Variography + spatial structure Flashcards
1
Q
Correlogram
A
shows semivariogram and covariance on 1 graph
shows correlation at different lags
2
Q
Correlation vs. variance
A
measure of similarity
measure of dissimilarity
3
Q
Crossplot
A
compares the values of all of the points in a dataset to other points within a specific distance
4
Q
Isotropy
A
equal affect in all directions
5
Q
Anisotropy
A
direction specific effect
6
Q
Nugget
A
shows semivariance at x = 0
7
Q
Sill
A
shows semivariance where it maxes or levels off
8
Q
Spatial lag
A
a specified distance which can change to show values at different distances
9
Q
Range
A
distance at which we believe spatial autocorrelation ceases to exist
lag distance (x) where semivariogram hits the sill
10
Q
Variogram
A
shows the variance at different lags
