[R-meta] Jitter points in the contour-enhanced funnel plot

[Michael Dewey]

Dear Angeline

The first thing I would try is using a different plot symbol. A hollow 
circle or a cross might help if the points are not absolutely identical. 
The second thing would be to re-run the meta-analysis with the values of 
yi and sei (or vi) with added jitter, perhaps using the jitter() 
function for that.

Michael

On 18/07/2018 14:58, Angeline Tsui wrote:
> Dear all,
> 
> I plotted the studies in my meta-analysis in a contour-enhanced funnel
> plot. In my meta-analysis, I have about 140 studies. However, when I plot
> the funnel plot, I find that a number of studies (i.e., points) overlapped
> with each other in the plot and this leads to an illustration that I am not
> plotting all studies in the funnel plot.
> 
> So I am writing to ask if you can teach me how to jitter points in the
> funnel plot, so that there could be some spaces between studies with
> similar effect size?
> 
> Thanks,
> Angeline
> 

-- 
Michael
http://www.dewey.myzen.co.uk/home.html