| dataValidation | R Documentation | 
Add Excel data validation to cells
dataValidation(
  wb,
  sheet,
  cols,
  rows,
  type,
  operator,
  value,
  allowBlank = TRUE,
  showInputMsg = TRUE,
  showErrorMsg = TRUE
)
| wb | A workbook object | 
| sheet | A name or index of a worksheet | 
| cols | Contiguous columns to apply conditional formatting to | 
| rows | Contiguous rows to apply conditional formatting to | 
| type | One of 'whole', 'decimal', 'date', 'time', 'textLength', 'list' (see examples) | 
| operator | One of 'between', 'notBetween', 'equal', 'notEqual', 'greaterThan', 'lessThan', 'greaterThanOrEqual', 'lessThanOrEqual' | 
| value | a vector of length 1 or 2 depending on operator (see examples) | 
| allowBlank | logical | 
| showInputMsg | logical | 
| showErrorMsg | logical | 
wb <- createWorkbook()
addWorksheet(wb, "Sheet 1")
addWorksheet(wb, "Sheet 2")
writeDataTable(wb, 1, x = iris[1:30, ])
dataValidation(wb, 1,
  col = 1:3, rows = 2:31, type = "whole",
  operator = "between", value = c(1, 9)
)
dataValidation(wb, 1,
  col = 5, rows = 2:31, type = "textLength",
  operator = "between", value = c(4, 6)
)
## Date and Time cell validation
df <- data.frame(
  "d" = as.Date("2016-01-01") + -5:5,
  "t" = as.POSIXct("2016-01-01") + -5:5 * 10000
)
writeData(wb, 2, x = df)
dataValidation(wb, 2,
  col = 1, rows = 2:12, type = "date",
  operator = "greaterThanOrEqual", value = as.Date("2016-01-01")
)
dataValidation(wb, 2,
  col = 2, rows = 2:12, type = "time",
  operator = "between", value = df$t[c(4, 8)]
)
## Not run: 
saveWorkbook(wb, "dataValidationExample.xlsx", overwrite = TRUE)
## End(Not run)
######################################################################
## If type == 'list'
# operator argument is ignored.
wb <- createWorkbook()
addWorksheet(wb, "Sheet 1")
addWorksheet(wb, "Sheet 2")
writeDataTable(wb, sheet = 1, x = iris[1:30, ])
writeData(wb, sheet = 2, x = sample(iris$Sepal.Length, 10))
dataValidation(wb, 1, col = 1, rows = 2:31, type = "list", value = "'Sheet 2'!$A$1:$A$10")
# openXL(wb)
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