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determining the value of an x corresponding to specifec y from the graph

Asked by Nora Khaled on 25 Feb 2019
Latest activity Commented on by Nora Khaled on 25 Feb 2019
I have two vector that I used to plot the following.
q.png
the vector used to plot the y axis does not contain the value 0.5
so I want to determin the value of the x axis in the point I have selectud manually in the figure.
its the point that x would have if it was a continuous variable. but I do want to do this with code to use this value in some other computation.

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Answer by ANKUR KUMAR on 25 Feb 2019
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Use polyfit to fit a linear line along all data points. It gives you a linear equation in terms of x and y. Just insert the value of x or y to get the other variable.

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