Dear list members,
I have two data sets (sites by species) with some sites in common, one with
invertebrate data (X) and one with diatoms data (Y). I would like to get both
new Xc and Yc matrices showing only those sites common to X and Y, to make
similarity matrices and perform a mantel
Here's one way.
# create matrices x and y with some sites in common
x - matrix(1, 4, 2) ; rownames(x) - letters[1:4]
y - matrix(1, 4, 2) ; rownames(y) - letters[3:6]
# identify which sites are in common for x and y
xcommon - rownames(x) %in% rownames(y)
ycommon - rownames(y) %in% rownames(x)
#
Etienne Laliberté wrote:
Here's one way.
# create matrices x and y with some sites in common
x - matrix(1, 4, 2) ; rownames(x) - letters[1:4]
y - matrix(1, 4, 2) ; rownames(y) - letters[3:6]
# identify which sites are in common for x and y
xcommon - rownames(x) %in% rownames(y)
ycommon -
Hi all, I am relatively new to R and am having problems modelling my data. I
sampled a single salamander species along streams (Sites, random effect, n=16)
over five months (fixed effect) with three methods (TRMT, fixed effect).
Snout-to-vent length (SVL) was measured and salamanders (each
On 03/17/2011 06:27 PM, Gabe Strain wrote:
Hi all, I am relatively new to R and am having problems modelling my
data. I sampled a single salamander species along streams (Sites,
random effect, n=16) over five months (fixed effect) with three
methods (TRMT, fixed effect).
Philosophically,
