setMissingValue-methods
Setting missing value identifiers
Defines the set of missing values (character or numeric) used when reading and writing data.
Usage
# S4 method for workbook,ANY
setMissingValue(object,value)Arguments
- object
- value
vectororlistof missing value identifiers (eithercharacterornumeric) that are recognized as missing (NA) when reading data. The first element of this vector will be used as missing value identifier when writing data. Ifvalue = NULL(default), missing values are represented by blank cells and only blank cells are recognized as missing.
Details
If there are no specific missing value identifiers defined the default behavior is
to map missing values to blank (empty) cells. Otherwise, each string or numeric cell is
checked if it matches one of the defined missing value identifiers. In addition, the first
missing value identifier (i.e. the first element of the value argument) is used to represent missing values when writing data.
Note that the missing value identifiers have to be either character or numeric.
See Also
'>workbook, writeNamedRegion,
writeWorksheet
Examples
# NOT RUN {
# Load workbook (create if not existing)
wb <- loadWorkbook("missingValue.xlsx", create = TRUE)
# Create a worksheet named 'airquality'
createSheet(wb, name = "airquality")
# Create a named region called 'airquality' on the sheet called
# 'airquality'
createName(wb, name = "airquality", formula = "airquality!$A$1")
# Set the missing value string to 'missing'
setMissingValue(wb, value = "missing")
# Write built-in data set 'airquality' to the above defined named region
writeNamedRegion(wb, airquality, name = "airquality")
# Save workbook
saveWorkbook(wb)
# clean up
file.remove("missingValue.xlsx")
# }