[ncl-talk] NCL legend formatting question using gsn_legend_ndc

[Alan Rhoades]

Hello,

I have a question in regards to using the gsn_legend_ndc legend generator.

[image: Inline image 1]

I'd like to make plot A) (generated using the resources highlighted below)
look more like plot B) (modified manually) without generating two legends
with the gsn_legend_ndc and overlaying the plots.

The functionality I have in mind would be setting gsn_legend_ndc from...

gsn_legend_ndc(wks,17,labels,0.80,0.99,lgres)

...to...

gsn_legend_ndc(wks,(/8,9/),labels,0.80,0.99,lgres)

...to allow for a return on the legend labels where the new labels would be
placed to the right of the first set of labels.  After reviewing all of the
NCL legend/xy examples, I don't think this is currently possible though.

Here are the resources that I used to generate the "dummy" plot (i.e., A) )
above...

***********************************************
; legend resources
;***********************************************
 labels = (/"VR-CESM28 - 1980-2005","VR-CESM28 - 2025-2050","VR-CESM28 -
2075-2100","PRISM","BCSD-CMIP5","NLDAS14 MOSAIC","NLDAS14 NOAH","NLDAS14
VIC","NARCCAP - CRCM-CCSM","NARCCAP - CRCM-CGCM3","NARCCAP -
ECP2-GFDL","NARCCAP - HRM3-HADCM3","NARCCAP - MM5-CCSM","NARCCAP -
MM5-HADCM3","NARCCAP - RCM3-CGCM3","NARCCAP - RCM3-CGCM3","NARCCAP -
RCM3-GFDL","NARCCAP - WRFG-CCSM"/)

 lgres                    = True
; LEGEND LABELS AND COLORS
 lgres at lgMonoLineColor    = False
 lgres at lgBoxMinorExtentF  = 0.1 ; default 0.6 - controls how long a line
segment
 lgres at lgLineLabelStrings = labels
 lgres at lgLineColors     =
(/"Black","Red3","Red4","Cyan","Green","royalblue3","royalblue2","royalblue1","gray40","gray45","gray50","gray55","gray60","gray65","gray70","gray75","gray80"/)
 lgres at lgDashIndexes       = (/0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1/)    ;
dash indexes
 lgres at lgItemOrder  = (/ 16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 /)   ;
Reorder the legends

; LEGEND HEIGHT AND WIDTH
 lgres at vpWidthF           = 0.15                   ; width of legend (NDC)
 lgres at vpHeightF          = 0.175                   ; height of legend (NDC)

; LEGEND FONT HEIGHT (AVOID IF POSSIBLE)
; lgres at lgAutoManage           = False                 ; Necessary to set
font hgt
; lgres at lgLabelFontHeightF     = 0.025                ; label font height

; LEGEND BORDER AND COLORFILL
 lgres at lgPerimOn              = False                ; turn off/on box
around
 lgres at lgPerimFill            = "SolidFill"      ; Fill legend box w/white
 lgres at lgPerimFillColor       = "white"          ; so it masks XY curves

;
; Draw the legend, indicating the number of items, a label for each
; item, and the X, Y position of the legend in NDC coordinates.
;
 gsn_legend_ndc(wks,17,labels,0.80,0.99,lgres)

Thanks in advance!

AR

-- 

*Alan Rhoades | **PhD Candidate | **University of California, Davis*
*Atmospheric Science Graduate Group | **Climate Change Water and Society
(CCWAS) NSF IGERT Trainee*
*alan.m.rhoades at gmail.com
<alan.m.rhoades at gmail.com> | amrhoades at ucdavis.edu <amrhoades at ucdavis.edu>*
*Website <http://alanrhoades.weebly.com/> | Research Gate
<https://www.researchgate.net/profile/Alan_Rhoades> | LinkedIn
<https://www.linkedin.com/pub/alan-rhoades/22/5bb/52a>** | **Google Scholar
<https://scholar.google.gr/citations?user=AVFLiFsAAAAJ&hl=en>*
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