Difference between revisions of "User:Josiah425:TISEAN Package:Table of functions"

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! Program Name !! Program Description !! Corresponding Octave Function !! Lanuguage of Origin !! How to port !! Status
 
! Program Name !! Program Description !! Corresponding Octave Function !! Lanuguage of Origin !! How to port !! Status
 
|-
 
|-
| arima-model || Fit and possibly iterate an ARIMA model || generalizes TSA arma functions || This is a c-file that can be wrapped in C++/mfile/octfile code ||  ||
+
| arima-model || Fit and possibly iterate an ARIMA model || generalizes TSA arma functions || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|ar-model || Fit and possibly iterate an Autoregessive model || 'aar' in TSA || C; see also: aarmam, adim, amarma, mvaar from TSA ||  ||
+
|ar-model || Fit and possibly iterate an Autoregessive model || 'aar' in TSA; see also: aarmam, adim, amarma, mvaar from TSA || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|ar-run || Iterate an Autoregessive model || Same as above || FORTRAN || ||
+
|ar-run || Iterate an Autoregessive model || Same as above || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
 
|av-d2 || Simply smooth output of d2 || Can be implemented with filter in core || C ||  ||
 
|av-d2 || Simply smooth output of d2 || Can be implemented with filter in core || C ||  ||
 
|-
 
|-
|boxcount || Renyi Entopies of Qth order || None in GNU Octave (maybe in info-theory but it is not worth the pain) || C || ||
+
|boxcount || Renyi Entopies of Qth order || None in GNU Octave (maybe in info-theory but it is not worth the pain) || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|c1 || Fixed mass estimation of D1 || None in GNU Octave || FORTRAN || ||
+
|c1 || Fixed mass estimation of D1 || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|c2d || Get local slopes from correlation integral || None in GNU Octave || FORTRAN || ||
+
|c2d || Get local slopes from correlation integral || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|c2g || Gaussian kernel of C2 || None in GNU Octave || FORTRAN || ||
+
|c2g || Gaussian kernel of C2 || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|c2t || Takens estimator of D2 || None in GNU Octave || FORTRAN || ||
+
|c2t || Takens estimator of D2 || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|choose || Choose rows and/or columns from a data file || Does not need to be ported || ------
+
|choose || Choose rows and/or columns from a data file || Does not need to be ported || FORTRAN || ----- ||
|| ||
 
 
|-
 
|-
|compare || Compares two data sets || Does not need to be ported || FORTRAN || ||
+
|compare || Compares two data sets || Does not need to be ported || FORTRAN || ------ ||
 
|-
 
|-
|corr, autocorr || Autocorrelation function || xcorr in signal || corr -C, autocorr (faster according to documentation) - FORTRAN || ||
+
|corr, autocorr || Autocorrelation function || xcorr in signal || corr -C, autocorr (faster according to documentation) - FORTRAN || ------- ||
 
|-
 
|-
|d2 || Correlation dimension d2 || None in GNU Octave  || c || ||
+
|d2 || Correlation dimension d2 || None in GNU Octave  || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|delay || Creates delay embedding || None in GNU Octave (easy to implement in Octave but not worth the effort) || C || ||
+
|delay || Creates delay embedding || None in GNU Octave (easy to implement in Octave but not worth the effort) || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|endtoend || Determine end-to-end mismatch || None in GNU Octave || FORTRAN || ||
+
|endtoend || Determine end-to-end mismatch || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|events || Interval/event conversion || None in GNU Octave || FORTRAN to be implemented as mfile ||  ||
+
|events || Interval/event conversion || None in GNU Octave || FORTRAN || To be reimplemented as m-file ||
 
|-
 
|-
 
|extrema || Determine the extrema of a time series || findpeaks in signal (but maybe is just easier to port) || C ||  ||
 
|extrema || Determine the extrema of a time series || findpeaks in signal (but maybe is just easier to port) || C ||  ||
 
|-
 
|-
|false_nearest || The false nearest neighbor algorithm || None in GNU Octave || C || ||
+
|false_nearest || The false nearest neighbor algorithm || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|ghkss || Nonlinear noise reduction || None in GNU Octave || C || ||
+
|ghkss || Nonlinear noise reduction || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|henon || Create a Hénon time series || None in GNU Octave || To m-file; already ported ||  ||
+
|henon || Create a Hénon time series || None in GNU Octave || FORTRAN || To be reimplemented as m-file || Done
 
