Mathcad X-y ploy

[simplemath2]

Two difficulties I encountered when using mathcad in x-y plot :

1. I found no way to draw a vertical line say x=4.
2. I found no way to place two set of data in same graph (ie, two dataset with same x range, but different intervals)

Any ideas?

Thanks.

 

[GregLocock]

1) y[1=0 y[2=1 y@4

2) firstys,secondys@firstxs,secondxs

Cheers

Greg Locock


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[simplemath2]

Got 2nd one. Just realize key-in is so cool.
Did not get 1st one, but solved it by typing number directly into graph.
Thanks.