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ela
2012 Jul 18
6
taylor expansions with real vectors
Dear list,
I have a big deal concerning the development of a Taylor expansion.
require(Matrix)
e1 <- as.vector(1:5)
e2 <- as.vector(6:10)
in order to obtain all the combinations between these two vectors following
a Taylor expansion (or more simply through a Maclaurin series) for real
numbers.
We have f(x) = f(0) + f'(0)(x-0) + f''(0)(x-0)^2/2! + ? + f^(k)(0)(x-0)^k/k!
2006 Nov 09
1
plot pch
Dear All,
I have a data as follows:
ID <- 1:100
Y <- rnorm(100)
X <- rnorm(100)
type <- as.factor(rep(1:3,100,time=1))
df <- as.data.frame(cbind(ID, Y,X,type))
I want to plot Y versus X by specifying the pch to be as follows:
Subjects having type = 1 must be plotted with a character pch = "A"
Subjects having type = 2 must be plotted