[R] Scatter plot / LOESS, or LOWESS for more than one parameter
R. Michael Weylandt
michael.weylandt at gmail.com
Tue Apr 24 06:40:43 CEST 2012
The scatter plot is easy:
plot(pH1 ~ pH2, data = OBJ)
When you say a loess for each -- how do you break them up? Are there
repeat values for pH1? If so, this might be hard to do in base
graphics, but ggplot2 would make it easy:
ggplot(OBJ, aes(x = pH1, y = pH2)) + geom_point() + stat_smooth() +
or something similar.
On Mon, Apr 23, 2012 at 11:26 PM, David Doyle <kydaviddoyle at gmail.com> wrote:
> Hi folks.
> If I have the following in my "data"
> event pH1 pH2
> 1 4.0 6.0
> 2 4.3 5.9
> 3 4.1 6.1
> 4 4.0 5.9
> and on and on..... for about 400 events
> Is there a way I can get R to plot event vs. pH1 and event vs. pH2 and
> then do a loess or lowess line for each??
> Thanks in advance
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