peek | R Documentation |
Shows the first, last, and approximately evenly spaced rows from a data frame or matrix.
peek(x, n = 20L, which = NULL, addrownums = TRUE)
x |
A data frame or matrix. |
n |
A single numeric that indicates the number of rows to display. |
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. |
A matrix or data.frame with n rows.
If n
is larger than the number of rows in x
then all of x
is displayed.
Derek H. Ogle, DerekOgle51@gmail.com
A. Powell Wheeler, powell.wheeler@gmail.com
headtail
peek(CutthroatAL)
peek(CutthroatAL,n=6)
peek(CutthroatAL,n=6,which=c("id","y1998","y1999","y2000"))
## Make a matrix for demonstration purposes only
mCutthroatAL <- as.matrix(CutthroatAL)
peek(mCutthroatAL)
peek(mCutthroatAL,n=6)
peek(mCutthroatAL,n=6,addrownums=FALSE)
peek(mCutthroatAL,n=6,which=2:4)
## Make a tibble type from dplyr ... note how peek() is not limited by
## the tibble restriction on number of rows to show (but head() is).
## Not run:
if (require(dplyr)) {
CutthroatAL2 <- as_tibble(CutthroatAL)
class(CutthroatAL2)
peek(CutthroatAL2,n=6)
head(CutthroatAL2,n=15)
}
## End(Not run)
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