fill.na {mefa} | R Documentation |
Replace <NA> Values with Nearest Above Values
Description
The function replaces <NA>
values with the nearest values above them in the same column.
Usage
fill.na(x)
Arguments
x |
a vector, a matrix or a data frame. |
Details
This function is useful when converting a 'notebook style' data into an 'stcs' object. The 'notebook style' data means that observations are registered in a non-redundant way, e.g. when typing in a spreadsheet.
Value
A matrix or a data frame.
Note
This function is not vectorized, so can be a bit slow for large data sets.
Author(s)
P\'eter S\'olymos, solymos@ualberta.ca
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. doi:10.18637/jss.v029.i08
http://mefa.r-forge.r-project.org/
See Also
Examples
x <- data.frame(
samp = c("s1",NA,"s2",NA,"s3","s4"),
taxa = c("t1",NA,"s1","s2","s3",NA),
count = c(1, 2, 10, 3, 4, 1),
segm = c("male","female","male","female","male","male"))
x
fill.na(x)
fill.na(c(1:4, NA))