[R] How to do a pretty panel plot?

[DKOD]

Ajay Shah wrote:
> 
> The pretty picture that I saw at:
>  
> http://chartsgraphs.wordpress.com/2009/02/09/r-panel-chart-beats-excel-chart/#more-1096
> inspired me to try something similar. The code that I wrote is:
> 
> ------snipsnip---------------------------------------------------------------------
> M <- structure(list(date = structure(c(13634, 13665, 13695, 13726, 
> 13757, 13787, 13818, 13848, 13879, 13910, 13939, 13970, 14000, 
> 14031, 14061, 14092, 14123, 14153, 14184, 14214, 14245, 14276, 
> 14304, 14335), class = "Date"), cospi = c(1987.31, 2033.37, 2140.13, 
> 2120.66, 2427.09, 2917.7, 2915.28, 3262.06, 2616.26, 2617.75, 
> 2277.69, 2538.13, 2374.09, 1911.22, 2063.73, 2081.28, 1813.58, 
> 1304.96, 1219.73, 1361.74, 1299.2, 1242.74, 1339.18, 1557.29), 
>     cospi.PE = c(19.2, 19.69, 20.13, 24.08, 27.61, 30.9, 30.69, 
>     34.92, 26.95, 27.63, 23.86, 26.14, 23.72, 19.5, 23.43, 23.73, 
>     20.69, 16.4, 16.12, 18.04, 18.46, 18.86, 20.24, 23.53)), .Names =
> c("date", 
> "cospi", "cospi.PE"), row.names = 209:232, class = "data.frame")
> 
> par(mfrow=c(2,1))           # try to get two plots, one above the other
> 
> plot(M$date, M$cospi, type="l", col="darkgrey", log="y",
>      xaxs="i", yaxs="i", axes=FALSE,
>      ylab="Cospi level")
> axis(1, col="lightgrey", at=NULL, labels=FALSE)
> axis(2, col="lightgrey", labels=TRUE)
> 
> plot(M$date, M$cospi.PE, type="l", col="darkgrey", log="y",
>      xaxs="i", yaxs="i", axes=FALSE,
>      ylab="Cospi P/E")
> axis(2, col="lightgrey", at=NULL, labels=TRUE)
> axis(1, col="lightgrey", at=NULL, labels=TRUE)
> ------snipsnip---------------------------------------------------------------------
> 
> and this is clearly all wrong.
> 
> * It's supposed to look like one rectangle inside which are two
>   plots. Instead it looks like two separate plots.
> 
> * The x axis is Dates and the axis labelling doesn't get that.
> 
> How do I set about making a pretty panel plot of these two series,
> both of which share a common time axis?
> 
> -- 
> Ajay Shah                                     
> http://www.mayin.org/ajayshah  
> ajayshah at mayin.org                            
> http://ajayshahblog.blogspot.com
> <*(:-? - wizard who doesn't know the answer.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> 

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