Hello,
How can I randomly sample individuals within a sites from a site (row) X
species abundance (column) data frame or matrix? As an example, the matrix
"abund2" made below.
##### (sorry, Im a newbie and this is the only way I know to get an example
on here)
abund1 <- c(150, 300, 0, 360, 150, 300, 0, 240, 150, 0, 60,
0, 150, 0, 540, 0, 0, 300, 0, 240, 300, 300, 0, 360, 300, 0, 600, 0)
abund2 <- matrix(data=abund1, nrow=4, ncol=7)
colnames(abund2) <- c("spA", "spB", "spC", "spD", "spa", "spF", "spG")
rownames(abund2)<-c("site1", "site2", "site3", "site4")
#####
> abund2
spA spB spC spD spa spF spG
site1 150 150 150 150 0 300 300
site2 300 300 0 0 300 300 0
site3 0 0 60 540 0 0 600
site4 360 240 0 0 240 360 0
How can I make a random subsample of 100 individuals from the abundances
given for each site?
This is probably really easy.
Thanks.
Bubba
--
View this message in context:
http://r.789695.n4.nabble.com/Subsampling-out-of-site-abundance-matrix-tp3263148p3263148.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
