## Copyright (C) 2013 Pantxo Diribarne ## ## This program is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or ## (at your option) any later version. ## ## This program is distributed in the hope that it will be useful, ## but WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with this program. If not, see . ## -*- texinfo -*- ## @deftypefn {Function File} {@var{retval} =} cdf (@var{name}, @var{X}, @dots{}) ## Return cumulative density function of @var{name} function for value ## @var{x}. ## This is a wrapper around various @var{name}cdf and @var{name}_cdf ## functions. See the individual functions help to learn the signification of ## the arguments after @var{x}. Supported functions and corresponding number of ## additional arguments are: ## ## @multitable @columnfractions 0.02 0.3 0.45 0.2 ## @headitem @tab function @tab alternative @tab args ## @item @tab "beta" @tab "beta" @tab 2 ## @item @tab "bino" @tab "binomial" @tab 2 ## @item @tab "cauchy" @tab @tab 2 ## @item @tab "chi2" @tab "chisquare" @tab 1 ## @item @tab "discrete" @tab @tab 2 ## @item @tab "exp" @tab "exponential" @tab 1 ## @item @tab "f" @tab @tab 2 ## @item @tab "gam" @tab "gamma" @tab 2 ## @item @tab "geo" @tab "geometric" @tab 1 ## @item @tab "gev" @tab "generalized extreme value" @tab 3 ## @item @tab "hyge" @tab "hypergeometric" @tab 3 ## @item @tab "kolmogorov_smirnov" @tab @tab 1 ## @item @tab "laplace" @tab @tab 2 ## @item @tab "logistic" @tab @tab 0 ## @item @tab "logn" @tab "lognormal" @tab 2 ## @item @tab "norm" @tab "normal" @tab 2 ## @item @tab "poiss" @tab "poisson" @tab 2 ## @item @tab "rayl" @tab "rayleigh" @tab 1 ## @item @tab "t" @tab @tab 1 ## @item @tab "unif" @tab "uniform" @tab 2 ## @item @tab "wbl" @tab "weibull" @tab 2 ## @end multitable ## ## @seealso{betacdf, binocdf, cauchy_cdf, chi2cdf, discrete_cdf, ## expcdf, fcdf, gamcdf, geocdf, gevcdf, hygecdf, ## kolmogorov_smirnov_cdf, laplace_cdf, logistic_cdf, logncdf, ## normcdf, poisscdf, raylcdf, tcdf, unifcdf, wblcdf} ## @end deftypefn function [retval] = cdf (varargin) ## implemented functions persistent allcdf = {{"beta", "beta"}, @betacdf, 2, ... {"bino", "binomial"}, @binocdf, 2, ... {"cauchy"}, @cauchy_cdf, 2, ... {"chi2", "chisquare"}, @chi2cdf, 1, ... {"discrete"}, @discrete_cdf, 2, ... {"exp", "exponential"}, @expcdf, 1, ... {"f"}, @fcdf, 2, ... {"gam", "gamma"}, @gamcdf, 2, ... {"geo", "geometric"}, @geocdf, 1, ... {"gev", "generalized extreme value"}, @gevcdf, 3, ... {"hyge", "hypergeometric"}, @hygecdf, 3, ... {"kolmogorov_smirnov"}, @kolmogorov_smirnov_cdf, 1, ... {"laplace"}, @laplace_cdf, 2, ... {"logistic"}, @logistic_cdf, 0, ... # ML has 2 args here {"logn", "lognormal"}, @logncdf, 2, ... {"norm", "normal"}, @normcdf, 2, ... {"poiss", "poisson"}, @poisscdf, 2, ... {"rayl", "rayleigh"}, @raylcdf, 1, ... {"t"}, @tcdf, 1, ... {"unif", "uniform"}, @unifcdf, 2, ... {"wbl", "weibull"}, @wblcdf, 2}; if (numel (varargin) < 2 || ! ischar (varargin{1})) print_usage (); endif name = varargin{1}; x = varargin{2}; varargin(1:2) = []; nargs = numel (varargin); cdfnames = allcdf(1:3:end); cdfhdl = allcdf(2:3:end); cdfargs = allcdf(3:3:end); idx = cellfun (@(x) any (strcmpi (name, x)), cdfnames); if (any (idx)) if (nargs == cdfargs{idx}) retval = feval (cdfhdl{idx}, x, varargin{:}); else error ("cdf: %s requires %d arguments", name, cdfargs{idx}) endif else error ("cdf: %s not implemented", name); endif endfunction