Hello
I have this problem. I have a large matrix of this sort:
> prova
[,1] [,2] [,3] [,4]
[1,] 3 3 3 3
[2,] 3 3 3 1
[3,] 1 3 3 3
[4,] 1 1 1 3
[5,] 3 1 1 3
[6,] 3 1 1 3
[7,] 1 3 1 3
[8,] 1 3 3 3
What I want to do is to count the number of
sequences of ones and stack the results in a
vector, which I will subsequently use to build an istogram (or a density)
I mean: in the matrix "prova" I have two
sequences of length two in column 1, one sequence
of length three in column 2, one sequence of
length four in column 3 and one sequence of
length one in column 4. (I know I can actually
turn the matrix into a vector by using rep(prova))
I would like to get to a vector such as : xx = [1,2,1,1]
Can anyone help?
Thanks!
Mario
===============================
Andrea Mario Lavezzi
Dipartimento di Studi su Politica Diritto e SocietÃ
Piazza Bologni 8
90134 Palermo
tel. ++39 091 6625600
fax ++39 091 6112023
skype: lavezzimario
email: [EMAIL PROTECTED]
web: http://www.unipa.it/~lavezzi
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