how can i fit smooth curve through these points ?

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dear all
i have data point like below and i want to fit smooth curve (interpolate) through these point
x=0,0.0521848353989790,0.0650347106509774,0.0290795069951748,-0.0285693207263949
y=0,0.0247909821202880,0.0806454201568941,0.126123623558399,0.127238625523199
z=0,-0.00507868172844240,-0.0139159756869431,-0.0155072305512437,-0.00870218062387152
i use curve fitting toolbox for 2D data point and it works fine but when i want to use it with 3D data point i receive surface instead of curve
and i really appreciated if i could do this with cod instead of using tool box

Accepted Answer

John D'Errico
John D'Errico on 16 Feb 2018
Edited: John D'Errico on 16 Feb 2018
xyzint = interparc(100,x',y',z','spline');
plot3(x,y,z,'o')
grid on
box on
hold on
plot3(xyzint(:,1),xyzint(:,2),xyzint(:,3),'-r')
No "toolbox" required. But you will need interparc.
Could you write the code yourself? Of course. Interparc is just one function. Not even that complicated.

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