der.m v1.0 (Nov, 2009)

Estimates first derivative of an array by using POLYFIT locally on each point ignoring NaNs!
1,3K Downloads
Aktualisiert 12. Nov 2009

Lizenz anzeigen

DER Estimates the derivative of an array X with respect to its argument T: dX/dT by evaluating the slope of a polynomial fit of elements "close" to each point. This "closeness" is controlled by an optional input called window width, in turn this controls the smoothness.

Syntax:
>> dXdT = der(X,DT);
where X is a time series and DT its sampling interval.
>> dXdT = der(X,T);
if T is not uniform.

Other optional inputs are:
- the window width (W)
- the polynomial fit degree (DEG)
- the padding (PAD) % to improve derivatives at edges

Besides, the error of the dXdT estimate may be obtained.

Enjoy it!
Bugs reports and comments will be very appreciated!

Zitieren als

Carlos Adrian Vargas Aguilera (2024). der.m v1.0 (Nov, 2009) (https://www.mathworks.com/matlabcentral/fileexchange/25818-der-m-v1-0-nov-2009), MATLAB Central File Exchange. Abgerufen.

Kompatibilität der MATLAB-Version
Erstellt mit R2008b
Kompatibel mit allen Versionen
Plattform-Kompatibilität
Windows macOS Linux
Kategorien
Mehr zu Descriptive Statistics finden Sie in Help Center und MATLAB Answers
Quellenangaben

Inspiriert von: Movingslope, nanderivative.m v2.1 (Jul 2009)

Community Treasure Hunt

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

Start Hunting!
Version Veröffentlicht Versionshinweise
1.0.0.0