I want that in the quotient n_i/c_i, instead of the line being oblique, the line is horizontal. I try to use "\frac{}" but I get an error.
I attach image and code of the quotient with the oblique line.
library(grid)
library(gridExtra)
library(glue)
data1P <- data.frame(c("[1, 5)", "[5, 7)", "[7, 9)", "[9, 10]"),
c("6", "7" ,"22" ,"23"),
c("4", "2", "2", "1"),
c("1.5", "3.5", "11" , "23"))
colnames(data1P) <- lapply(list("X\\Y= [1,4)","n[i]","c[i]","d[i]==paste(n[i]/c[i])"),glue)
tt <- ttheme_default(colhead=list(fg_params = list(parse=TRUE)))
grid.newpage()
grid.table(data1P, rows = NULL, theme=tt)