CODEWITHSUNDEEP
matlabplot
green
green

Reputation: 713

Plotting a best fit curves

Suppose I have a best fit equation for a set of data.How can I plot the data with marker and the best fit curve together. I know the command to include a data marker for a curve but this will make the curve pass through all the points if I type something like this

plot(x,polyval(p,x),'kx',x,polyval(p,x))

But this is not what I want since I am plotting a best fit curve. So I would like to know how exactly I can do that. Thanks in advance for all the helps. And between how can I add a polynomial that pass through all the point and the best fit curve as well as the data point with data marker on a same figure.

Upvotes: 1

Views: 488

Answers (1)

Dan
Dan

Reputation: 45752

Where is the data stored? lets say your datapoints are in x and y, then make a much finer xi so something like linspace(min(x), max(x), 1000) or xi = -100:0.01:100 or whatevers appropriate and then to plot

plot(x, y, 'k*', xi, polyval(p, xi))

Upvotes: 1

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