Find x-value of cfit function.

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Leon Ellis
Leon Ellis 2022-5-22
评论： Leon Ellis 2022-5-22
Good day, I am trying to find the x-value of a cfit function with a known y-value. I am however struggling as the solve() function doesn't work on the cfit function. I have tried:
g=fit(t,w,'cubicinterp');
plot(g,t,w);
syms tx;
Point=w(1)*0.37;
eqn=Point==g(tx);
solve(eqn,tx);
Where t and w are both 49x1 matrices. I then got the functin g along with the datapoints and plotted them as follows:
If anyone can help me determine the x value for given y-value of the 'g' function help would be much appreciated! Thanks in advance!

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Walter Roberson
Walter Roberson 2022-5-22

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