compare_plans: Probability of detection or non detection versus fraction...

In grabsampling: Probability of Detection for Grab Sample Selection

Description

This function allows comparison of different sampling schemes, which can be systematic and random sampling of primary increments or grab sampling of blocks of primary increments. A graphical display of the probability of detection P_D or probability of non detection P_{ND} versus fraction nonconforming p for up to four selected schemes will be produced.

Usage

compare_plans(d, N, plim, type, c1, r1, t1, method1, c2, r2, t2, method2,
                     c3, r3, t3, method3, c4, r4, t4, method4)

Arguments

d	serial correlation of contamination between the primary increments
N	length of the production
plim	the upper limit for graphing the fraction nonconforming or proportion of contaminated increments
type	what type of graph we want to produce such as D or ND. compare_plans produces a graphical display of P_D or P_{ND} versus p depending on the D or ND of type
c1, c2, c3, c4	acceptance numbers
r1, r2, r3, r4	number of primary increments in a grab sample or grab sample size
t1, t2, t3, t4	number of grab samples
method1, method2, method3, method4	what sampling method we have applied such as 'systematic' or 'random' selection methods

Value

Probability of detection or non detection vs limiting fraction curves

Examples

c1 <- 0
c2 <- 0
c3 <- 0
c4 <- 0
r1 <- 1
r2 <- 10
r3 <- 30
r4 <- 75
t1 <- 750
t2 <- 75
t3 <- 25
t4 <- 10
d <- 0.99
N <- 1e9
method1 <- method2 <- method3 <- method4 <- 'systematic'
plim <- 0.10
compare_plans(d, N, plim, type ='D', c1, r1, t1, method1, c2, r2, t2, method2)
compare_plans(d, N, plim, type ='D', c1, r1, t1, method1, c2, r2, t2, method2,
                        c3, r3, t3, method3)
compare_plans(d, N, plim, type ='D', c1, r1, t1, method1, c2, r2, t2, method2,
                        c3, r3, t3, method3, c4, r4, t4, method4)
compare_plans(d, N, plim, type ='ND', c1, r1, t1, method1, c2, r2, t2, method2,
                        c3, r3, t3, method3, c4, r4, t4, method4)

grabsampling documentation built on March 13, 2020, 5:07 p.m.