central_diff.m
Calculates numeric gradient using second-order difference formula for unevenly spaced data
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Note de l’éditeur : This file was selected as MATLAB Central Pick of the Week
The central_diff function calculates a numeric gradient using second-order accurate difference formula for evenly or unevenly spaced coordinate data. It operates in a similar fashion to the MATLAB function, gradient, except that it permits only one independent variable, x, and correctly handles unevenly spaced values of the x-coordinate data. Accuracy is increased at the ends relative to the MATLAB gradient function, which uses only first-order forward or backward differences at the ends, by instead using second-order forward difference at the left end and second-order backward difference at the right end.
Citation pour cette source
Robert Canfield (2026). central_diff.m (https://fr.mathworks.com/matlabcentral/fileexchange/12-central_diff-m), MATLAB Central File Exchange. Extrait(e) le .
Remerciements
A inspiré : central_diff2(y,deltat,d,a), DGradient
Informations générales
- Version 2.0.0.0 (4,12 ko)
Compatibilité avec les versions de MATLAB
- Compatible avec toutes les versions
Plateformes compatibles
- Windows
- macOS
- Linux
| Version | Publié le | Notes de version | Action |
|---|---|---|---|
| 2.0.0.0 | Second-order accurate forward and backward difference formulae are used now at the left and right ends, instead of first-order forward/backward differences at the ends. Logical operators & and | were replaced with && and ||, respectively. |
||
| 1.0.0.0 |
