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

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