become the search target or not.
Bandwidth：
A search width, deciding which pairs will be in the search width which is needed for drawing a semivariogram.
Active lag distance：
The lag distance means the desired range for processing variable calculation. The smallest lag distance is the shortest distance between any 2 points amongst all samples; the biggest lag distance is the longest distance between any 2 points amongst all samples.
Lag class distance interval:
Deciding how paired points are grouped as a lag class. Each point in variogram presents average semivariance in each single lag class.
The figure below is an example of 90-degree direction, 5-meter bandwidth, 45-degree tolerance, 5-meter of lag distance, and a search range of 45 degrees (90-45) to 135 degrees (90+45).
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