nanderivative.m v2.1 (Jul 2009)

版本 1.4.0.0 (3.9 KB) 作者: Carlos Adrian Vargas Aguilera
N-order derivative of vector data by interpolating nearby points, ignoring NaNs.
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更新时间 2009/7/29

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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)

引用格式

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. 检索时间: .

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创建方式 R2008b
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在 Help Center 和 MATLAB Answers 中查找有关 Interpolation 的更多信息
致谢

启发作品: der.m v1.0 (Nov, 2009)

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版本 已发布 发行说明
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