The VARIOGRAM Procedure

Syntax: VARIOGRAM Procedure

The following statements are available in PROC VARIOGRAM:

PROC VARIOGRAM options ;: BY variables ;; COMPUTE computation-options ;; COORDINATES coordinate-variables ;; DIRECTIONS directions-list ;; VAR analysis-variables-list ;

The COMPUTE and COORDINATES statements are required.

Table 95.1 outlines the options available in PROC VARIOGRAM classified by function.

Table 95.1 Options Available in the VARIOGRAM Procedure
Task	Statement	Option
Data Set Options
Specify input data set	PROC VARIOGRAM	DATA=
Suppress normal display of results	PROC VARIOGRAM	NOPRINT
Write autocorrelation weights information	PROC VARIOGRAM	OUTACWEIGHTS=
Write distance histogram information	PROC VARIOGRAM	OUTDISTANCE=
Write pairwise point information	PROC VARIOGRAM	OUTPAIR=
Write spatial continuity measures	PROC VARIOGRAM	OUTVAR=
Specify plot display and options	PROC VARIOGRAM	PLOTS
Declaring the Role of Variables
Specify variables to define analysis subgroups	BY
Specify the analysis variables	VAR
Specify the x, y coordinates in the DATA= data set	COORDINATES	XCOORD= YCOORD=
Controlling Continuity Measure Computations
Specify the confidence level	COMPUTE	ALPHA=
Specify the angle tolerances for angle classes	COMPUTE	ANGLETOL=
Compute autocorrelation statistics	COMPUTE	AUTOCORRELATION
Specify the bandwidths for angle classes	COMPUTE	BANDWIDTH=
Compute semivariance estimate variance	COMPUTE	CL
Specify the minimum distance that indicates any two distinct points are not collocated	COMPUTE	DEPSILON=
Specify the basic lag distance	COMPUTE	LAGDISTANCE=
Specify the tolerance around the lag distance	COMPUTE	LAGTOLERANCE=
Specify the maximum number of lags in computations	COMPUTE	MAXLAGS=
Specify the number of angle classes	COMPUTE	NDIRECTIONS=
Suppress computation of all continuity measures	COMPUTE	NOVARIOGRAM
Compute robust semivariance	COMPUTE	ROBUST
Controlling Distance Histogram Data Set
Specify the distance histogram data set	PROC VARIOGRAM	OUTDISTANCE=
Specify the number of histogram classes	COMPUTE	NHCLASSES=
Controlling Pairwise Information Data Set
Specify the pairwise data set	PROC VARIOGRAM	OUTPAIR=
Specify the maximum distance for the pairwise data set	COMPUTE	OUTPDISTANCE=

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