|-
 
|-
 
|histogram || Creates histograms || hist in core  || C  ||  ||
 
|histogram || Creates histograms || hist in core  || C  ||  ||
 
|-
 
|-
|ikeda || Create an Ikeda time series || None in GNU Octave || FORTRAN to be reimplemented as mfile ||  ||
+
|ikeda || Create an Ikeda time series || None in GNU Octave || FORTRAN || To be reimplemented as mfile ||
 
|-
 
|-
|intervals || Event/intervcal conversion || Might exist under different name || FORTRAN to be reimplemented as mfile ||  ||
+
|intervals || Event/intervcal conversion || Might exist under different name || FORTRAN || To be reimplemented as mfile ||
 
|-
 
|-
|lazy || Simple nonlinear noise reduction || None in GNU Octave || FORTRAN || ||
+
|lazy || Simple nonlinear noise reduction || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lfo-ar || Locally first order model vs. global AR model (old ll-ar) || None in GNU Octave || C || ||
+
|lfo-ar || Locally first order model vs. global AR model (old ll-ar) || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lfo-run || Iterate a locally first order model (old nstep) || None in GNU Octave || C || ||
+
|lfo-run || Iterate a locally first order model (old nstep) || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lfo-test || Test a locally first order model (old onestep) || None in GNU Octave || C || ||
+
|lfo-test || Test a locally first order model (old onestep) || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lorenz || Create a Lorenz time series || None in GNU Octave || FORTRAN || ||
+
|lorenz || Create a Lorenz time series || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|low121 || Time domain low pass filter || There are lowpass filters in Octave: buttap, cheb1ap, cheb2ap, ellipap, sftrans, but I don't think they perform this task || C, might be ok to implement as mfile ||  ||
+
|low121 || Time domain low pass filter || There are lowpass filters in Octave: buttap, cheb1ap, cheb2ap, ellipap, sftrans, but I don't think they perform this task || C || Reimplement as mfile ||
 
|-
 
|-
|lyap_k || Maximal Lyapunov exponent with the Kantz algorithm || None in GNU Octave || C || ||
+
|lyap_k || Maximal Lyapunov exponent with the Kantz algorithm || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lyap_r || Maximal Lyapunov exponent with the Rosenstein algorithm || None in GNU Octave || C || ||
+
|lyap_r || Maximal Lyapunov exponent with the Rosenstein algorithm || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lyap_spec || Full spectrum of Lyapunov exponents || None in GNU Octave || C || ||
+
|lyap_spec || Full spectrum of Lyapunov exponents || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lzo-gm || Locally zeroth order model vs. global mean || None in GNU Octave || C || ||
+
|lzo-gm || Locally zeroth order model vs. global mean || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lzo-run || Iterate a locally zeroth order model || None in GNU Octave || C || ||
+
|lzo-run || Iterate a locally zeroth order model || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|lzo-test || Test a locally zeroth order model (old zeroth) || None in GNU Octave || C || ||
+
|lzo-test || Test a locally zeroth order model (old zeroth) || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|makenoise || Produce noise || Rand exists || Should be implemented as mfile using Octave rand functions || ||
+
|makenoise || Produce noise || Rand exists || Should be implemented as mfile using Octave rand functions || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|mem_spec || Power spectrum using the maximum entropy principle || None in GNU Octave || C || ||
+
|mem_spec || Power spectrum using the maximum entropy principle || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|mutual || Estimate the mutual information || None in GNU Octave || C || ||
+
|mutual || Estimate the mutual information || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|notch || Notch filter || pei_tseng_notch, needs to be verified || FORTRAN || ||
+
|notch || Notch filter || pei_tseng_notch, needs to be verified || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|nstat_z || Nonstationarity testing via cross-prediction || None in GNU Octave || C ||  ||
+
|nstat_z || Nonstationarity testing via cross-prediction || None in GNU Octave || C ||wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|pca, pc || Principle component analysis || 'pcacov' if likely the equivalent || pca - C, pc - FORTRAN ||  ||
+
|pca, pc || Principle component analysis || 'pcacov' if likely the equivalent; pricomp in statistics || pca - C, pc - FORTRAN ||  ||
 
