How many elements are in your array? 27 looks like an incredibly wide window for your data. I would have used a width of 5 to 9 elements. Try that and see how it works out.
Question
I wanted to smooth a 3d line using the Savitzky-Golay filter, but for this example is seems to not work properly. Any ideas why, and how to fix it? % Savitzky–Golay filter (sgolayfilt) - smoothing individual axes windowWidth = 27; %Standard example values polynomialOrder = 3; xsg=sgolayfilt(points(:,1),polynomialOrder, windowWidth); ysg=sgolayfilt(points(:,2),polynomialOrder, windowWidth); zsg=sgolayfilt(points(:,3),polynomialOrder, windowWidth); xyzsg = [xsg,ysg,zsg]; clf() hold on plot3(points(:,1),points(:,2),points(:,3),'bo') plot3(xyzsg(:,1),xyzsg(:,2),xyzsg(:,3),'gx') hold off
Expert Answer
Neeta Dsouza
PhD Expert
Answered Aug 24, 2026
100% Run Guarantee
3-Hour Fast-Track Delivery
Need a Custom Version or Complete Simulation for This Problem?
Our 500+ PhD engineers build, debug, and optimize working MATLAB scripts and Simulink (.slx) models tailored to your exact assignment rubrics with zero plagiarism.
Tested on MATLAB R2024b / R2026a
Turnitin 0% Plagiarism Report
Free 7-Day Revisions Guarantee
Have a different question? Ask here
Related matlab Questions & Solutions
Browse All →
Explore similar technical troubleshooting questions and verified MATLAB solutions:
Ready-to-Run MATLAB & Simulink Projects
Browse All Projects →