probability from different values
Hello Ricardo, another solution could be using package distr: library(distr) A <- c(18,18,18,19,20,21,22,23,24,25,26,27,28) DA <- DiscreteDistribution(A) # maybe # support(DA) # plot (DA) B <- c(82,83,84,85,85,86,87,88,89,90,91,91,92) DB <- DiscreteDistribution(B) # support(DB) # plot(DB) DC <- DB - DA# convolution with of DB with (-DA) # support(DC) # plot(DC) hth, Matthias
Richard.Cotton at hsl.gov.uk wrote:
i have two vectors (A and B) and i need create another vector (C)
from the subtraction of A's values with the B's values. How can i
estimate the probability of C's values if i have differents values
combinations of A and B that can result in the same value? like 90
-20 = 70 and 91 - 21 = 70.
example:
B = {18 18 18 19 20 21 22 23 24
25 26 27 28....}
A = {82 83 84 85 85 86 87 88 89
90 91 91 92 ....}
Try this:
A = c(18,18,18,19,20,21,22,23,24,25,26,27,28)
B = c(82,83,84,85,85,86,87,88,89,90,91,91,92)
lenA = length(A)
lenB = length(B)
AA = rep(A, lenB)
BB = rep(B, each=lenA)
table(AA-BB)/(lenA*lenB)
Regards,
Richie.
Mathematical Sciences Unit
HSL
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