Re: Help Needed With the Taylor Diagram Functions

Not sure I understand but ...

[1] The input consists of the ratios and the pattern correlations.
     A sample snippet from a code

     wmean_cntl = sumwc/sumw
     wmean_test = sumwt/sumw
                                          ; wgted areal variance
     wvar_cntl = sum(wgt*(vcntl-wmean_cntl)^2)/sumw
     wvar_test = sum(wgt*(vtest-wmean_test)^2)/sumw

                                          ; wgted correlation coef
     wcc = (sum(wgt*vcntl*vtest) - sumwc*sumwt/sumw )/ \
                   ((sum(wgt*vcntl^2) - sumwc^2/sumw) * \
                     (sum(wgt*vtest^2) - sumwt^2/sumw))^0.5

     ratio(nc,nv) = (wvar_test/wvar_cntl)^0.5
     cc(nc,nv) = wcc

     So, there is no way to recover and plot the individual standard
     deviations. You would have to take the script and add the code
     to do that.

[2] "Also, is there a way to display the values of the RMSE on
     the diagram?" Not sure if this was answered in [1]. If you
     are referring to the dashed lines, see Example 4

   ty_opt@stnRad = (/ 0.5, 1.5 /) ; additional standard radii
   ty_opt@ccRays = (/ 0.6, 0.9 /) ; correllation rays
   ty_opt@centerDiffRMS = True ; RMS 'circles'

--------
If you are "new to NCL", please read the Mini-Language Manual at
    http://www.ncl.ucar.edu/Document/Manuals/

On 7/12/12 6:51 PM, Joshua Walston wrote:
> Hello,
>
> I am new to NCL and have a question about how exactly a function works.
> I am interested in creating a normalized Taylor Diagram using the
> Special Topics Taylor Diagram function: taylor_diagram.ncl. The diagram
> is designed to display three statistical values (standard deviation,
> root mean square error, and the correlation) of a reference and
> simulated field. This function can be found at this link:
>
> http://www.ncl.ucar.edu/Applications/taylor.shtml
>
> A few of the examples from the above link show diagrams that have RMSE
> lines, but the scripts do not refer to RMSE inputs only ratio values and
> correlation values. My question is then, how are the RMSE values
> displayed on these normalized Taylor Diagrams? Also, is there a way to
> display the values of the RMSE on the diagram?
>
> Thanks for the help,
>
> Let me know if I am making any sense of if I need to be more specific!
>
> ~Josh
>
> --
> Joshua M. Walston
> Graduate Research Assistant
> University of Alaska Fairbanks
> Department of Atmospheric Sciences
> International Arctic Research Center 408 C2
> Office: (907) 474-2681 <tel:%28907%29%20474-2681>
> Cell: (775) 830-1717 <tel:%28775%29%20830-1717>
>
>
>
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Received on Thu Jul 12 20:14:54 2012