Plotting Principal Stress in Ansys APDL

How to plot user defined result in APDL for (2^(P1) P1 =Principal Stress 

You can use the following logic to extract the result.

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Since 2^x = e^(x*ln(2)) you can do:

*vget,prin1,node,1,s,1

*vfact,1,log(2)

*vfun,udr,exp,prin1

*vput,udr,node,1,epel,xz

/graph,full

plns,epel,xz