|-
 
|-
|poincare || Create Poincaré sections || None in GNU Octave || C || ||
+
|poincare || Create Poincaré sections || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|polyback || Fit a polynomial model (backward elimination) || polyfit, detrend, wpolyfit || I do not know if they work the same way, but it does seem so, written in C ||  ||
+
|polyback || Fit a polynomial model (backward elimination) || polyfit, detrend, wpolyfit || C ||  ||
 
|-
 
|-
|polynom || Fit a polynomial model || same as above || same as above ||  ||
+
|polynom || Fit a polynomial model || same as above || C ||  ||
 
|-
 
|-
|polynomp || Fit a polynomial model (reads terms to fit from file) || same as above  || same as above ||  ||
+
|polynomp || Fit a polynomial model (reads terms to fit from file) || same as above  || C ||  ||
 
|-
 
|-
|polypar || Creates parameter file for polynomp || same as above || same as above ||  ||
+
|polypar || Creates parameter file for polynomp || same as above || C ||  ||
 
|-
 
|-
|predict || Forecast discriminating statistics for surrogates || None in GNU Octave || FORTRAN || ||
+
|predict || Forecast discriminating statistics for surrogates || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|randomize || General constraint randomization (surrogates) || There are random function, but I don't think this one exists || FORTRAN || ||
+
|randomize || General constraint randomization (surrogates) || There are random function, but I don't think this one exists || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|randomize_spikeauto_exp_random || Surrogate data preserving event time autocorrelations || Same as above  || Same as above || ||
+
|randomize_spikeauto_exp_random || Surrogate data preserving event time autocorrelations || Same as above  || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|randomize_spikespec_exp_event || Surrogate data preserving event time power spectrum || Same as above || Same as above || ||
+
|randomize_spikespec_exp_event || Surrogate data preserving event time power spectrum || Same as above || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|rbf || Radial basis functions fit || None in GNU Octave || C || ||
+
|rbf || Radial basis functions fit || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|recurr || Creates a recurrence plot || None in GNU Octave || C || ||
+
|recurr || Creates a recurrence plot || None in GNU Octave || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|resample || Resamples data || There is 'resample' in Octave, but I believe it does something else || C || ||
+
|resample || Resamples data || There is 'resample' in Octave, but I believe it does something else || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|rescale || Rescale data set || This should be in Octave, cannot find... || C || ||
+
|rescale || Rescale data set || This should be in Octave, cannot find... || C || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|rms || Rescale data set and get mean, variance and data interval || This should be in Octave, cannot find...  || FORTRNAN || ||
+
|rms || Rescale data set and get mean, variance and data interval || This should be in Octave, cannot find...  || FORTRNAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
 
|sav_gol || Savitzky-Golay filter || sgolayfilt in signal || C ||  ||
 
|sav_gol || Savitzky-Golay filter || sgolayfilt in signal || C ||  ||
 
|-
 
|-
|spectrum || Power spectrum using FFT || bispec from tsa? || FORTRAN ||  ||
+
|spectrum || Power spectrum using FFT || bispec from tsa?; hist (fft (.)) || FORTRAN ||  ||
 
|-
 
|-
 
|spikeauto || Autocorrelation function of event times || similar to above || FORTRAN ||  ||
 
|spikeauto || Autocorrelation function of event times || similar to above || FORTRAN ||  ||
Line 127: Line 126:
 
|spikespec || Power spectrum of event times || ar_psd, cpsd is the closest but I do not think they are the same || FORTRAN ||  ||
 
|spikespec || Power spectrum of event times || ar_psd, cpsd is the closest but I do not think they are the same || FORTRAN ||  ||
 
|-
 
|-
|stp || Creates a space-time separation plot || None in GNU Octave || FORTRAN || ||
+
|stp || Creates a space-time separation plot || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|surrogates || Creates surrogate data || None in GNU Octave || FORTRAN || ||
+
|surrogates || Creates surrogate data || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|timerev || Time reversal discrimating statistics for surrogates || None in GNU Octave || FORTRAN, to be implemented as mfile ||  ||
+
|timerev || Time reversal discrimating statistics for surrogates || None in GNU Octave || FORTRAN || To be reimplemented as mfile ||
 
