Each section is independent—use only what you need.
[double]$v1=70.0+$r1*5.0; [double]$v2=1.0+$r2*0.1; [double]$v3=50.0+$r3*5.0 $sample = [double[]]@($v1,$v2,$v3) } elseif ($cluster -eq 1) { [double]$v1=85.0+$r1*5.0 ...