paste2 function

Paste an Unspecified Number Of Text Columns

paste2 - Paste unspecified columns or a list of vectors together.

colpaste2df - Wrapper for paste2 that returns a dataframe with columns pasted together.

paste2(multi.columns, sep = ".", handle.na = TRUE, trim = TRUE)

colpaste2df(
  mat,
  combined.columns,
  sep = ".",
  name.sep = "&",
  keep.orig = TRUE,
  ...
)

Arguments

• multi.columns: The multiple columns or a list of vectors to paste together.
• sep: The character to be used in paste2 to paste the columns.
• handle.na: logical. If TRUE returns NA if any column/vector contains a missing value.
• trim: logical. If TRUE leading/trailing white space is removed.
• mat: A matrix or dataframe.
• combined.columns: A list of named vectors of the colnames/indexes of the numeric columns to be pasted. If a vector is unnamed a name will be assigned.
• name.sep: The character to be used to paste the column names.
• keep.orig: logical. If TRUE the original columns (i.e., combined.columns) will be retained as well.
• ``: Other arguments passed to paste2.

Returns

paste2 - Returns a vector with row-wise elements pasted together.

colpaste2df - Returns a dataframe with pasted columns.

Note

paste differs from paste2

because paste does not allowed an unspecified number of columns to be pasted. This behavior can be convenient for inside of functions when the number of columns being pasted is unknown.

Examples

## Not run:

## paste2 examples
v <- rep(list(state.abb[1:8],  month.abb[1:8]) , 5)
n <- sample(5:10, 1)
paste(v[1:n]) #odd looking return
paste2(v[1:n]) 
paste2(v[1:n], sep="|") 
paste2(mtcars[1:10,], sep="|") 
paste(mtcars[1:10,], sep="|") #odd looking return
paste2(CO2[1:10,], sep="|-|") 

## colpaste2df examples
A <- list(
    a = c(1, 2, 3),
    b = qcv(mpg, hp),
    c = c("disp", "am")
)
B <- list(
    c(1, 2, 3),
    new.col = qcv(mpg, hp),
    c("disp", "am")
)
E <- list(
    c(1, 2, 3, 4, 5),
    qcv(mpg, hp),
    c("disp", "am")
)

colpaste2df(head(mtcars), A)
colpaste2df(head(mtcars), B)
colpaste2df(head(mtcars), E)
colpaste2df(head(mtcars), qcv(am, disp, drat), sep ="_", name.sep = "|")
colpaste2df(head(CO2), list(c(1, 2, 3, 4, 5), qcv("conc", "uptake")))
## End(Not run)

See Also

paste, colsplit2df