On Thu, Mar 15, 2012 at 10:25 PM, Richard M. Heiberger wrote:
> ## I would like help in using variable values in plotmath expressions
> ## in lattice
>
> x <- 1:10
> y <- 1:10
> pval <- .95
>
> plot(y ~ x, ## works as I want in base graphics
> main=substitute(list(alpha * " = " * group("",list
Hi Rich,
I'm not sure if you have a reason outside this toy example to want to
be using list() and group(), but if not I would go with this:
xyplot(y ~ x, main = substitute(expression(alpha == p), list(p = pval)))
Hope this helps,
Josh
On Thu, Mar 15, 2012 at 7:25 PM, Richard M. Heiberger wro
## I would like help in using variable values in plotmath expressions
## in lattice
x <- 1:10
y <- 1:10
pval <- .95
plot(y ~ x, ## works as I want in base graphics
main=substitute(list(alpha * " = " * group("",list(p),"")),
list(p=pval)))
plot(y ~ x, ## doesn't work as intended: "pval" is d
Step 1: Read the R-FAQ 7.31:
Step 2: Ask yourself whether it is likely that such a small value can
be sensibly distinguished from zero using a program that stores values
in double precision.
Step 3: Consider alternate methods, perhaps logarithms or programs
that are equipped to deal with
Hi all,
I was working with some probabilities and wanted to store some small values.
For example:
> x = 2e-250
> x
[1] 2e-250
> y = 2e-300
> y
[1] 2e-300
> z = 2e-350
> z
[1] 0
Is there any way to store a small value (e.g. 2e-350) in R?
thanks!
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