[ncl-talk] question about windrose circles

[LIU Chang]

Dear Dennis,

Thanks for your assistance.
I have tested the revised loading wind_rose.ncl.

  dirFrMaxNumCircles = 3     ;toint(dirFrMax/circFr +1.)
  dirFrMaxNum        = circFr*dirFrMaxNumCircles   ; number of circles < Comment

Then, I get a confirm 3-circles windrose figure. Million thanks!

Hope you have a good day!

Best regards,
Chang
________________________________
From: Dennis Shea <shea at ucar.edu>
Sent: Saturday, 17 August 2024 1:05 am
To: LIU Chang <cliucv at connect.ust.hk>
Cc: ncl-talk at mailman.ucar.edu <ncl-talk at mailman.ucar.edu>
Subject: Re: [ncl-talk] question about windrose circles

https://www.ncl.ucar.edu/Applications/rose.shtml

I have looked at the function code.

%> less  $NCARG_ROOT/lib/ncarg/nclscripts/csm/wind_rose.ncl

===
lines:

  dirFrMaxNumCircles = toint(dirFrMax/circFr +1.)
  dirFrMaxNum        = circFr*dirFrMaxNumCircles   ; number of circles
===

The following is untested ....

Perhaps making a copy of 'wind_rose.ncl' a

%> cp $NCARG_ROOT/lib/ncarg/nclscripts/csm/wind_rose.ncl wind_rose.liu_chang.ncl

Then, make a modification to wind_rose.liu_chang.ncl such as

  dirFrMaxNumCircles = toint(dirFrMax/circFr +1.)
;  dirFrMaxNum        = circFr*dirFrMaxNumCircles   ; number of circles < Comment
  dirFrMaxNum        = 3


then use the new code via

load "./wind_rose.liu_chang.ncl"

Again ... this is untested.

Good luck




On Fri, Aug 16, 2024 at 2:56 AM LIU Chang via ncl-talk <ncl-talk at mailman.ucar.edu<mailto:ncl-talk at mailman.ucar.edu>> wrote:
Dear all,

I am encountering an issue when using a similar script to https://www.ncl.ucar.edu/Applications/Scripts/rose_5.ncl to plot a wind rose. The circles in the plot seem to appear randomly, with two or three circles being generated.
[cid:ii_1915c1b06adcb971f161]

Could you please advise if there are any functions or settings that can ensure the number of circles, either two or three?
Thank you for your assistance.
Best regards,
Chang



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