rep.data.frame: Inflate (repeat) a Data Frame

In mefa: Multivariate Data Handling in Ecology and Biogeography

Description

The function inflates a data frame based on count values in a vector corresponding the rows.

Usage

## S3 method for class 'data.frame'
rep(x, ...)

Arguments

x	a matrix or data frame, but can be a vector.
...	arguments passed to the function rep, i.e. times, length.out and each (see explanation there).

Details

Each rows of the data frame x will be repeated as many times as the corresponding value in e.g. the vector times. This function is called internally by the function stcs.

Value

A data frame with columns as in the original (x) and e.g. sum(times) number of rows.

Author(s)

P\'eter S\'olymos, [e-mail]

References

S\'olymos P. (2008) mefa: an R package for handling and reporting count data. Community Ecology 9, 125–127.

S\'olymos P. (2009) Processing ecological data in R with the mefa package. Journal of Statistical Software 29(8), 1–28. http://www.jstatsoft.org/v29/i08/

http://mefa.r-forge.r-project.org/

See Also

stcs

Examples

x <- data.frame(sample = LETTERS[c(1,1,2,2,3)],
    species = letters[c(5,5,5,6,7)],
    count = c(1,2,10,3,4), segment = letters[c(8,9,8,9,8)])
x
rep(x[,c(1,2,4)], times = x[,3])
rep(x[,c(1,2,4)], each = 2)

Example output

mefa 3.2-7 	 2016-01-11
  sample species count segment
1      A       e     1       h
2      A       e     2       i
3      B       e    10       h
4      B       f     3       i
5      C       g     4       h
   sample species segment
1       A       e       h
2       A       e       i
3       A       e       i
4       B       e       h
5       B       e       h
6       B       e       h
7       B       e       h
8       B       e       h
9       B       e       h
10      B       e       h
11      B       e       h
12      B       e       h
13      B       e       h
14      B       f       i
15      B       f       i
16      B       f       i
17      C       g       h
18      C       g       h
19      C       g       h
20      C       g       h
   sample species segment
1       A       e       h
2       A       e       h
3       A       e       i
4       A       e       i
5       B       e       h
6       B       e       h
7       B       f       i
8       B       f       i
9       C       g       h
10      C       g       h

mefa documentation built on May 2, 2019, 5 p.m.