stat_QC_CAPA: Generic Function for drawing QC capability information on...
In ggmtech/ggQC: Quality Control Charts for 'ggplot'

Description Usage Arguments Value Examples

Generic Function for drawing QC capability information on plots

stat_QC_CAPA(LSL, USL, method = "xBar.rBar", digits = 1,
  mapping = NULL, data = NULL, geom = "vline",
  position = "identity", na.rm = FALSE, show.legend = NA,
  inherit.aes = TRUE, show = c("LSL", "USL"), direction = "v",
  type = NA, ...)

`LSL`	numeric, Customer's lower specification limit
`USL`	numeric, Customer's Upper specification limit
`method`	string, calling the following methods: Individuals Charts: XmR, Studentized Charts: xBar.rBar, xBar.rMedian, xBar.sBar, xMedian.rBar, xMedian.rMedian
`digits`	-
`mapping`	Set of aesthetic mappings created by `aes()` or `aes_()`. If specified and `inherit.aes = TRUE` (the default), it is combined with the default mapping at the top level of the plot. You must supply `mapping` if there is no plot mapping.
`data`	The data to be displayed in this layer. There are three options: If `NULL`, the default, the data is inherited from the plot data as specified in the call to `ggplot()`. A `data.frame`, or other object, will override the plot data. All objects will be fortified to produce a data frame. See `fortify()` for which variables will be created. A `function` will be called with a single argument, the plot data. The return value must be a `data.frame`, and will be used as the layer data.
`geom`	The geometric object to use display the data
`position`	Position adjustment, either as a string, or the result of a call to a position adjustment function.
`na.rm`	-
`show.legend`	logical. Should this layer be included in the legends? `NA`, the default, includes if any aesthetics are mapped. `FALSE` never includes, and `TRUE` always includes. It can also be a named logical vector to finely select the aesthetics to display.
`inherit.aes`	If `FALSE`, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g. `borders()`.
`show`	-
`direction`	-
`type`	-
`...`	Other arguments passed on to `layer()`. These are often aesthetics, used to set an aesthetic to a fixed value, like `colour = "red"` or `size = 3`. They may also be parameters to the paired geom/stat.

ggplot control charts.

# Load Libraries ----------------------------------------------------------
require(ggQC)
require(ggplot2)


# Setup Data --------------------------------------------------------------
set.seed(5555)
Process1 <- data.frame(ProcessID = as.factor(rep(1,100)),
                       Value = rnorm(100,10,1),
                       Subgroup = rep(1:20, each=5),
                       Process_run_id = 1:100)
set.seed(5556)
Process2 <- data.frame(ProcessID = as.factor(rep(2,100)),
                       Value = rnorm(100,20, 1),
                       Subgroup = rep(1:10, each=10),
                       Process_run_id = 101:200)

df <- rbind(Process1, Process2)

######################
## Example 1 XmR    ##
######################
##You may need to use the r-studio Zoom for these plots or make the size of the
##stat_QC_cap_summary smaller with size = some number"

method <- "XmR"

# Normal Histogram XmR --------------------------------------------------------

EX1.1 <-  ggplot(df[df$ProcessID == 1,], aes(x=Value, QC.Subgroup=Subgroup)) +
  geom_histogram(binwidth = 1, color="purple") +
  geom_hline(yintercept=0, color="grey") +
  stat_QC_cap_vlines(LSL = 5, USL = 15, show=c("X", "LSL", "USL"), method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, show=c("X", "LSL", "USL"), method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=2, size=4) +
  scale_x_continuous(expand =  expand_scale(mult = c(0.15,.8))) +
  ylim(0,45)
#Ex1.1

# Facet Histogram XmR -----------------------------------------------------

EX1.2 <- ggplot(df[order(df$Process_run_id),],
                aes(x=Value, QC.Subgroup=Subgroup, color=ProcessID)) +
  geom_histogram(binwidth = 1) +
  geom_hline(yintercept=0, color="grey") +
  stat_QC_cap_vlines(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),#show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=4, size=4) +
  scale_x_continuous(expand =  ggplot2::expand_scale(mult = c(0.15,.8))) +
  facet_grid(.~ProcessID) + ylim(0,45)
#EX1.2

