fill.na: Replace <NA> Values with Nearest Above Values
In mefa: Multivariate Data Handling in Ecology and Biogeography

Description Usage Arguments Details Value Note Author(s) References See Also Examples

The function replaces <NA> values with the nearest values above them in the same column.

1	fill.na(x)

`x`	a vector, a matrix or a data frame.

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.

A matrix or a data frame.

This function is not vectorized, so can be a bit slow for large data sets.

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/

stcs

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))

mefa 3.2-7 	 2016-01-11
  samp taxa count   segm
1   s1   t1     1   male
2 <NA> <NA>     2 female
3   s2   s1    10   male
4 <NA>   s2     3 female
5   s3   s3     4   male
6   s4 <NA>     1   male
  samp taxa count   segm
1   s1   t1     1   male
2   s1   t1     2 female
3   s2   s1    10   male
4   s2   s2     3 female
5   s3   s3     4   male
6   s4   s3     1   male
[1] 1 2 3 4 4