
GL4CDFName:
The general form of the type 4 generalized logistic probability density function can be obtained by replacing x in the above formula with (xloc)/scale. The generalized logistic type 4 cumulative distribution function is computed by numerically integrating the probability density function. Dataplot uses the DQAGI routine from the Slatec library to perform the integration.
<SUBSET/EXCEPT/FOR qualification> where <x> is a variable, number or parameter; <p> is a number or parameter that specifies the value of the first shape parameter; <q> is a number or parameter that specifies the value of the second shape parameter; <loc> is a number or parameter that specifies the value of the location parameter; <scale> is a number or parameter that specifies the value of the scale parameter; <y> is a variable or a parameter (depending on what <x> is) where the computed generalized logistic type 3 cdf value is stored; and where the <SUBSET/EXCEPT/FOR qualification> is optional. The location and scale parameters are optional.
LET X2 = GL4CDF(X1,P,Q) PLOT GL4CDF(X,P,Q) FOR X = 5 0.01 5
LET PA = DATA 0.5 1 2 LET QA = DATA 0.5 1 2 MULTIPLOT 3 3 MULTIPLOT CORNER COORDINATES 0 0 100 95 MULTIPLOT SCALE FACTOR 3 LABEL CASE ASIS TITLE CASE ASIS TITLE DISPLACEMENT 2 X1LABEL X Y1LABEL Probability X1LABEL DISPLACEMENT 14 Y1LABEL DISPLACEMENT 15 . LOOP FOR K = 1 1 4 LET P = PA(K) LOOP FOR L = 1 1 3 LET Q = QA(L) TITLE P = ^P, Q = ^Q PLOT GL4CDF(X,P,Q) FOR X = 5 0.01 5 END OF LOOP END OF LOOP END OF MULTIPLOT CASE ASIS MOVE 50 97 JUSTIFICATION CENTER TEXT Generalized Logistic Type 4 CDF's
Date created: 3/27/2006 