Shows rows from the head and tail of a data frame or matrix.
Shows rows from the head and tail of a data frame or matrix.
headtail(x, n = 3L, which = NULL, addrownums = TRUE, ...)
x |
A data frame or matrix. |
n |
A single numeric that indicates the number of rows to display from each of the head and tail of structure. |
which |
A numeric or string vector that contains the column numbers or names to display. Defaults to showing all columns. |
addrownums |
If there are no row names for the MATRIX, then create them from the row numbers. |
... |
Arguments to be passed to or from other methods. |
A matrix or data.frame with 2*n rows.
If n is larger than the number of rows in x then all of x is displayed.
Derek H. Ogle, derek@derekogle.com
peek
headtail(iris)
headtail(iris,10)
headtail(iris,which=c("Sepal.Length","Sepal.Width","Species"))
headtail(iris,which=grep("Sepal",names(iris)))
headtail(iris,n=200)
## Make a matrix for demonstration purposes only
miris <- as.matrix(iris[,1:4])
headtail(miris)
headtail(miris,10)
headtail(miris,addrownums=FALSE)
headtail(miris,10,which=2:4)
## Make a tbl_df type from tibble ... note how headtail()
## is not limited by the tbl_df restriction on number of
## rows to show (but head() is).
if (require(tibble)) {
iris2 <- as_tibble(iris)
class(iris2)
headtail(iris2,n=15)
head(iris2,n=15)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.