relevance (version 2.1)

showd: Show a Part of a Data.frame

Description

Shows a part of the data.frame which allows for grasping the nature of the data. The function is typically used to make sure that the data is what was desired and to grasp the nature of the variables in the phase of getting acquainted with the data.

Usage

showd(data, first = 3, nrow. = 4, ncol. = NULL, digits=getOption("digits"))

Value

returns invisibly the character vector containing the formatted data

Arguments

data

a data.frame, a matrix, or a vector

first

the first first rows will be shown and ...

nrow.

a selection of nrow. rows will be shown in addition. They will be selected with equal row number differences. The last row is always included.

ncol.

number of columns (variables) to be shown. The first and last columns will also be included. If ncol. has more than one element, it is used to identify the columns directly.

digits

number of significant digits used in formatting numbers

Author

Werner A. Stahel, ETH Zurich

See Also

head and tail.

Examples

showd(iris)

data(d.blast)
names(d.blast)
## only show 3 columns, including the first and last
showd(d.blast, ncol=3)  

showd(cbind(1:100))