Displaying 2 results from an estimated 2 matches for "elemconc".
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elemcnt
2011 Dec 08
1
How to plot multiple graphs in one go?
I am trying to do this, but it won't work:
> library(lattice)
> elemconc = data.frame(expand.grid(id=1:20, geno=c('exp', 'wt'),
region=c('cor', 'cr', 'spine'), elem=c('fe', 'cu', 'zn')), conc=rnorm(360,
10))
> elemconc$geno = factor(elemconc$geno)
> elemconc$region = factor(elemconc$region)
> for (...
2011 Dec 04
1
Complex multiple t tests in a data frame with several id factors
...tions of various metal elements in
different anatomic regions of two strains of mice. Now, for each
element, in each region, I want to do a t test to find whether there
is any difference between the two strains.
Here is what I did (using simulated data as an example):
# create the data frame
> elemconc = data.frame(expand.grid(id=1:3, geno=c('exp', 'wt'), region=c('brain', 'spine'), elem=c('fe', 'cu', 'zn')), conc=rnorm(36, 10))
> elemconc
id geno region elem conc
1 1 exp brain fe 8.497498
2 2 exp brain fe 9.280944
3...