Description Usage Arguments Details Value Examples
Drop zero-sum rows or columns from a species abundance matrix, often needed before calculating dissimilarities.
1 | mx_dropzero(x, method = "col", silent = TRUE, ...)
|
x |
array of species data, where rows = SUs and cols = species |
method |
either one of |
silent |
logical, do not report number of rows or columns dropped? |
... |
further arguments passed to other methods |
Often useful before calculating certain dissimilarity measures.
Modified dataframe or matrix, with fewer rows or columns than the original.
1 2 3 4 5 6 7 8 9 10 11 | # species abundance data
set.seed(1917)
spe <- data.frame(matrix(rnorm(30, 10, 50), 10, 3))
spe[spe < 0] <- 0
colnames(spe) <- c('Acer rubrum','Acer saccharum','Acer negundo')
spe
mx_dropzero(spe) # returns unchanged abundance matrix or data.frame
spe[,2] <- 0
spe[4,] <- 0
mx_dropzero(spe, 'col') # second column removed
mx_dropzero(spe, 'row') # fourth row removed
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.