[R] multiple lines on multiple plots

[baptiste auguie]

Hi,

ggplot2 automatically adjusts its axes when new data are added to
plots; however you wouldn't get an automatic legend if you constructed
plots that way.

HTH,

baptiste

On 13 April 2011 17:06, James Annan <jdannan at jamstec.go.jp> wrote:
> Thanks for all the replies. Yes, I agree that calculating all the data first
> is a simple solution which also has the benefit of making the axis choice
> easier to get right, but on the downside it requires storing an order of
> magnitude more output than my original sequential approach would have done.
> Not actually a problem for me right now, but may be for larger cases and
> certainly seems inelegant in general. So I'm still interested to know if
> there is some practical way of returning to an earlier plot. I suppose I
> could artificially scale the data to make it match the wrong axes. But that
> would be horrible.
>
> (The example was deliberately simple, but in reality I want to loop through
> a bunch of simple simulations each of which generates several types of
> output, and create a graph for each type of output.)
>
> James
>
> On 13/4/11 1:25 AM, jim holtman wrote:
>>
>> Instead of trying to go back to a previous plot, gather up all the
>> data for the plots and generate each one with the appropriate data.
>> This is much easier than trying to keep track of what the dimensions
>> are.  Also if the data you want to add is outside the plot, then you
>> have issues with clipping; knowing what the dimensions of all the data
>> you want to plot is a reasonable way to go.
>>
>> On Tue, Apr 12, 2011 at 9:30 AM, James Annan<jdannan at jamstec.go.jp>
>>  wrote:
>>>
>>> I'm sure this must be trivial, but I'm a novice with R and can't work out
>>> how to handle the axes when I am constructing multiple plots on a page
>>> and
>>> try to return to a previous one to put multiple data sets it.
>>>
>>> A simple example:
>>> ---
>>> x<- 1:10
>>> y<- (1:100)*3
>>> par(mfcol=c(2,1))
>>> plot(x)
>>> plot(y)
>>>
>>> par(mfg=c(1,1))
>>> lines(x)
>>> ---
>>>
>>> The first 5 lines make two plots with a row of dots along the diagonal of
>>> each. I intended the last two statements to add a line to the first plot,
>>> that runs along the same data points already plotted there. However,
>>> although the commands add a line to the top plot, it is clearly using the
>>> axis dimensions of the lower plot. Can someone tell me how to get it to
>>> use
>>> the axes that are already there?
>>>
>>> Variants like lines(x,xlim=c(1,10)) have no effect.
>>>
>>> Thanks in advance for any help.
>>>
>>> James
>>> --
>>> James D Annan jdannan at jamstec.go.jp Tel: +81-45-778-5618 (Fax 5707)
>>> Senior Scientist, Research Institute for Global Change, JAMSTEC
>>> (The Institute formerly known as Frontier)
>>> Yokohama Institute for Earth Sciences, 3173-25 Showamachi,
>>> Kanazawa-ku, Yokohama City, Kanagawa, 236-0001 Japan
>>> http://www.jamstec.go.jp/frcgc/research/d5/jdannan/
>>>
>>> ______________________________________________
>>> 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.
>>>
>>
>>
>>
>
>
> --
> James D Annan jdannan at jamstec.go.jp Tel: +81-45-778-5618 (Fax 5707)
> Senior Scientist, Research Institute for Global Change, JAMSTEC
> (The Institute formerly known as Frontier)
> Yokohama Institute for Earth Sciences, 3173-25 Showamachi,
> Kanazawa-ku, Yokohama City, Kanagawa, 236-0001 Japan
> http://www.jamstec.go.jp/frcgc/research/d5/jdannan/
>
> ______________________________________________
> 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.
>