[R] [FORGED] Re: [FORGED] How to remove box in Venn plots (Vennerable package, uses grid) - similar to bty="n" in standard plots

[Paul Murrell]

Hi

Glad I could help.

Here's a way you could get rid of the rectangle in the first place ...

library(Vennerable)
groups<-list(set1=1:100, set2=80:120)
V<-Venn(groups)
C<-compute.Venn(V)
X11(w=7,h=7)
grid.newpage()

plot(C, show=list(Universe=FALSE))

It required crawling through the 'Vennerable' source code a bit to find 
that 'show' argument, but that appears to do the trick.

Paul

On 15/11/16 02:08, DE LAS HERAS Jose wrote:
> Hi,
>
>
> The grid.ls() and grid.remove() approach worked beautifully to remove
> the box, thank you! Because the box is the first thing to be drawn, it
> is the first object shown by grid.ls(), so I can easily add a line of
> code to automatically remove the box. Result!
>
>
> Although I'd still like to know how one chooses not to plot that box in
> the first place. I really must study a little the grid package. I've
> survived using base R plots and they work very nicely, but it looks like
> you can do a lot of cool stuff with grid.
>
>
> In case you might know the answer and feel like adding a comment here
> (I'm already very happy with the grid.ls() approach, thanks! :)) this is
> a simple code example without making it look pretty or anything:
>
>
>
>
> library(Vennerable)
> groups<-list(set1=1:100, set2=80:120)
> V<-Venn(groups)
> C<-compute.Venn(V)
> X11(w=7,h=7)
> grid.newpage()
> plot(C)
>
> class(C)
> [1] "VennDrawing"
> attr(,"package")
> [1] "Vennerable"
>
> I don't want the black box around the diagram.
> I was able to overwrite it with a white box like this:
>
> vp=viewport(x=0.5, y=0.5, width=0.95, height=0.75)
> pushViewport(vp)
> grid.rect(gp=gpar(lty=1, col="white", lwd=15))
> upViewport() # needs to be executed to return focus upwards
>
> but as the box has different dimensions depending on the actual sets
> being drawn, the width and height must be found empirically each time. A
> bit boring it you need to produce a bunch of figures at once.
>
> I was wondering what parameter I could include in the call to 'plot'
> that would prevent the box from being drawn. Usually this is achieved
> with bty="n", but the method for plotting a "VennDrawing" structure uses
> the grid package and I'm lost there at the moment.
>
> Thank you for your help again, grid.ls() etc is a very cool and
> flexible approach
>
> Jose
>
>
>
>
> ------------------------------------------------------------------------
> *From:* Paul Murrell <paul at stat.auckland.ac.nz>
> *Sent:* 13 November 2016 19:57
> *To:* DE LAS HERAS Jose; R-help at r-project.org
> *Subject:* Re: [FORGED] [R] How to remove box in Venn plots (Vennerable
> package, uses grid) - similar to bty="n" in standard plots
>
> Hi
>
> Can you supply some example code?
>
> You might get some joy from grid.ls() to identify the box followed by
> grid.remove() to get rid of it;  some example code would allow me to
> provide more detailed advice.
>
> Paul
>
> On 12/11/16 05:12, DE LAS HERAS Jose wrote:
>> I'm using the package Vennerable to make Venn diagrams, but it always
>> makes a box around the diagram.
>>
>> Using standard R plots I could eliminate that by indicating
>>
>>
>> bty="n"
>>
>>
>> but it seems Vennerable uses the Grid package to generate its plots
>> and I'm not really familiar enough with Grid. I was looking at the
>> documentation but I can't seem to find a way to achieve that. I'd
>> even be happy drawing a white rectangle with wide lines to overplot
>> the box, but there must be a way to not draw the box in the first
>> place.
>>
>>
>> Anybody knows how?
>>
>>
>> Jose
>>
>> --
>>
>> Dr. Jose I. de las Heras The Wellcome Trust Centre for Cell Biology
>> Swann Building Max Born Crescent University of Edinburgh Edinburgh
>> EH9 3BF UK
>>
>> Phone: +44 (0)131 6507090
>>
>> Fax:  +44 (0)131 6507360
>>
>>
>>
>> The University of Edinburgh is a charitable body, registered in
>> Scotland, with registration number SC005336.
>>
>>
>>
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> --
> Dr Paul Murrell
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-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/