Hello,
I need help about a problem.
I have a curve (random curve) and I don't have the equation to define the curve.
I need to extract N points from this curve.
How to do it?
MATLAB: How to extract points from a curve
curve fittingMATLAB
Related Solutions
If you don't have an equation of your dataset, then it will be simpler to use the following methods
spline()
rng(0)x = 1:10; % x-values
y = rand(size(x)); % random y-values
xv = linspace(min(x), max(x), 100); % more points on x-axis to make a smooth curve
yv = spline(x, y, xv); % interpolation using spline
plot(x, y, 'ro-', xv, yv, 'b-')
pchip()
rng(0)x = 1:10; % x-valuesy = rand(size(x)); % random y-valuesxv = linspace(min(x), max(x), 100); % more points on x-axis to make a smooth curveyv = pchip(x, y, xv); % interpolation using pchip
plot(x, y, 'ro-', xv, yv, 'b-')
makima()
rng(0)x = 1:10; % x-valuesy = rand(size(x)); % random y-valuesxv = linspace(min(x), max(x), 100); % more points on x-axis to make a smooth curveyv = makima(x, y, xv); % interpolation using makima
plot(x, y, 'ro-', xv, yv, 'b-')
Answer to my own question:
[points] = fnplt(spline,'r',2);
Best Answer