[R] Fine control of plot

[Sarah Goslee]

Okay, so what you really want to do is be able to set a wide right
margin and draw some segments there? Using layout() is not the best
way to go about this: as you've discovered, you can't control the area
assigned.

You can "cheat" with layout(), as in:
layout(matrix(c(1,1,1,2), nrow=1))

but the better way is to see xpd within ?par as described here:
https://stat.ethz.ch/pipermail/r-help/2009-July/206311.html

along with par()$mai to set the margins appropriately.

Sarah

On Tue, Mar 12, 2013 at 3:50 PM, philippe massicotte
<pmassicotte at hotmail.com> wrote:
> Hi and thank you for your answer.
>
> Sorry for the html post, here's the code: (you missed a break line between +x and plot(...)
>
> layout(matrix(c(1,2), 1, 2, byrow = TRUE), widths=c(6,2), heights=c(1,1))
>
> x = 1:100
> y = rnorm(x)+x
> plot(x,y)
>
> reg = lm(y~x)
> abline(reg, col = "red")
>
> plot(1, type="n", axes=F, xlab="", ylab="", xlim = c(-1,1), ylim = c(min(y), max(x)))
> segments(-0.25,min(reg$fitted.values),0.25,min(reg$fitted.values))
> segments(-0.25,max(reg$fitted.values),0.25,max(reg$fitted.values))
> segments(0,min(reg$fitted.values),0,max(reg$fitted.values))
>
> I hope my question is more obvious after you urn this example.
>
> Regards,
> Phil
>
>
>> Date: Tue, 12 Mar 2013 15:33:40 -0400
>> Subject: Re: [R] Fine control of plot
>> From: sarah.goslee at gmail.com
>> To: pmassicotte at hotmail.com
>> CC: r-help at r-project.org
>>
>> Hi,
>>
>> You posted in HTML by mistake, so your code was mangled:
>>
>> > I'm trying to create a graph where I could plot some lines on the right side. Here an example:
>> > layout(matrix(c(1,2), 1, 2, byrow = TRUE), widths=c(6,2), heights=c(1,1))
>> > x = 1:100y = rnorm(x)+xplot(x,y)
>> > reg = lm(y~x)abline(reg, col = "red")
>> > plot(1, type="n", axes=F, xlab="", ylab="", xlim = c(-1,1), ylim = c(min(y), max(x)))segments(-0.25,min(reg$fitted.values),0.25,min(reg$fitted.values))segments(-0.25,max(reg$fitted.values),0.25,max(reg$fitted.values))segments(0,min(reg$fitted.values),0,max(reg$fitted.values))
>>
>> I figured out where the linebreaks go, but I can't run this:
>>
>> y = rnorm(x)+xplot(x,y)
>>
>> What's xplot() doing here?
>>
>> > However, I cant figure out how to make it a bit nicer by removing extra space to the right.
>>
>> Can you explain further what you're trying to do? Plot spacing is
>> controlled with par() for base graphics, but I really don't understand
>> what you're after.


-- 
Sarah Goslee
http://www.functionaldiversity.org