[R] max-min plot

[Antonio Olinto]

Dear R-list members,

Thanks for those who replied my e-mail (Frank, Martin and Uwe) on "max-min
plot".

Following Uwe's suggestion I did my job as showed bellow. This example
should be useful for begginers (like myself).

Thanks,

Antonio

------------------------------

    Year  Value     Z
1  1994 0.15062 Zm
2  1995 0.20622 Zm
3  1996 0.20373 Zm
4  1997 0.22153 Zm
5  1998 0.23426 Zm
6  1999 0.23533 Zm
7  1994 0.14075 Z-
8  1995 0.17051 Z-
9  1996 0.16989 Z-
10 1997 0.18350 Z-
11 1998 0.21494 Z-
12 1999 0.19841 Z-
13 1994 0.16048 Z+
14 1995 0.24193 Z+
15 1996 0.23757 Z+
16 1997 0.25956 Z+
17 1998 0.25357 Z+
18 1999 0.27225 Z+

> plot(Year,Value,type="n",xlab="year",ylab="Z")
> points(Year[c(1:6)],Value[c(1:6)],pch=3)
> segments(Year[c(7)],Value[c(7)],Year[c(13)],Value[c(13)])
> segments(Year[c(8)],Value[c(8)],Year[c(14)],Value[c(14)])
...

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