|-
 
|-
|upo || Finds unstable periodic orbits and estimates their stability || No corresponding function in Octave || FORTRAN || ||
+
|upo || Finds unstable periodic orbits and estimates their stability || None in GNU Octave || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|upoembed || Takes the output of upo and create data files out of it || Same as above || Same as above || ||
+
|upoembed || Takes the output of upo and create data files out of it || None in GNU Octave || FORTAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|wiener1, wiener2 || Wiener filter || Wiener process exists, might be similar || FORTRAN || ||
+
|wiener1, wiener2 || Wiener filter || Wiener process exists, might be similar || FORTRAN || wrapped in C++/mfile/octfile code ||
 
|-
 
|-
|xc2 || Cross-correlation integral || xcorr2 || Needs to be verified that works the same way ||  ||
+
|xc2 || Cross-correlation integral || xcorr2 - Needs to be verified that works the same way || FORTRAN ||  ||
 
|-
 
|-
|xcor || Cross-correlations || xcorr || Needs to be verified that works same way ||  ||
+
|xcor || Cross-correlations || xcorr - Needs to be verified that works same way || C||  ||
 
|-
 
|-
 
|xrecur || Cross-recurrence Plot || xcorr, or xcorr2 or another function might cover this || C ||  ||
 
|xrecur || Cross-recurrence Plot || xcorr, or xcorr2 or another function might cover this || C ||  ||

Revision as of 09:11, 6 April 2015

Table of functions

In reference to the TISEAN library alphabetical order of programs which is located here.

The choice whether a program exist in Octave is based only on comparing package/octave documentation with the TISEAN documentation. As of now I have not compared any code, nor checked if any sample data gives the same results from both functions (the octave ones and the TISEAN ones).

