Mercurial > hg > octave-lyh

comparison scripts/statistics/distributions/laplace_cdf.m @ 4859:265d566cc770

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
[project @ 2004-04-08 23:52:45 by jwe]
author jwe
date Thu, 08 Apr 2004 23:52:45 +0000
parents 38c61cbf086c
children 4c8a2e4e0717
comparison
equal deleted inserted replaced
4858:499d2ca46982 4859:265d566cc770
30 30
31 if (nargin != 1) 31 if (nargin != 1)
32 usage ("laplace_cdf (x)"); 32 usage ("laplace_cdf (x)");
33 endif 33 endif
34 34
35 [r, c] = size (x); 35 cdf = zeros (size (x));
36 s = r * c;
37 x = reshape (x, 1, s);
38 cdf = zeros (1, s);
39 36
40 k = find (isnan (x)); 37 k = find (isnan (x));
41 if (any (k)) 38 if (any (k))
42 cdf(k) = NaN * ones (1, length (k)); 39 cdf(k) = NaN;
43 endif 40 endif
44 41
45 k = find (x == Inf); 42 k = find (x == Inf);
46 if (any (k)) 43 if (any (k))
47 cdf(k) = ones (1, length (k)); 44 cdf(k) = 1;
48 endif 45 endif
49 46
50 k = find ((x > -Inf) & (x < Inf)); 47 k = find ((x > -Inf) & (x < Inf));
51 if (any (k)) 48 if (any (k))
52 cdf(k) = (1 + sign (x(k)) .* (1 - exp (- abs (x(k))))) / 2; 49 cdf(k) = (1 + sign (x(k)) .* (1 - exp (- abs (x(k))))) / 2;
53 endif 50 endif
54 51
55 cdf = reshape (cdf, r, c);
56
57 endfunction 52 endfunction