Documentation Example 2 for PROC SPP
/****************************************************************/
/* S A S S A M P L E L I B R A R Y */
/* */
/* NAME: SPPEX2 */
/* TITLE: Documentation Example 2 for PROC SPP */
/* PRODUCT: STAT */
/* SYSTEM: ALL */
/* KEYS: spatial analysis, spatial point patterns */
/* PROCS: SPP */
/* DATA: */
/* */
/* SUPPORT: prmoha */
/* REF: PROC SPP, EXAMPLE 2 */
/* MISC: */
/****************************************************************/
proc spp data=sashelp.bei;
process trees = (x,y /area=(0,0,1000,500) event=Trees);
trend grad = field(x,y,Gradient);
trend elev = field(x,y,Elevation);
covtest trees = grad elev;
run;