wblcdf
statistics: p = wblcdf (x)
statistics: p = wblcdf (x, lambda)
statistics: p = wblcdf (x, lambda, k)
statistics: p = wblcdf (…, 'upper')
statistics: [p, plo, pup] = wblcdf (x, lambda, k, pcov)
statistics: [p, plo, pup] = wblcdf (x, lambda, k, pcov, alpha)
statistics: [p, plo, pup] = wblcdf (…, 'upper')
Weibull cumulative distribution function (CDF).
For each element of x, compute the cumulative distribution function (CDF) of the Weibull distribution with scale parameter lambda and shape parameter k. The size of p is the common size of x, lambda and k. A scalar input functions as a constant matrix of the same size as the other inputs.
Default values are lambda = 1, k = 1.
When called with three output arguments, [p, plo,
pup] it computes the confidence bounds for p when the input
parameters lambda and k are estimates. In such case, pcov,
a 2-by-2 matrix containing the covariance matrix of the estimated parameters,
is necessary. Optionally, alpha has a default value of 0.05, and
specifies 100 * (1 - alpha)% confidence bounds. plo and pup
are arrays of the same size as p containing the lower and upper
confidence bounds.
[…] = wblcdf (…, "upper") computes the upper tail
probability of the lognormal distribution.
Further information about the Weibull distribution can be found at https://en.wikipedia.org/wiki/Weibull_distribution
Input arguments must be double or single; integer, logical,
and character arrays are rejected. MATLAB accepts a character array and
evaluates it at the character codes, which Octave deliberately does not,
since a character array is an integer type and integers are refused too.
The prob.WeibullDistribution class names these same two parameters
A and B, after MATLAB. lambda is its A and
k is its B.
See also: wblinv, wblpdf, wblrnd, wblstat, wblplot
Source Code: wblcdf
Plot various CDFs from the Weibull distribution
x = 0:0.001:2.5;
p1 = wblcdf (x, 1, 0.5);
p2 = wblcdf (x, 1, 1);
p3 = wblcdf (x, 1, 1.5);
p4 = wblcdf (x, 1, 5);
plot (x, p1, '-b', x, p2, '-r', x, p3, '-m', x, p4, '-g')
grid on
legend ({'λ = 1, k = 0.5', 'λ = 1, k = 1', ...
'λ = 1, k = 1.5', 'λ = 1, k = 5'}, 'location', 'southeast')
title ('Weibull CDF')
xlabel ('values in x')
ylabel ('probability')