CODEWITHSUNDEEP
ropenxlsx
Allerious
Allerious

Reputation: 155

How can I bold part of a text string using openxlsx?

I want to bold part of a text string. For example, is there a way to only bold 'text' in 'this is my text string' using openxlsx R package:

wb <- openxlsx::createWorkbook()

openxlsx::addWorksheet(wb, 'Contents')

bold_text <- openxlsx::createStyle(textDecoration = "bold")
openxlsx::addStyle(wb, sheet = 'Contents', bold_text, rows = 1, cols = 1, gridExpand = TRUE, stack = TRUE)

writeData(wb, sheet = 'Contents', x = 'this is my text string', startRow = 1, startCol = 1)

openxlsx::saveWorkbook(wb, file =  'D:testing.xlsx', overwrite = TRUE)

Upvotes: 12

Views: 1238

Answers (1)

Tim G
Tim G

Reputation: 4448

Clonky way in openxlsx

Sure, you can replace text with its 𝐁𝐎𝐋𝐃 Unicode equivalent which we then combine with normal text using paste0. You can do the same for all sorts of font styles.

out

setwd(dirname(rstudioapi::getSourceEditorContext()$path)) # set the current script's location as working directory
#install.packages("openxlsx")
library(openxlsx)

file <- "BoldText.xlsx"
sheet <- 'Contents'

wb <- openxlsx::createWorkbook()
openxlsx::addWorksheet(wb, sheet)

b <- function(text) {
  # Define a mapping of characters to their bold Unicode equivalents
  bold_map <- list(
    A = "𝐀", B = "𝐁", C = "𝐂", D = "𝐃", E = "𝐄", F = "𝐅", G = "𝐆", H = "𝐇", I = "𝐈", J = "𝐉", K = "𝐊", L = "𝐋", M = "𝐌", N = "𝐍", O = "𝐎", P = "𝐏", Q = "𝐐", R = "𝐑", S = "𝐒", T = "𝐓", U = "𝐔", V = "𝐕", W = "𝐖", X = "𝐗", Y = "𝐘", Z = "𝐙",
    a = "𝐚", b = "𝐛", c = "𝐜", d = "𝐝", e = "𝐞", f = "𝐟", g = "𝐠", h = "𝐡", i = "𝐢", j = "𝐣", k = "𝐤", l = "𝐥", m = "𝐦", n = "𝐧", o = "𝐨", p = "𝐩", q = "𝐪", r = "𝐫", s = "𝐬", t = "𝐭", u = "𝐮", v = "𝐯", w = "𝐰", x = "𝐱", y = "𝐲", z = "𝐳",
    `0` = "𝟎", `1` = "𝟏", `2` = "𝟐", `3` = "𝟑", `4` = "𝟒", `5` = "𝟓", `6` = "𝟔",`7` = "𝟕", `8` = "𝟖", `9` = "𝟗"
  )
  paste(sapply(strsplit(text, NULL)[[1]], function(char) { ifelse(char %in% names(bold_map), bold_map[[char]], char) }), collapse = "")
}

writeData(wb, sheet = sheet, x = paste0('this is my', b(" test "),'String'), startCol = 1, startRow = 1)

saveWorkbook(wb, file = file, overwrite = TRUE)

If you are fine with using openxlsx2

Then as user @Micheal Dewar pointed out, it can be done much simpler:

### Using openxlsx2
library(openxlsx2)

# Create formatted text
txt <- paste( fmt_txt("This is my "), fmt_txt("Test", bold = TRUE, size = 11),fmt_txt(" String."))

# Create workbook and add data
wb <- wb_workbook()$add_worksheet()$add_data(x = txt)

wb$save("BoldText_openxlsx2.xlsx")

Upvotes: 4

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