R help - Jan 2013 - Package: VennDiagram. Error in draw.pairwise.venn Impossible: cross section area too large

Dear list,

When I use VennDiagram package, I got a error as follow:

venn.plot <- draw.pairwise.venn(
area1 = 3186,
area2 = 325,
cross.area = 5880);


Error in draw.pairwise.venn(area1 = 3186, area2 = 325, cross.area = 588) :
  Impossible: cross section area too large.

Does anyone have suggestion?

Thank you.

Fabrice Tourre <fabrice.ciup <at> gmail.com> writes:
> 
> Dear list,
> 
> When I use VennDiagram package, I got a error as follow:
> 
> venn.plot <- draw.pairwise.venn(
> area1 = 3186,
> area2 = 325,
> cross.area = 5880);
> 
> Error in draw.pairwise.venn(area1 = 3186, area2 = 325, cross.area = 588) :
>   Impossible: cross section area too large.
> 
> Does anyone have suggestion?
> 
> Thank you.
> 
> 
  I don't know the package, but it looks like you're trying to 
draw two bubbles with areas of 3186 and 325.  cross.area sounds like
the area of the intersection.  You can't have an area of intersection
that's bigger than one of the categories ...

Hi Fabrice,

The cross.area parameter gives the size of the intersection, which cannot be
larger than the size of either set 1 (area1 parameter) or set 2 (area2
parameter).  You probably want:
venn.plot <- draw.pairwise.venn(
area1 = 3186 + 5880,
area2 = 325 + 5880,
cross.area = 5880);

Paul


-----Original Message-----
From: hiekeen at gmail.com [mailto:hiekeen at gmail.com] On Behalf Of Fabrice
Tourre
Sent: January-27-13 5:06 PM
To: r-help at r-project.org
Cc: Paul Boutros
Subject: Package: VennDiagram. Error in draw.pairwise.venn Impossible: cross
section area too large

Dear list,

When I use VennDiagram package, I got a error as follow:

venn.plot <- draw.pairwise.venn(
area1 = 3186,
area2 = 325,
cross.area = 5880);


Error in draw.pairwise.venn(area1 = 3186, area2 = 325, cross.area = 588) :
  Impossible: cross section area too large.

Does anyone have suggestion?

Thank you.

Thank you all.

Yes. I just miss understand this part. Now it is OK.

On Sun, Jan 27, 2013 at 7:41 PM, Paul Boutros <Paul.Boutros at oicr.on.ca>
wrote:
> Hi Fabrice,
>
> The cross.area parameter gives the size of the intersection, which cannot
be larger than the size of either set 1 (area1 parameter) or set 2 (area2
parameter).  You probably want:
> venn.plot <- draw.pairwise.venn(
> area1 = 3186 + 5880,
> area2 = 325 + 5880,
> cross.area = 5880);
>
> Paul
>
>
> -----Original Message-----
> From: hiekeen at gmail.com [mailto:hiekeen at gmail.com] On Behalf Of
Fabrice Tourre
> Sent: January-27-13 5:06 PM
> To: r-help at r-project.org
> Cc: Paul Boutros
> Subject: Package: VennDiagram. Error in draw.pairwise.venn Impossible:
cross section area too large
>
> Dear list,
>
> When I use VennDiagram package, I got a error as follow:
>
> venn.plot <- draw.pairwise.venn(
> area1 = 3186,
> area2 = 325,
> cross.area = 5880);
>
>
> Error in draw.pairwise.venn(area1 = 3186, area2 = 325, cross.area = 588) :
>   Impossible: cross section area too large.
>
> Does anyone have suggestion?
>
> Thank you.