Displaying 4 results from an estimated 4 matches for "suggetsions".
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2008 Jul 01
5
WIERD: Basic computing in R
...enlighten me as to why the following happens?
> -2.7^8.6
[1] -5125.407
> p<- -2.7
> q<- 8.6
> p^q
[1] NaN
R seems perfectly able to calculate -2.7^8.6, but fails when the exact same values are assigned to variables and then the computation is repeated.
Thanks in advance for any suggetsions.
Kris.
2005 Dec 21
2
Newbie - Summarize function
...have been trying
to use the "summarize" function within the Hmisc library but I am getting
the following error "Error in eval(expr, envir, enclos) : numeric 'envir'
arg not of length one In addition: Warning message: no finite arguments to
max; returning -Inf".
Any suggetsions on how I can fix this would be greatly appreciated.
Kind regards
Andrew
test <- read.table("test.csv", header=TRUE, sep=",")
#function to calculate mean of "top" elements within a plot
> g<-function(y) {
+ top_no <-max(y$top)
+ weight <- with(y,as.num...
2010 Nov 21
1
solve nonlinear equation using BBsolve
Hi r-users,
I would like to solve system of nonlinear equation using BBsolve function and
below is my code. I have 4 parameters and I have 4 eqns.
mgf_gammasum <- function(p)
{
t <- rep(NA, length(p))
mn <- 142.36
vr <- 9335.69
sk <- 0.8139635
kur <- 3.252591
rh <- 0.896
# cumulants
k1 <- p[1]*(p[2]+p[3])
k2 <- p[1]*(2*p[2]*p[3]*p[4] +p[2]^2+p[3]^2)
k3 <-
2006 Aug 14
4
Updating a table with Ajax
I''ve been banging my head against the wall trying to update a table
(add/delete rows) using Ajax. It seems simple enough but just doesn''t work
for me. I can get it to work using DIVs instead of a table, but doing the
layout with DIVs is much more cumbersome and I know it works for others with
a table (though I haven''t been able to find an exact example code anywhere).