hello,
i have been using ccf() to look at the correlation between lightning and
electrogamnetic data. for the most part it has worked exactly as expected.
however, i have come across something that puzzles me a bit:
x - c(1, 0, 1, 0, 1, 0)
y - c(0, 0, 0, 0, 0, 0)
ccf(x, x, plot = FALSE)
The denominator holds the variance and since the variance is zero you
get that. Calculate the covariance instead of the correlation:
ccf(x, y, plot = FALSE, type = cov)
On 11/27/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
hello,
i have been using ccf() to look at the correlation
On Mon, 27 Nov 2006, [EMAIL PROTECTED] wrote:
hello,
i have been using ccf() to look at the correlation between lightning and
electrogamnetic data. for the most part it has worked exactly as
expected. however, i have come across something that puzzles me a bit:
x - c(1, 0, 1, 0, 1, 0)
y
