[ncl-talk] mjo_wavenum_freq_season_plot

[Dennis Shea]

You altered the "*mjo_wavenum_freq_season_plot*
<http://www.ncl.ucar.edu/Document/Functions/Diagnostics/mjo_wavenum_freq_season_plot.shtml>".
Specifically, I assume you replaced:

  gsn_polyline(wks,plot,(/fline,fline/),(/ 0.,NW/), resp)
  gsn_text(wks,plot, (day+"d"),fline+0.005,0.93*NW,tres)

with something like .....  ????

 dum_line = *gsn_add_polyline*(wks, plot, (/fline,fline/),(/ 0.,NW/), resp)
 dum_text = *gsn_add_text*(wks,plot,label,0.75*tmXTValues(nTm-1), \
                                    0.35*tmYLValues(nTm-1) ,tres)

I am confused because the *gsn_add_polyline* draws a line with no text
embedded;
*gsn_add_text* just adds text yet your vertical lines have the embedded
30d  and 60d text.

Hard to determine what you did.



On Wed, Sep 19, 2018 at 12:43 AM Sujata Mandke <amin at tropmet.res.in> wrote:

> Dear NCL community,
> Greetings!
>
>
>  I am using NCL function  ”mjo_wavenum_freq_season_plot” to create wave
> number frequency spectra.
> I had modified this function to make four panel plots in one page in a
> single call to the function (plot attached with the mail).
>
> The two vertical lines corresponding to 30 and 60 day period are
> labelled using “gsn_add_text”.  The text 30d and 60d is written twice
> on this vertical line overlapping with the spectra, thereby reducing the
>  clarity. Thus,  text (30d and 60d) should be written only once at the
> top of the line. Please suggest resource if any, for this text to
> appear only once on the corresponding vertical line.
>
> To solve the above issue, I had also tried alternate method of using
> resource  - optPlot at dayLines=(/30,60/) and use this resource in a call
> to function (which is modified for four panel plots in single call to
> function)
> as follows
>  “ mjo_wavenum_freq_season_plot (wf,wf1,wf2,wf3,nameSeason(ns), pltDir,
> pltType, pltName, optPlot)
>
> However, after using this resource, text is not written on the two
> vertical
> lines (corresponding to 30 and 60 day).  This resource may be just for
> plotting vertical lines and is not meant for writing text on two vertical
> lines.
>
> Before posting the question, i had gone through NCL-talk archives
> and also searched resources for “gsn_add_text”, but found none.
>
> I am using NCL version 6.4.0 on linux machine.
> Please help in this regard.
>
> Any suggestion would be of great help.
>  Many thanks in advance.
>
> With best regards
> Dr. Sujata Mandke
> Scientist, Indian Institute of Tropical Meteorology
> Pune,INDIA._______________________________________________
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