[ncl-talk] Too much white space between rows in WRF panelplot

Adam Phillips asphilli at ucar.edu
Tue Apr 14 13:19:04 MDT 2020


Hi Tabish,
I do not see anything in your code; my guess is that there is a weird
resource conflict (or bug) that is resulting in too much space being placed
between the 2 rows of plots. You can get around this though by specifying
the placements of each panel by utilizing the information returned from
gsnPanelDebug. See example 19 here:
http://www.ncl.ucar.edu/Applications/panel.shtml#ex19
Adam

On Tue, Apr 14, 2020 at 11:39 AM Tabish Ansari via ncl-talk <
ncl-talk at ucar.edu> wrote:

> Hi
>
> I'm paneling eight wrf contour maps into 2 rows and 4 columns, and using
> gsnPanelYWhiteSpacePercent = 0. Still, there's a lot of white space between
> the two rows which I need to remove. Please see the attached plot.
>
> Here's the relevant part of my script:
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> *  b =
> addfile("/rasher/tabish/control-run-so4-ECMWF/wrfout_d03_2014-10-24_010000.nc
> <http://wrfout_d03_2014-10-24_010000.nc>","r")           ; Open a file  wks
> = gsn_open_wks("pdf","episode-maps")         ; Create a plot workstation
> gsn_define_colormap(wks,"WhiteBlueGreenYellowRed")  opts = True
>                      ; Set some Basic Plot options  opts at InitTime = False
>                      ; Do not plot time or footers  opts at Footer = False
> res = opts                                   ; Use basic options for this
> field  res at cnFillOn = True                          ; Create a color fill
> plot  res at cnLevelSelectionMode = "ManualLevels"   ; set levels manually
> res at ContourParameters = (/ 25, 325, 25 /) ; Set the levels  res at gsnFrame
>      = False                    ; don't advance frame yet  res at gsnDraw
>     = False                    ; don't draw plot  res at lbLabelBarOn = False
> res at tiMainOn = False  res at tiXAxisOn = False  contour_BASELINE_24 =
> wrf_contour(a0_24,wks,BASELINE_24,res)  contour_A_24 =
> wrf_contour(a0_24,wks,A_24,res)  contour_B_24 =
> wrf_contour(a0_24,wks,B_24,res)  contour_C_24 =
> wrf_contour(a0_24,wks,C_24,res)  contour_BASELINE_30 =
> wrf_contour(a0_30,wks,BASELINE_30,res)  contour_A_30 =
> wrf_contour(a0_30,wks,A_30,res)  contour_B_30 =
> wrf_contour(a0_30,wks,B_30,res)  contour_C_30 =
> wrf_contour(a0_30,wks,C_30,res)  pltres = True
>    ; Set plot options  pltres at NoTitles = False  pltres at CommonTitle  =
> False  pltres at NoHeaderFooter = True  pltres at PanelPlot = True  mpres = True
>                                 ; Set map options
> mpres at mpOutlineBoundarySets       = "AllBoundaries"   ; turn on country
> boundaries  mpres at mpGeophysicalLineColor      = "Black"       ; color of
> cont. outlines  mpres at mpNationalLineColor      = "Black"       ; color of
> cont. outlines  mpres at mpProvincialLineColor      = "Black"       ; color of
> cont. outlines  mpres at mpGeophysicalLineThicknessF = 1.5          ;
> thickness of outlines  mpres at mpNationalLineThicknessF = 1.5          ;
> thickness of outlines  mpres at mpProvincialLineThicknessF = 1.5          ;
> thickness of outlines  mpres at mpDataBaseVersion = "MediumRes"            ;
> choose higher resolution  mpres at mpDataSetName = "Earth..4"
> ; choose most recent boundaries*
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> *; MAKE PLOTS  mpres at tmXTOn = True  mpres at tmYROn = True
> mpres at tmXBMajorOutwardLengthF = 0.0               ; draw tickmarks inward
> mpres at tmXBMinorOutwardLengthF = 0.0               ; draw minor ticks
> inward  mpres at tmYLMajorOutwardLengthF = 0.0               ; draw tickmarks
> inward  mpres at tmYLMinorOutwardLengthF = 0.0               ; draw minor
> ticks inward  mpres at tmXTMajorOutwardLengthF = 0.0               ; draw
> tickmarks inward  mpres at tmXTMinorOutwardLengthF = 0.0               ; draw
> minor ticks inward  mpres at tmYRMajorOutwardLengthF = 0.0               ;
> draw tickmarks inward  mpres at tmYRMinorOutwardLengthF = 0.0               ;
> draw minor ticks inward  mpres at tmXBLabelFontHeightF = 0.018
> mpres at tmXTLabelFontHeightF = 0.018  mpres at tmYRLabelFontHeightF = 0.018
> mpres at tmYLLabelFontHeightF = 0.018  plot1 =
> wrf_map_overlays(b,wks,(/contour_BASELINE_24/),pltres,mpres) ; Plot field
> over map background  plot2 =
> wrf_map_overlays(b,wks,(/contour_A_24/),pltres,mpres) ; Plot field over map
> background  plot3 = wrf_map_overlays(b,wks,(/contour_B_24/),pltres,mpres) ;
> Plot field over map background  plot4 =
> wrf_map_overlays(b,wks,(/contour_C_24/),pltres,mpres) ; Plot field over map
> background  plot5 =
> wrf_map_overlays(b,wks,(/contour_BASELINE_30/),pltres,mpres) ; Plot field
> over map background  plot6 =
> wrf_map_overlays(b,wks,(/contour_A_30/),pltres,mpres) ; Plot field over map
> background  plot7 = wrf_map_overlays(b,wks,(/contour_B_30/),pltres,mpres) ;
> Plot field over map background  plot8 =
> wrf_map_overlays(b,wks,(/contour_C_30/),pltres,mpres) ; Plot field over map
> background  ; Panel the WRF plots.    pnlres                            =
> True    pnlres at gsnPanelXWhiteSpacePercent = 5       ; Add white space b/w
> plots.    pnlres at gsnPanelYWhiteSpacePercent = 0      ; Add white space b/w
> plots.    pnlres at gsnPanelLabelBar           = True    ; Turn on common
> labelbar    pnlres at lbBoxMinorExtentF          = 0.2
> pnlres at pmLabelBarOrthogonalPosF = 0.1    pnlres at gsnFrame = False
> gsn_panel(wks,(/plot1,plot2,plot3,plot4,plot5,plot6,plot7,plot8/),(/2,4/),pnlres);
> Draw a text string at the bottom  txres               = True
> txres at txFontHeightF = 0.012  gsn_text_ndc(wks,"PM~B~2.5~N~ in
> ~F33~m~F21~gm~S~-3~N~",0.5,0.21,txres)  frame(wks)*
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> Any help will be much appreciated.
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>
>
> *Tabish U Ansari*
>
> *Postdoctoral Researcher *
>
> *Centre for Climate and Air Pollution Studies (C-CAPS)*
> *School of Physics, NUI-Galway**, Ireland*
> *ResearchGate: https://www.researchgate.net/profile/Tabish_Ansari
> <https://www.researchgate.net/profile/Tabish_Ansari>*
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-- 
Adam Phillips
Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
www.cgd.ucar.edu/staff/asphilli/   303-497-1726

<http://www.cgd.ucar.edu/staff/asphilli>
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