[R] Question about coplot() ...

[C. Joseph Lu]

Dear R-friends,

For the following data:

> xy
     x     y i
1  731 0.313 2
2  739 0.340 2
3  790 0.373 2
4  855 0.451 2
5  980 0.608 2
6  575 0.156 1
7  608 0.207 1
8  630 0.249 1
9  670 0.332 1
10 838 0.377 1
11 964 0.466 1

> coplot(y ~ x|i, data=xy)
coplot gives 3 panels, rather than 2, namely one for i=1 and one for
i=2.

Futhermore, when I extand data fram xy to have i=3 as follows:

> xy
     x     y i
1  334 0.129 3
2  365 0.198 3
3  411 0.223 3
4  731 0.313 2
5  739 0.340 2
6  790 0.373 2
7  855 0.451 2
8  980 0.608 2
9  575 0.156 1
10 608 0.207 1
11 630 0.249 1
12 670 0.332 1
13 838 0.377 1
14 964 0.466 1

> coplot(y ~ x | i, data=xy)
gives 4 panels, rather than 3.

Is this appropriate (with default settings of coplot)?

Best regards,

C. Joseph Lu
Department of Statistics
National Cheng-Kung University
Tainan, Taiwan

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._