rep.data.frame {mefa} | R Documentation |
The function inflates a data frame based on count values in a vector corresponding the rows.
## S3 method for class 'data.frame': rep(x, ...)
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). |
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
.
A data frame with columns as in the original (x
) and e.g. sum(times)
number of rows.
P'eter S'olymos, solymos@ualberta.ca
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/
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)