Is it possible to plot line from one subplot to another in r2012a?

I need to extend the green lines from one subplot to another subplot

[Walter Roberson]

Duplicates http://uk.mathworks.com/matlabcentral/answers/270270-is-it-possible-to-extend-a-line-which-is-plotted-in-one-subplot-to-another-subplot-in-same-figure