the code: data ex; do x=-5 to 5 by 0.2; do y=-5 to 5 by 0.2; z=x*y+y*y; output;end;end; proc g3d; plot y*x=z; run; the problem: error:procedure g3d no fand. I am using SAS University Edition. I am a Chinese college student and I am currently studying in China. thank you😃
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