Draw vertical lines

ROOT
1

I need to draw two vertical lines, where :
l1: x1=x2=first intersection between the black line and the red TH1
y1= first intersection between the black line and the red TH1
y2= intersection between the vertical line and the blue TH1

the same for the second line but with the second intersection !
chi2.pdf (15.2 KB)

2

https://root.cern/doc/master/classTLine.html

https://root-forum.cern.ch/search?q=draw%20tline

3

@dastudillo Problem not solved yet !!

4

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