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updated 13 days ago

Compressed Differentiation by Oren

The package differentiates symbolic multivariate functions fast and efficiently (jacobian, mixed derivatives, symmetric)

[derivs,uncomp]=compderivs(f,x,order)

test_compderivs.m

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updated 4 months ago

Adaptive smoothing and differentiation of a time series by Carlos J. Dias

Same as adsmoothdiff but with second derivative (time series, smoothing, differentiation)

ynew=adsmoothdiff2(dados,xnew,sdx,isdx,q,nmin)

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updated 7 months ago

Smooth Robust Differentiators by Jason Nicholson

numerical differentiation with noise suppression (differentiation, derivatives)

robustDiff(y, dt, N)

robustDiffOneSide(y, dt, N)

Contents.m

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updated 7 months ago

Fractional differentiation and integration by George Papazafeiropoulos

The n-th order derivative or integral of a function is calculated through Fourier series expansion. (gauss, legendre, fractional)

Cubic polynomial differintegral

Identity function differintegral

Tabular function differintegral

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updated 8 months ago

LOWESS differentiation by Robert

LOWESS smoothing and differentiation with NaN/Inf handling and different weight functions (lowess, smoothing, differentiation)

lowessDifferentiation( t , y , varargin )

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updated 1 year ago

FUNCTION PLOTTER IN ONE VARIABLE by RAHUL RANJAN

differential, integral, and plot of default or user defined mathematical function (calculus, differentiation, integration)

FUN_PLOTTER(varargin)

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updated 2 years ago

A function to get the 1st derivatives of a vector with two finite boundaries by Shao Ying Huang

This function gets the 1st derivatives of a vector V with two boundaries (first derivatives, 1st derivatives, differentiation)

get_VDx(V,delta_x,INDstart,INDend)

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updated 3 years ago

Adaptive Robust Numerical Differentiation by John D'Errico

Numerical derivative of an analytically supplied function, also gradient, Jacobian & Hessian (adaptive, differentiation, automatic)

derivest_demo

multivariable_calc_demo

derivest(fun,x0,varargin)

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updated 3 years ago

Savitzky-Golay smooth/differentiation filters and filter application by Diederick

Routine to generate Savitzky-Golay smoothing and differentiation filters and routine to apply these (filtering, differentiation, smoothing)

savitzkyGolay(x,n,dn,x0,W,flag)

y=savitzkyGolayFilt(x,N,DN,F,W,DIM)

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updated almost 4 years ago

diffxy by Darren Rowland

Second-order accurate numerical differentiation (N-dimensional) (derivative, differentiation, gradient)

demo_diffxy

diffxy(x,y,varargin)

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updated 5 years ago

Interactive Derivative by Tom O'Haver

Interactive Derivative for time-series signals. (chemistry, physics, signal processing)

DerivativeBackground(n,h)

DerivativeHeight(n,h)

DerivativeNoise(n,h)

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updated 5 years ago

Numerical Differentiation by Husam Aldahiyat

Performs single dimensional differentiation numerically. (differentiation, numerical, differences)

[d]=datnum(n,m)

numdiff()

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updated 7 years ago

Automatic Differentiation for Matlab by Martin Fink

This package provides automatic first and second derivatives for vector-functions and matrices. (differentiation, automatic differentia..., derivative)

example_AD

myA2D(x, varargin)

myAD(x, varargin)

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updated 7 years ago

Numerical differentiation based on wavelet transforms by Jianwen Luo

Numerical differentiation based on wavelet transforms (CWT and DWT) (time frequency, wavelets, wavelet)

dudx=derivative_cwt(u,wt_name,wt_scale,dx,trt_flag)

dudx=derivative_dwt(u,wt_name,wt_level,dx,trt_flag)

spline_scale_function(varargin)

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updated almost 9 years ago

Savitzky-Golay Smoothing and Differentiation Filter by Jianwen Luo

Savitzky-Golay smoothing and differentiation filter. (filter design, filter analysis, savitzkygolay)

fc=sgsdf(x,n,dn,x0,flag)

test_sgsdf.m

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updated almost 9 years ago

2-D Savitzky-Golay Smoothing and Differentiation Filter. by Jianwen Luo

2-D Savitzky-Golay smoothing and differentiation filters, including those for mixed partial ... (filter design, filter analysis, savitzkygolay)

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updated almost 9 years ago

2-D Savitzky-Golay Smoothing and Differentiation Filter by Jianwen Luo

Obtain the coefficients of the 2-D Savitzky-Golay smoothing and differentiation filter, ... (filter design, filter analysis, savitzkygolay)

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updated 9 years ago

Fast Chebyshev Differentiation by Greg von Winckel

Computes the numerical derivative on the Chebyshev grid. (approximation, interpolation, chebyshev)

Dx=fastdiff(x);

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updated 9 years ago

The Even-length Savitzky-Golay Filter by Jianwen Luo

The even-length Savitzky-Golay filter with a Gram polynomial approach. (filter design, filter analysis, savitzkygolay)

hnstm=sgsdf_even_gram_poly(n,s,t,m)

sgsdf_even_closed_form(n,s)

value=hinstm(i,n,s,t,m)

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updated 9 years ago

Adaptive-degree polynomial (Savitzky-Golay) filter for data differentiation by Jianwen Luo

Adaptive-degree polynomial filter (Savitzky-Golay Filter) for data differentiation (1st derivative). (filter design, filter analysis, savitzkygolay)

adpf_diff.m

Pkmi_Calculate.m

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updated almost 10 years ago

Smooth Differentiation by Jianwen Luo

A smoothed differentiation filter (digital differentiator). (filter design, filter analysis, smooth)

h=smooth_diff(n)

smooth_diff_demo.m

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updated almost 10 years ago

2-D Savitzky-Golay Differentiation Filter by Jianwen Luo

2-D Savitzky-Golay Differentiation Filter. (filter design, filter analysis, savitzkygolay filter)

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updated 10 years ago

Savitzky-Golay smoothing and differentiation filter (closed-formed solutions) by Jianwen Luo

explicit (closed-formed) solutions of the Savitzky-Golay smoothing and differentiation filter (filter design, filter analysis, savitzkygolay)

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updated 10 years ago

Savitzky-Golay Smoothing and Differentiation Filter by Jianwen Luo

Savitzky-Golay smoothing and differentiation filter calculated with the recursive properties ... (filter design, filter analysis, savitzkygolay)

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updated 10 years ago

Pseudospectral Differentiation on an Arbitrary Grid by Greg von Winckel

Numerically differentiates a function on an arbitrary grid. (differential equation..., pseudospectral, collocation)

D=collocD(x);

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updated 10 years ago

Legendre Collocation Differentiation by Greg von Winckel

Numerically differentiates functions sampled at the LGL nodes. (differential equation..., legendre, polynomials)

[x,D]=legDc(N);

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