# Facet Density Plot XmR -------------------------------------------------

EX1.3 <- ggplot(df[df$ProcessID == 1,], aes(x=Value, QC.Subgroup=Subgroup)) +
  geom_density(bw = .4, fill="purple", trim=TRUE) +
  geom_hline(yintercept=0, color="grey") +
  stat_QC_cap_vlines(LSL = 5, USL = 15, show=c("X", "LSL", "USL"), method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, show=c("X", "LSL", "USL"), method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=2, size=4) +

  scale_x_continuous(expand =  expand_scale(mult = c(0.15,.8)))  + ylim(0,.5)
#EX1.3

# Facet Density Plot XmR --------------------------------------------------

EX1.4 <- ggplot(df[order(df$Process_run_id),],
                aes(x=Value, QC.Subgroup=Subgroup, color=ProcessID)) +
  geom_density(bw = .4, fill="grey", trim=TRUE ) +
  stat_QC_cap_vlines(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method, #py=.3,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=4, size=4) +
  scale_x_continuous(expand =  ggplot2::expand_scale(mult = c(0.15,.8))) +
  # geom_hline(yintercept=0, color="black") +
  facet_grid(.~ProcessID) + ylim(0,.5)
#EX1.4


########################################
##  Example 2: xBar.rBar or xBar.sBar ##
########################################

method <- "xBar.rBar" #Alternativly Use "xBar.sBar" if desired


# Single Histogram xBar.rBar ----------------------------------------------

EX2.1 <- ggplot(df[df$ProcessID==1,], aes(x=Value, QC.Subgroup=Subgroup)) +
  geom_histogram(binwidth = 1) +
  stat_QC_cap_vlines(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method, #py=.3,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=4, size=4) +
  scale_x_continuous(expand =  ggplot2::expand_scale(mult = c(0.15,.8))) #+
#EX2.1


# Faceted Histogram xBar.rBar ---------------------------------------------

EX2.2 <- ggplot(df, aes(x=Value, QC.Subgroup=Subgroup)) +
  geom_histogram(binwidth = 1) +
  stat_QC_cap_vlines(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method, #py=.3,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=4, size=4) +
  scale_x_continuous(expand =  ggplot2::expand_scale(mult = c(0.15,.8)))+
  facet_grid(.~ProcessID, scales="free_x")
#EX2.2

# Single Density xBar.rBar ----------------------------------------------

EX2.3 <- ggplot(df[df$ProcessID==1,], aes(x=Value, QC.Subgroup=Subgroup)) +
  geom_density(bw = .4, fill="grey", alpha=.4) +
  stat_QC_cap_vlines(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method, #py=.3,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=4, size=4) +
  scale_x_continuous(expand =  ggplot2::expand_scale(mult = c(0.15,.8))) #+
#EX2.3

# Faceted Density xBar.rBar ---------------------------------------------

EX2.4 <-  ggplot(df, aes(x=Value, QC.Subgroup=Subgroup)) +
  geom_density(bw = .4, fill="grey", alpha=.4) +
  stat_QC_cap_vlines(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method, #py=.3,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=4, size=4) +
  scale_x_continuous(expand =  ggplot2::expand_scale(mult = c(0.15,.8)))+
  facet_grid(.~ProcessID, scales="free_x")
#EX2.4


###############################
##  Example 3: xBar.rMedian  ##
###############################

## Plots involving medians should give warning: "median based QC methods represent
## at best *potential* process capability"

##These plot work the same as in examples 2.X; below is an example.

method <- "xBar.rMedian"
EX3.1 <- ggplot(df[order(df$Process_run_id),], aes(x=Value, QC.Subgroup=Run)) +
  geom_histogram(binwidth = 1) +
  stat_QC_cap_vlines(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_vlabels(LSL = 5, USL = 15, method=method) +
  stat_QC_cap_summary(LSL = 5, USL = 15, method=method, #py=.3,
                      #show="ALL",
                      #show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk",
                      #       "LCL", "X", "UCL", "Sig"),
                      #show=c("Sig","TOL", "DNS"),
                      show=c("TOL","DNS", "Cp", "Cpk", "Pp", "Ppk"),
                      color="black", digits=4, size=4) +
  scale_x_continuous(expand =  ggplot2::expand_scale(mult = c(0.15,.8)))
#EX3.1