QC_Capability {ggQC} | R Documentation |
Calculate Summary of Quality Performance Parameters
Description
function to report listing of quality performance parameters
Usage
QC_Capability(data = NULL, value = NULL, grouping = NULL,
formula = NULL, method = "xBar.rBar", na.rm = FALSE, LSL = NULL,
USL = NULL, digits = 2)
Arguments
data |
vector or dataframe, as indicated below for each chart type
|
value |
string, Studentized Charts, name of numeric vector in dataframe with values of interest.
|
grouping |
string, Studentized Charts, name of single factor/variable to split
the dataframe "values" by
|
formula |
Studentized Charts: a formula,
such as y ~ x1 + x2, where the y variable is
numeric data to be split into groups according to the grouping x
factors/variables
|
method |
string, calling one of the following methods:
|
na.rm |
a logical value indicating whether NA values should be
stripped before the computation proceeds.
|
LSL |
numeric, Customer's lower specification limit
|
USL |
numeric, Customer's Upper specification limit
-
Proc. Tolerance (sigma): Describes the number of your process sigma (from QC charting) that can fit in your customer's specification window (the larger the better).
-
DNS (sigma): Distance to Nearest Specification (DNS) limit. Measure of how centered your process is and how close you are to the nearest process limit in sigma units.
-
Cp: Describes how many times your 6 sigma process window (from QC charting) can fit in your customer's specification window (the larger the better)
-
Cpk: Describes how centered your process is relative to customer specifications. How many times can you fit a 3 sigma window (from QC charting) between your process center and the nearest customer specification limit.
-
Pp: Describes how many times your 6 sigma process window (overall standard deviation) can fit in your customer's specification window (the larger the better)
-
Ppk: Describes how centered your process is relative to customer specifications. How many times can you fit a 3 sigma window (overall standard deviation) between your process center and the nearest customer specification limit.
|
digits |
integer, how many digits to report.
|
Value
data frame , listing of metric labels and value
[Package
ggQC version 0.0.31
Index]