context("Calculate XMR Short Run Recalculation")
library(testthat)
library(dplyr)
library(tidyr)
Measure <- c(58, 57, 69, 62, 66, 58, 66, 52, 51, 51, 87, 78, 99, 100, 89, 82, 95, 99)
Time <- c(2000:2017)
example_data <- data.frame(Time, Measure)
df <- xmr(example_data, measure = "Measure",
recalc = T, shortrun = c(3,4),
reuse = T, testing = T)
test_that("Lower shortrun recalculation is correct", {
mv <- df$`Moving Range`[df$Order %in% c(8, 9, 10)] %>% mean()
avm <- df$`Average Moving Range`[8]
calc <- avm - mv
max <- max(calc, na.rm = T)
expect_lt(max, 0.01)
m <- df$`Measure`[df$Order %in% c(8, 9, 10)] %>% mean()
cl <- df$`Central Line`[8]
calc <- m-cl
max <- max(calc, na.rm = T)
expect_lt(max, 0.01)
})
test_that("Upper shortrun recalculation is correct", {
mv <- df$`Moving Range`[df$Order %in% c(11, 12, 13)] %>% mean()
avm <- df$`Average Moving Range`[11]
calc <- avm - mv
max <- max(calc, na.rm = T)
expect_lt(max, 0.01)
m <- df$Measure[df$Order %in% c(11, 12, 13)] %>% mean()
cl <- df$`Central Line`[11]
calc <- m - cl
max <- max(calc, na.rm = T)
expect_lt(max, 0.01)
})
test_that("Upper Process Limit calculation is correct", {
up <- df$`Upper Natural Process Limit`
calc <- (df$`Central Line` + (2.66 * df$`Average Moving Range`))
max <- max(up - calc, na.rm = T)
expect_lt(max, 0.01)
})
test_that("Lower Process Limit calculation is correct", {
lower <- df$`Lower Natural Process Limit`
calc <- (df$`Central Line` - (2.66 * df$`Average Moving Range`))
calc <- ifelse(calc < 0, 0, calc)
max <- max(lower - calc, na.rm = T)
expect_lt(max, 0.01)
})
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