R help - Dec 2004 - Returning to normal after call to layout()

Hi

I have a function which draws a plot, using the layout() function to
divide the screen into two parts.  The function works fine, but then my
next call to plot() draws the plot in the first section of the plot I've
just drawn using layout() - whereas what I want it to do is create a new
plot.

I tried using dev.off() but that just closes the layout plot window,
which is not what I want.  So my question is - after using the layout()
function, "layout(matrix(c(1,2), 2, 1))", how do I tell R that the
next
call to a plotting function should use a new window, and not the layout
window?  I've looked in ?layout but there doesn't seem to be anything in
there.

Thanks
Mick

On 10 Dec 2004 at 11:47, michael watson (IAH-C) wrote:
> Hi
> 
> I have a function which draws a plot, using the layout() function to
> divide the screen into two parts.  The function works fine, but then
> my next call to plot() draws the plot in the first section of the plot
> I've just drawn using layout() - whereas what I want it to do is
> create a new plot.
> 
> I tried using dev.off() but that just closes the layout plot window,
> which is not what I want.  So my question is - after using the
> layout() function, "layout(matrix(c(1,2), 2, 1))", how do I tell
R
Hi

what is wrong on this:

layout(matrix(c(1,2), 2, 1))
plot(1,1)
plot(1,2)
windows() #opens the new graphic device see ?device, ?windows
plot(1,3)

BTW did you read my previous post to your question about legend 
on a new window?

Cheers
Petr

> that the next call to a plotting function should use a new window, and
> not the layout window?  I've looked in ?layout but there doesn't
seem
> to be anything in there.
> 
> Thanks
> Mick
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
Petr Pikal
petr.pikal at precheza.cz

Hi Petr

Yes thanks I did get your response and it was helpful.  However, I have
now resorted to using barplot() to draw a legend (as all I wanted was
colored boxes and text) and it works very well for my needs.

Basically, with layout() I'm not getting what I would expect, which may
be a problem with my expectation rather than anything else.  Like I say,
I have a function which draws a plot, using layout to divide the
plotting region into top and bottom.  Fine.  If the user calls my
function, and then another plotting function, I would expect the new
plotting function to overwrite the whole of the old plot - but it
doesn't, it draws the new plot in the top half of the old plot, and
clears the bottom plot.  So what I want is something which says, after
calling layout(), "OK, I'm done plotting in two different regions, I
want you to treat the current device as a single region again".

In a previous package I wrote, when using split.screen() to divide up
the plotting region, dev.off() could be used for this purpose.  But
dev.off() closes the window/plot that I created using layout().

Mick

-----Original Message-----
From: Petr Pikal [mailto:petr.pikal at precheza.cz] 
Sent: 10 December 2004 12:12
To: michael watson (IAH-C)
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] Returning to normal after call to layout()




On 10 Dec 2004 at 11:47, michael watson (IAH-C) wrote:
> Hi
> 
> I have a function which draws a plot, using the layout() function to 
> divide the screen into two parts.  The function works fine, but then 
> my next call to plot() draws the plot in the first section of the plot
> I've just drawn using layout() - whereas what I want it to do is 
> create a new plot.
> 
> I tried using dev.off() but that just closes the layout plot window, 
> which is not what I want.  So my question is - after using the
> layout() function, "layout(matrix(c(1,2), 2, 1))", how do I tell
R
Hi

what is wrong on this:

layout(matrix(c(1,2), 2, 1))
plot(1,1)
plot(1,2)
windows() #opens the new graphic device see ?device, ?windows
plot(1,3)

BTW did you read my previous post to your question about legend 
on a new window?

Cheers
Petr

> that the next call to a plotting function should use a new window, and
> not the layout window?  I've looked in ?layout but there doesn't
seem
> to be anything in there.
> 
> Thanks
> Mick
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list 
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! 
> http://www.R-project.org/posting-guide.html
Petr Pikal
petr.pikal at precheza.cz