[R] ask for data manipulation!
vinkwai wong
0034058 at fudan.edu.cn
Wed Jun 9 16:59:43 CEST 2004
i have such a data:
V1 V2 V3 V4
a b c e
a f d NA
b d e f
h d NA NA
a d f e
¡¡
(V1,V2,V3,V4 can be any one of a, b, c, d, e, f, g, h. that is to say ,it has 8 possible values.)
and i want to change it the the following form:
a b c d e f g h
8 7 6 2.5 5 2.5 2.5 2.5 #2.5is the mean of (4+3+2+1)
8 3 3 6 3 7 3 3 #3 is the mean of (5+4+3+2+1)
2.5 8 2.5 7 6 5 2.5 2.5 #2.5is the mean of (4+3+2+1)
3.5 3.5 3.5 7 3.5 3.5 3.5 8 #3.5is the mean of (6+54+3+2+1)
8 2.5 2.5 7 5 6 2.5 2.5
¡¡
i want to know if there is some easy way to achieve my goal using R?
More information about the R-help
mailing list