Cubic spline interpolation with slope at left end equal to zero?
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Hi, all,
I am doing a cubic spline interpolation with some data points. I want the slope at the left end to be zero and don't do anything to the slope at the right end(In the online example, both slope at both ends are forced to be zero). Does anyone know how to do this? Thank you.
Here is my data points:
if true
x = [0,0.152789493879,0.305539702586,0.458371723707,...
0.59356259,0.728929965449,0.864429595769,1];
y = [0,0.013083199999528,0.155041100006201,0.209241100004874,...
0.178395800001454,0.093888600007631,-0.033515100003569,-0.196524899991346];
end
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John D'Errico
le 25 Avr 2014
pp = slmengine(x,y,'knots',x,'leftslope',0,'result','pp');
There are many other things it can do, but this is a simple one. You can get the result in a pp form as I show, or in my own SLM format.
3 commentaires
John D'Errico
le 26 Avr 2014
Modifié(e) : John D'Errico
le 26 Avr 2014
No. Never put downloaded files in the MATLAB toolbox directories. This will cause problems. Instead, put the downloaded (unzipped) directory some place on your drive, then add that directory to your MATLAB search path. (Use pathtool for this, saving the new search path afterwards.)
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