Program Name Program Description Corresponding Octave Function Lanuguage of Origin How to port Status
arima-model Fit and possibly iterate an ARIMA model generalizes TSA arma functions C wrapped in C++/mfile/octfile code
ar-model Fit and possibly iterate an Autoregessive model 'aar' in TSA; see also: aarmam, adim, amarma, mvaar from TSA C wrapped in C++/mfile/octfile code
ar-run Iterate an Autoregessive model Same as above FORTRAN wrapped in C++/mfile/octfile code
av-d2 Simply smooth output of d2 Can be implemented with filter in core C
boxcount Renyi Entopies of Qth order None in GNU Octave (maybe in info-theory but it is not worth the pain) C wrapped in C++/mfile/octfile code
c1 Fixed mass estimation of D1 None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
c2d Get local slopes from correlation integral None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
c2g Gaussian kernel of C2 None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
c2t Takens estimator of D2 None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
choose Choose rows and/or columns from a data file Does not need to be ported FORTRAN -----
compare Compares two data sets Does not need to be ported FORTRAN ------
corr, autocorr Autocorrelation function xcorr in signal corr -C, autocorr (faster according to documentation) - FORTRAN -------
d2 Correlation dimension d2 None in GNU Octave C wrapped in C++/mfile/octfile code
delay Creates delay embedding None in GNU Octave (easy to implement in Octave but not worth the effort) C wrapped in C++/mfile/octfile code
endtoend Determine end-to-end mismatch None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
events Interval/event conversion None in GNU Octave FORTRAN To be reimplemented as m-file
extrema Determine the extrema of a time series findpeaks in signal (but maybe is just easier to port) C
false_nearest The false nearest neighbor algorithm None in GNU Octave C wrapped in C++/mfile/octfile code
ghkss Nonlinear noise reduction None in GNU Octave C wrapped in C++/mfile/octfile code
henon Create a Hénon time series None in GNU Octave FORTRAN To be reimplemented as m-file Done
histogram Creates histograms hist in core C
ikeda Create an Ikeda time series None in GNU Octave FORTRAN To be reimplemented as mfile
intervals Event/intervcal conversion Might exist under different name FORTRAN To be reimplemented as mfile
lazy Simple nonlinear noise reduction None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
lfo-ar Locally first order model vs. global AR model (old ll-ar) None in GNU Octave C wrapped in C++/mfile/octfile code
lfo-run Iterate a locally first order model (old nstep) None in GNU Octave C wrapped in C++/mfile/octfile code
lfo-test Test a locally first order model (old onestep) None in GNU Octave C wrapped in C++/mfile/octfile code
lorenz Create a Lorenz time series None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
low121 Time domain low pass filter There are lowpass filters in Octave: buttap, cheb1ap, cheb2ap, ellipap, sftrans, but I don't think they perform this task C Reimplement as mfile
lyap_k Maximal Lyapunov exponent with the Kantz algorithm None in GNU Octave C wrapped in C++/mfile/octfile code
lyap_r Maximal Lyapunov exponent with the Rosenstein algorithm None in GNU Octave C wrapped in C++/mfile/octfile code
lyap_spec Full spectrum of Lyapunov exponents None in GNU Octave C wrapped in C++/mfile/octfile code
lzo-gm Locally zeroth order model vs. global mean None in GNU Octave C wrapped in C++/mfile/octfile code
lzo-run Iterate a locally zeroth order model None in GNU Octave C wrapped in C++/mfile/octfile code
lzo-test Test a locally zeroth order model (old zeroth) None in GNU Octave C wrapped in C++/mfile/octfile code
makenoise Produce noise Rand exists Should be implemented as mfile using Octave rand functions wrapped in C++/mfile/octfile code
mem_spec Power spectrum using the maximum entropy principle None in GNU Octave C wrapped in C++/mfile/octfile code
mutual Estimate the mutual information None in GNU Octave C wrapped in C++/mfile/octfile code
notch Notch filter pei_tseng_notch, needs to be verified FORTRAN wrapped in C++/mfile/octfile code
nstat_z Nonstationarity testing via cross-prediction None in GNU Octave C wrapped in C++/mfile/octfile code
pca, pc Principle component analysis 'pcacov' if likely the equivalent; pricomp in statistics pca - C, pc - FORTRAN
poincare Create Poincaré sections None in GNU Octave C wrapped in C++/mfile/octfile code
polyback Fit a polynomial model (backward elimination) polyfit, detrend, wpolyfit C
polynom Fit a polynomial model same as above C
polynomp Fit a polynomial model (reads terms to fit from file) same as above C
polypar Creates parameter file for polynomp same as above C
predict Forecast discriminating statistics for surrogates None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
randomize General constraint randomization (surrogates) There are random function, but I don't think this one exists FORTRAN wrapped in C++/mfile/octfile code
randomize_spikeauto_exp_random Surrogate data preserving event time autocorrelations Same as above FORTRAN wrapped in C++/mfile/octfile code
randomize_spikespec_exp_event Surrogate data preserving event time power spectrum Same as above FORTRAN wrapped in C++/mfile/octfile code
rbf Radial basis functions fit None in GNU Octave C wrapped in C++/mfile/octfile code
recurr Creates a recurrence plot None in GNU Octave C wrapped in C++/mfile/octfile code
resample Resamples data There is 'resample' in Octave, but I believe it does something else C wrapped in C++/mfile/octfile code
rescale Rescale data set This should be in Octave, cannot find... C wrapped in C++/mfile/octfile code
rms Rescale data set and get mean, variance and data interval This should be in Octave, cannot find... FORTRNAN wrapped in C++/mfile/octfile code
sav_gol Savitzky-Golay filter sgolayfilt in signal C
spectrum Power spectrum using FFT bispec from tsa?; hist (fft (.)) FORTRAN
spikeauto Autocorrelation function of event times similar to above FORTRAN
spikespec Power spectrum of event times ar_psd, cpsd is the closest but I do not think they are the same FORTRAN
stp Creates a space-time separation plot None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
surrogates Creates surrogate data None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
timerev Time reversal discrimating statistics for surrogates None in GNU Octave FORTRAN To be reimplemented as mfile
upo Finds unstable periodic orbits and estimates their stability None in GNU Octave FORTRAN wrapped in C++/mfile/octfile code
upoembed Takes the output of upo and create data files out of it None in GNU Octave FORTAN wrapped in C++/mfile/octfile code
wiener1, wiener2 Wiener filter Wiener process exists, might be similar FORTRAN wrapped in C++/mfile/octfile code
xc2 Cross-correlation integral xcorr2 - Needs to be verified that works the same way FORTRAN
xcor Cross-correlations xcorr - Needs to be verified that works same way C
xrecur Cross-recurrence Plot xcorr, or xcorr2 or another function might cover this C
xzero Locally zeroth order cross-prediction None in GNU Octave C