nanderivative.m v2.1 (Jul 2009)

Version 1.4.0.0 (3.94 KB) by Carlos Adrian Vargas Aguilera
N-order derivative of vector data by interpolating nearby points, ignoring NaNs.
0.0
(0)
2.5K Downloads
Updated 29 Jul 2009

View License

This program estimates the N-order (1rst derivative by default) derivative of a vector data Y (or the columns of a matrix) by interpolating, using INTERP1, two nearby points at each argument point X and then calculating their slope. It ignores NaNs elements.

>> dYdX = nanderivative(Y,X);

The N-order, the proximity of the interpolating points and the interpolation method (default 'spline') are optional input arguments.

Any comment will be very appreciated. (check the screenshot for an example)

Cite As

Carlos Adrian Vargas Aguilera (2024). nanderivative.m v2.1 (Jul 2009) (https://www.mathworks.com/matlabcentral/fileexchange/21187-nanderivative-m-v2-1-jul-2009), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2008b
Compatible with any release
Platform Compatibility
Windows macOS Linux
Categories
Find more on Interpolation in Help Center and MATLAB Answers
Acknowledgements

Inspired: der.m v1.0 (Nov, 2009)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Version Published Release Notes
1.4.0.0

v2.1 Fixed small bug with INTERP1.
1.3.0.0

Rewritten code. Mayor changes with inputs and link axes. Fixed bugs with floating point error, monotonically increasing/decreasing X and if N is not 1 do not outputs all other derivatives anymore.
1.0.0.0