qdap (version 2.3.0)

paste2: Paste an Unspecified Number Of Text Columns

Description

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

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

Usage

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.

Value

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

colpaste2df - Returns a dataframe with pasted columns.

See Also

paste, colsplit2df

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")))
# }