Write an object to a worksheet

Write an object to worksheet with optional styling.

Usage

writeData(
  wb,
  sheet,
  x,
  startCol = 1,
  startRow = 1,
  array = FALSE,
  xy = NULL,
  colNames = TRUE,
  rowNames = FALSE,
  headerStyle = openxlsx_getOp("headerStyle"),
  borders = openxlsx_getOp("borders", "none"),
  borderColour = openxlsx_getOp("borderColour", "black"),
  borderStyle = openxlsx_getOp("borderStyle", "thin"),
  withFilter = openxlsx_getOp("withFilter", FALSE),
  keepNA = openxlsx_getOp("keepNA", FALSE),
  na.string = openxlsx_getOp("na.string"),
  name = NULL,
  sep = ", ",
  col.names,
  row.names,
  overwrite = FALSE
)

Arguments

wb

A Workbook object containing a worksheet.

sheet

The worksheet to write to. Can be the worksheet index or name.

x

Object to be written. For classes supported look at the examples.

startCol

A vector specifying the starting column to write to.

startRow

A vector specifying the starting row to write to.

array

A bool if the function written is of type array

xy

An alternative to specifying startCol and startRow individually. A vector of the form c(startCol, startRow).

colNames

If TRUE, column names of x are written.

rowNames

If TRUE, data.frame row names of x are written.

headerStyle

Custom style to apply to column names.

borders

Either "none" (default), "surrounding", "columns", "rows" or respective abbreviations. If "surrounding", a border is drawn around the data. If "rows", a surrounding border is drawn with a border around each row. If "columns", a surrounding border is drawn with a border between each column. If "all" all cell borders are drawn.

borderColour

Colour of cell border. A valid colour (belonging to colours() or a hex colour code, eg see here).

borderStyle

Border line style

none

no border

thin

thin border

medium

medium border

dashed

dashed border

dotted

dotted border

thick

thick border

double

double line border

hair

hairline border

mediumDashed

medium weight dashed border

dashDot

dash-dot border

mediumDashDot

medium weight dash-dot border

dashDotDot

dash-dot-dot border

mediumDashDotDot

medium weight dash-dot-dot border

slantDashDot

slanted dash-dot border

withFilter

If TRUE or NA, add filters to the column name row. NOTE can only have one filter per worksheet.

keepNA

If TRUE, NA values are converted to #N/A (or na.string, if not NULL) in Excel, else NA cells will be empty.

na.string

If not NULL, and if keepNA is TRUE, NA values are converted to this string in Excel.

name

If not NULL, a named region is defined.

sep

Only applies to list columns. The separator used to collapse list columns to a character vector e.g. sapply(x$list_column, paste, collapse = sep).

row.names, col.names

Deprecated, please use rowNames, colNames instead

overwrite

If TRUE, remove all existing cell values from the entire target worksheet before writing x (not just the cells in the target write range).

Value

invisible(0)

Details

Formulae written using writeFormula to a Workbook object will not get picked up by read.xlsx(). This is because only the formula is written and left to Excel to evaluate the formula when the file is opened in Excel.

See also

writeDataTable()

Author

Alexander Walker

Examples

## See formatting vignette for further examples.

## Options for default styling (These are the defaults)
options("openxlsx.borderColour" = "black")
options("openxlsx.borderStyle" = "thin")
options("openxlsx.dateFormat" = "mm/dd/yyyy")
options("openxlsx.datetimeFormat" = "yyyy-mm-dd hh:mm:ss")
options("openxlsx.numFmt" = NULL)

## Change the default border colour to #4F81BD
options("openxlsx.borderColour" = "#4F81BD")


#####################################################################################
## Create Workbook object and add worksheets
wb <- createWorkbook()

## Add worksheets
addWorksheet(wb, "Cars")
addWorksheet(wb, "Formula")


x <- mtcars[1:6, ]
writeData(wb, "Cars", x, startCol = 2, startRow = 3, rowNames = TRUE)

#####################################################################################
## Bordering

writeData(wb, "Cars", x,
  rowNames = TRUE, startCol = "O", startRow = 3,
  borders = "surrounding", borderColour = "black"
) ## black border

writeData(wb, "Cars", x,
  rowNames = TRUE,
  startCol = 2, startRow = 12, borders = "columns"
)

writeData(wb, "Cars", x,
  rowNames = TRUE,
  startCol = "O", startRow = 12, borders = "rows"
)


#####################################################################################
## Header Styles

hs1 <- createStyle(
  fgFill = "#DCE6F1", halign = "CENTER", textDecoration = "italic",
  border = "Bottom"
)

writeData(wb, "Cars", x,
  colNames = TRUE, rowNames = TRUE, startCol = "B",
  startRow = 23, borders = "rows", headerStyle = hs1, borderStyle = "dashed"
)


hs2 <- createStyle(
  fontColour = "#ffffff", fgFill = "#4F80BD",
  halign = "center", valign = "center", textDecoration = "bold",
  border = "TopBottomLeftRight"
)

writeData(wb, "Cars", x,
  colNames = TRUE, rowNames = TRUE,
  startCol = "O", startRow = 23, borders = "columns", headerStyle = hs2
)




#####################################################################################
## Hyperlinks
## - vectors/columns with class 'hyperlink' are written as hyperlinks'

v <- rep("https://CRAN.R-project.org/", 4)
names(v) <- paste0("Hyperlink", 1:4) # Optional: names will be used as display text
class(v) <- "hyperlink"
writeData(wb, "Cars", x = v, xy = c("B", 32))


#####################################################################################
## Formulas
## - vectors/columns with class 'formula' are written as formulas'

df <- data.frame(
  x = 1:3, y = 1:3,
  z = paste0(paste0("A", 1:3 + 1L), paste0("B", 1:3 + 1L), sep = " + "),
  stringsAsFactors = FALSE
)

class(df$z) <- c(class(df$z), "formula")

writeData(wb, sheet = "Formula", x = df)


#####################################################################################
## Save workbook
## Open in excel without saving file: openXL(wb)
if (FALSE) { # \dontrun{
saveWorkbook(wb, "writeDataExample.xlsx", overwrite = TRUE)
} # }