# Create a matrix of ball locations
# You'd do this using the calls within your points function
balls - matrix(c(0,50,25,-150,-100,-50), ncol=2, byrow=F)
# Draw a line from the origin to each ball location
apply(balls, 1, function(x) lines(c(125, x[1]), c(-210, x[2]), col='red'))
A more
a - 1:3
b - 11:13
c - 21:23
names - c('a','b','c')
do.call(data.frame, list(sapply(names, function(x) get(x
runner wrote:
What I am trying to do is as follows:
- I have listed names of all wanted objects (datasets A,B,C... ) in
current workspace as a vector:
obj -
A simple example (avoiding using dates, just to show the principle) - this
assumes that your data are already sorted (?order).
temp - data.frame(subject = rep(1:2, each = 5), response = 1:10)
print(temp)
last - do.call(rbind, by(temp, temp$subject, function(x) tail(x, 1)))
print(last)
By
my.data - data.frame(
trts - rep(c('Drug 1','Drug2'), each = 10),
doses - rep(c('Low dose','High dose'), 10),
resp - rnorm(20)
)
tapply(my.data$resp, list(my.data$trts, my.data$doses), mean)
Jim
Afshartous, David wrote:
All,
Is there an efficient way to
Hi,
I have recently been playing with the grid package in an attempt to create
some pages containing multiple lattice plots on the same page. However, when
I specify a grid layout with different widths, such as:
pushViewport(viewport(layout = grid.layout(1, 2, unit(c(2, 1), null
the
