R: Write an object to a worksheet

writeData {openxlsx} | R Documentation

## Write an object to a worksheet

### Description

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
    )

### 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

### 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.

### Value

invisible(0)

### Author(s)

Alexander Walker

### See Also

`writeDataTable`

### 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)
    ## Not run:
    saveWorkbook(wb, "writeDataExample.xlsx", overwrite = TRUE)

    ## End(Not run)

[Package openxlsx version 4.2.4 Index]