[R] plot.new() and grid functions in multipage pdfs

[Ali Tofigh]

my problem is that I usually have no choice but to mix grid and base
graphics. I use grid as much as possible, but for example for plotting
dendrograms, I don't know how to plot them other than using base
graphics. So I use the functions in gridBase to produce those plots.
In order to do that I have to call plot.new() at some point in my code
to initialize the base graphics, and that can mess things up.

/ali


On Tue, Oct 9, 2012 at 4:00 PM, Greg Snow <538280 at gmail.com> wrote:
> The plot.new function is for base graphics and base and grid graphics
> don't usually play well together.  You probably want to use
> grid.newpage function instead.
>
> On Tue, Oct 9, 2012 at 1:26 PM, Ali Tofigh <alix.tofigh at gmail.com> wrote:
>> Hi,
>>
>> when using the grid package, I've come across this weird behaviour
>> where a call to plot.new() will start a new page for a multi-page pdf,
>> but then the margins will somehow behave strangely for all but the
>> first page: here is some code:
>>
>> pdf("test.pdf"); plot.new(); grid.rect(gp = gpar(fill="blue"));
>> plot.new();  grid.rect(gp = gpar(fill="blue")); dev.off()
>>
>> The first page is filled completely with a blue rectangle, but in the
>> second page, the margins clip the rectangle. This is causing me
>> considerable headache, as I rely on many grid functions for plotting.
>> This seems like a bug to me, or is there something about the behaviour
>> of plot.new() and/or grid functions that I don't understand?
>>
>> /Ali
>>
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>
>
>
> --
> Gregory (Greg) L. Snow Ph.D.
> 538280 at gmail.com