[R] plot 2 y axis

[John Kane]

Exel is hardly the epitome of good graphing.  There are a couple of ways to do what you want and Jim has shown you one , but ...

What about using two panels to present the data as in 
opar  <-  par(mfrow = c(2, 1))
plot(dat1$Date, dat1$Weight, col = "red", xlab = "", ylab = "Weight")
plot(dat1$Date, dat1$Height, col = "blue", xlab = "Date", ylab = "Height")
par  <-  opar


John Kane
Kingston ON Canada


> -----Original Message-----
> From: yelin at lbl.gov
> Sent: Tue, 16 Apr 2013 15:35:29 -0700
> To: r-help at r-project.org
> Subject: [R] plot 2 y axis
> 
> Hi,
> 
> I want to plot two variables on the same graph but with two y axis just
> like what you can do in Excel. I searched online that seems like you can
> not achieve that in ggplot. So is there anyway I can do it in a nice way
> in
> basic plot?
> 
> Suppose my data looks like this:
> 
> Weight    Height   Date
> 0.1           0.3        1
> 0.2          0.4        2
> 0.3          0.8        3
> 0.6           1          4
> 
> I want to have"Date"as X axis ,"Weight" as the left y axis and "Height"
> as
> the right y axis.
> 
> Thanks.
> 
> 	[[alternative HTML version deleted]]
> 
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