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annotate m-toolbox/classes/+utils/@math/Finv.m @ 0:f0afece42f48

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Import.
author Daniele Nicolodi <nicolodi@science.unitn.it>
date Wed, 23 Nov 2011 19:22:13 +0100
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Daniele Nicolodi <nicolodi@science.unitn.it>
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1 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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2 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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3 % Compute inverse of the cumulative F distribution function
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4 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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5 % CALL
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6 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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7 % x = Finv(p,n1,n2);
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8 %
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9 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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10 % INPUT
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11 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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12 % - p, probability
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Daniele Nicolodi <nicolodi@science.unitn.it>
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13 % - n1, degree of freedom 1
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14 % - n2, degree of freedom 2
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15 %
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16 % References:
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17 % [1] William H. Press, Saul A. Teukolsky, William T. Vetterling, Brian
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18 % P. Flannery, NUMERICAL RECIPES, Cambridge University Press, 2007
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19 %
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20 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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21 % L Ferraioli 06-12-2010
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22 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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23 % $Id: Finv.m,v 1.1 2010/12/06 19:14:36 luigi Exp $
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24 %
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Daniele Nicolodi <nicolodi@science.unitn.it>
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25 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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26 function x = Finv(p,n1,n2)
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27
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28 u = betaincinv(p,n1/2,n2/2);
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29 x = n2.*u./(n1.*(1-u));
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31 end
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