I FIGURE IT OUT. WHEN PREPRAING THE ANNO DATA, WE HAVE TO CONSIDER 'Z' BESIDES X , AND Y, SINCE IT IS A 3-D GRAPH. data labels1; length text $3; retain xsys ysys '2' hsys '3' function 'label' position '2' style '"calibri"'; set sashelp.iris (rename=( PetalLength = y PetalWidth=x SepalLength = Z)); text = left(_N_); run;
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