[ncl-talk] Fw: Taylor diagram

[Serena Illig]

Sorry, I am not an NCL user. I can't help you with this.
I used NCL only for plotting Taylor diagrams years ago, but I computed the
correlations and ratio with another software.
S.

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`·.¸.·´¯`·...¸><(((º>                                                  .

  .
  Serena ILLIG-THEVENIN       LEGOS/IRD       .
                                                                           .
             University of Cape Town - UCT          .
             Department of Oceanography           .
             Private Bag X3, Rondebosch  7701   .
             SOUTH AFRICA                                  .

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                                                 <º)))><..·´



On Wed, Feb 13, 2019 at 11:19 AM Ehsan Taghizadeh <ehsantaghizadeh at yahoo.com>
wrote:

> Dear Serena
> Thank you so much for your nice reply.
> I have another question and I'll be thankful if I could have your help
> again.
> Does NCL have a script which plots RMSE (or ratio of RMSE or something
> else related to RMSE), too? Because there is some comments about RMSE at
> https://www.ncl.ucar.edu/Applications/taylor.shtml, but it seems none of
> the examples show RMSE. However taylor_2.ncl has just drawn its line with
>
>   res at centerDiffRMS   = True               ; RMS 'circles'
>   res at centerDiffRMS_color = "LightGray"    ; default is "black"
>
> But there is no line to read RMSE in this example.
> I'll be thankful if I hear from you.
>
> Sincerely
> Ehsan
>
>
> On Wednesday, February 13, 2019, 12:27:13 PM GMT+3:30, Serena Illig <
> serena.illig at gmail.com> wrote:
>
>
> Dear Ehsan,
>
> The answer is ratio need to be the ratio of standard deviation (STD).
> Reading the Taylor (2001) article, you will see that the ratio that has to
> be computed is the ratio of standard deviation. So the labels are corrects.
> Looking at https://www.ncl.ucar.edu/Applications/taylor.shtml and in
> particular at taylor_2.ncl example, you will see that second point of "p"
> data set has a ratio of 0.5 which is represented by the blue point labeled
> 2 in the diagram that has a distance from the origin of 0.5. Thus no
> root_square is applied to ratio before drawing the point in the diagram.
> So ratio has to be the ratio of STD, and the comment in taylor_3.ncl is
> erroneous.
>
> Have a nice day,
>
> Serena
>
> .¸. , . .·´¯`·
>  ><(((º>     `·.¸.·´¯`·...¸><(((º>¸.¸. , . .·´¯`· ><(((º> .
> `·.¸.·´¯`·...¸><(((º>                                                  .
>
>     .
>   Serena ILLIG-THEVENIN       LEGOS/IRD       .
>
>   .
>              University of Cape Town - UCT          .
>              Department of Oceanography           .
>              Private Bag X3, Rondebosch  7701   .
>              SOUTH AFRICA                                  .
>
>   .
>    E-mail     : *serena.illig at ird.fr *                           .
>    Web-site : http://sillig.free.fr                             .
>    Fax         : +27 21 650 3979                          .
>                                                                     .
>                                                  <º)))><..·´
>
>
>
> On Tue, Feb 12, 2019 at 7:10 PM Ehsan Taghizadeh <
> ehsantaghizadeh at yahoo.com> wrote:
>
> Hi,
> May I ask about "_ratio" in "taylor_3.ncl" (
> https://www.ncl.ucar.edu/Applications/taylor.shtml), which is ratio of
> "standard deviations" or "variances". Because in that has been written
> "_ratio are the ratio: Case_Variance/Reference_Variance"! However the label
> of axes are "Standard Deviations (Normalized)"!
> I'll be thankful if I have any help.
>
> Sincerely
>
> ----- Forwarded Message -----
> *From:* Ehsan Taghizadeh <ehsantaghizadeh at yahoo.com>
> *To:* Ncl-talk <ncl-talk at ucar.edu>
> *Sent:* Friday, February 8, 2019, 4:40:35 PM GMT+3:30
> *Subject:* Taylor diagram
>
> Hi,
> First of all I really sorry hearing about the destiny of NCL. I have had
> many helps from ncl-talk to write several scripts for my PhD thesis and
> also for my job. However I hope the best for NCL team.
>
> Second I have a problem again to draw a plot and I'll be thankful if I
> could have any help.
> I want to plot taylor diagram and for that I saw these links:
> http://www.ncl.ucar.edu/Document/Functions/Contributed/taylor_stats.shtml
> and
> https://www.ncl.ucar.edu/Applications/taylor.shtml
> Based on them I've plot the attached one (taylor.png). However I want to
> have RMSE too (something like Figure 1 in Taylor Diagram Primer
> (Taylor_2005.png)). May be taylor_stats could help for this, but I'm not
> sure. Could I know how to add RMSE to this plot. However it doesn't matter
> to be normalized taylor diagram or not.
> My data and scripts are also attached, if needed.
>
> Sincerely
> Ehsan
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