[R] Taylor diagram

Jim Lemon jim at bitwrit.com.au
Mon Dec 8 12:43:49 CET 2008

Csima Gabriella wrote:
> Dear Everyone,
> I wrote a Taylor diagram program in R, but it was not very general, so I was happy to find the Taylor.diagram in the plotrix package.
> On the other hand I can find many problems with the pos.cor=TRUE case, in other words, when we use only the first quarter of the space (positive correlations). (When we choose pos.cor=FALSE, the program seems to me perfect)
> 1.There is only one line around the (0,0) point:
> I looked at  this part of the program:
>             if (ref.sd) {
>                 xcurve <- cos(seq(0, pi/2, by = 0.01)) * sd.r
>                 ycurve <- sin(seq(0, pi/2, by = 0.01)) * sd.r
>                 lines(xcurve, ycurve)
>             }
> I have tried this part of the program (using sd.r=0 and naturally using a plot(..)), it gave only one quarter circle and not a seq of them.
> 2. No lines helping to read the correlation easily at all.
> Could you help me, how to correct the program to use as many sd, corr and rmse line as I would like to?
> Thank you very much for your help in advance!
Hi Gabriella,
Olivier Eterradossi wrote the version you prefer, and he may be able to 
send you a fix. If not, I can probably have a look at it tomorrow night 
and work something out. I'll check to see if you have gotten a reply then.


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