Displaying 3 results from an estimated 3 matches for "species5".
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2010 Nov 05
3
table with values as dots in increasing sizes
I was just thinking of a way to present data and if it is possible in R.
I have a data frame that looks as follows (this is just mockup data).
df
location,"species1","species2","species3","species4","species5"
"loc1",0.44,0.28,0.37,-0.24,0.41
"loc2",0.54,0.62,0.34,0.52,0.71
"loc3",-0.33,0.75,-0.34,0.48,0.61
location is a factor while all the species are numerical vectors.
I would like to present this as a table (or something that looks like a
table) but instead of th...
2011 Jul 29
1
Using perm.t.test() upon Matrix/Dataframe columns parted by factor instead of t.test()
...deducer. Have fun with this trivial undergraduate
problem.
Code:
c(rep("A", 5), rep("B", 5))->Faktor
matrix(rnorm(100, mean=20, sd=4), nrow=10, ncol=10)->M
colnames(M) <- c("species1","species2",
"species3","species4","species5","species6","species7","species8","species9",
"species10")
###Conventional T-Test to test for differences of each species per factor
lapply(
M, function(x)
t.test(x~ Faktor)
)
###Trying it for perm.t.test without the helpful formul...
2005 Nov 03
4
merging dataframes
Dear List,
I often have to merge two or more data frames containing unique row
names but with some columns (names) common to the two data frames and
some columns not common. This toy example will explain the kind of setup
I am talking about:
mat1 <- as.data.frame(matrix(rnorm(20), nrow = 5))
mat2 <- as.data.frame(matrix(rnorm(20), nrow = 4))
rownames(mat1) <- paste("site",