Dataplot Vol 2 Auxiliary Chapter

UNICHAZ

Name:
    UNICHAZ (LET)
Type:
    Library Function
Purpose:
    Compute the standard uniform cumulative hazard function.
Description:
    The standard uniform distribution has the following cumulative hazard function:

      H(x) = -log(1-x)            for 0 <= x < 1
Syntax:
    LET <y2> = UNICHAZ(<y1>)             <SUBSET/EXCEPT/FOR qualification>
    where <y1> is a variable, a number, or a parameter containing values between 0 and 1;
                  <y2> is a variable or a parameter (depending on what <y1> is) where the computed uniform cumulative hazard value is stored;
    and where the <SUBSET/EXCEPT/FOR qualification> is optional.
Examples:
    LET A = UNICHAZ(0.7)
    LET X2 = UNICHAZ(X1)
Note:
    The general uniform distribution has the following hazard function:

      H(x) = -log((b-x)/(b-a))    for a <= x < b

    where a and b are the lower and upper limits of the uniform distribution.

Default:
    None
Synonyms:
    None
Related Commands:
    UNICDF = Compute the uniform cumulative distribution function.
    UNIHAZ = Compute the uniform hazard function.
    UNIPDF = Compute the uniform probability density function.
    UNIPPF = Compute the uniform percent point function.
    UNISF = Compute the uniform sparsity function.
Reference:
    "Statistical Distributions, 2nd. Ed.", Evans, Hastings, and Peacock, John Wiley and Sons, 1993.
Applications:
    Reliability
Implementation Date:
    1998/5
Program:
    XLIMITS 0 1
    XTIC OFFSET 0.05 0.05
    TITLE AUTOMATIC
    PLOT UNICHAZ(X) FOR X = 0 0.01 0.99

    plot generated by sample program

Date created: 6/5/2001
Last updated: 4/4/2003
Please email comments on this WWW page to alan.heckert@nist.gov.