Re: [R] Plotting three time series on the same graph

From: <tolga.i.uzuner_at_jpmorgan.com>
Date: Mon, 30 Jun 2008 12:06:22 +0100


Thanks Romain for trying to help, but my issue is that I have three time series, not two, so at least two of them would have to go on the same side.

There may be no solution to this problem in R but if there is, would appreciate hearing about it from someone ?

Figure 1 in this link shows what I am trying to achieve: http://www.aditus.nu/jpgraph/howto04.php

Thanks anyway,
Tolga

Romain Francois <rfrancois_at_mango-solutions.com> 30/06/2008 10:51

To
tolga.i.uzuner_at_jpmorgan.com
cc
Matt Aldridge <maldridge_at_mango-solutions.com> Subject
Re: [R] Plotting three time series on the same graph

Hello Tolga,

I am not sure what you are looking for is achievable easily, however, you can have an axis on the left and another on the right. Look at the side argument of the axis function. Would the following code work for you:

# generating some data

y <- 1:100 + runif( 100, min = -10, max = 10 )
x <- 1:100 + runif( 100, min = -10, max = 10 )
z <- seq( 70000, 25000, length.out = 100) + runif( 100, min = -2000, max 
= 2000)

# prettier version of lines
.myLines <- function(x,y, col = "blue", lwd = 2, ...){   lines( x,y,col = "black", lwd=2 + lwd)   lines( x,y,col = col, lwd=lwd, ...)
}

# transform from the scale c(25000,70000) to (0,100) transform <- function( data ){
  ( data - 25000 ) / ( 70000 - 25000 ) * 100 }

par( mar = c(5,4,4,4)+.1 )
plot( 1:100, x , type = "n", las = 1 )
axs <- pretty( c(25000, 70000), n = 5 )
abline( h = transform(axs), col = "gray")

.myLines( 1:100, x, col = "red" )
.myLines( 1:100, y, col = "blue" )
.myLines( 1:100, transform(z), col = "green" )
axis( 4, transform(axs), axs, las = 1 )

Best Regards,

Romain Francois

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tolga.i.uzuner_at_jpmorgan.com wrote:

> Dear R Users,
>
> I would like to plot three time series on the same graph, two axis on
the
> left and one axis on the right.
>
> The time series that I am graphing on the left do not share a similar
> scale: one has a range of 1:100 and the other a range of 25000:70000.
How
> can I display the tick marks for both on the left hand side without
> superimposing them, i.e. one set of tick marks in black right up on the
> edge of the plot and another set of tick marks in red placed further to
> the left so that the tick marks and axis identifiers do not sit on top
of
> each other ?
>
> Many thanks in advance,
> Tolga
>
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