Re: adding arrow and circle on figure

Hi Louis,

You didn't mention what the problem was.

Also, I don't see the code where you are trying to add the arrows and
circles. Or, have you
not added this code yet?

Are you trying to add the arrows and circles to the inside of the
plot, or outside of it?

If you are trying to add the arrows and circles to the plots
themselves, I recommend using
gsn_add_polyline. There are some examples on the primitives example
page:

http://www.ncl.ucar.edu/Applications/polyg.shtml

You are setting some resources for the gsn_panel call that don't make
sense.
These three resources only apply when you are creating individual
plots, and
not to the panel itself:

  resP@cnFillOn = True ; turn on color
   resP@tiXAxisString = " "
   resP@tiYAxisString = " "

These resources are being set after gsn_panel is called, so they're
having no effect.
You generally shouldn't be setting these for a panel plot anyway:

     resP@vpXF = 0.095
     resP@vpYF = 0.85
     resP@vpHeightF = 0.9 ; Make this second map smaller.
     resP@vpWidthF = 0.9

I'm not sure why you have this code:

        gsn_text_ndc(wks, "a)", .305, .85, xtres)
        gsn_text_ndc(wks, "b)", .75, .85, xtres)

        gsn_text_ndc(wks, "c)", .305, .47, xtres)
        gsn_text_ndc(wks, "d)", .75, .47, xtres)

It looks like you are trying to add figure strings to your gsn_panel
plots, but you can do this when you call gsn_panel by
using the gsnPanelFigureStrings resource. It appears you are already
setting this resource, so I'm not sure why you
have these additional gsn_text_ndc calls.

--Mary

On Feb 8, 2010, at 10:26 AM, louis Vonder wrote:

> Hi NCL users,
>
> I am trying to add arrows and circle as shown in the attached figure.
> These vectors are used to depict diurnal cycle following clockwise.
> Unfortunately, I have some problem.
>
> Any help is appreciable.
>
> Here attached part of the script I used.
>
> Thanks
>
>
>
> wks = gsn_open_wks("eps",
> "panel_vector_mean_025_235K") ; open a ps file
> gsn_define_colormap(wks, "BlAqGrYeOrRevi200") ; choose color map
>
>
> plot = new(4, graphic) ; create a plot array
>
> res = True ; plot mods desired
> res@gsnDraw = False ; don't draw
> res@gsnFrame = False ; don't advance frame
>
>
> res@mpPerimOn = True
> res@mpFillOn = False ; turn off map fill
>
> res@mpDataBaseVersion = "Ncarg4_1" ; use finer
> database
> res@pmTickMarkDisplayMode = "Always" ; turn on
> tickmarks
> res@mpGeophysicalLineThicknessF = 2.5 ; thickness of
> outlines
> res@mpNationalLineThicknessF = 2.5
> res@mpOutlineBoundarySets = "National" ; turn on
> country boundaries
> res@gsnAddCyclic = False ; regional
> data, don't add pt
>
>
>
> res@mpMinLonF = min(lon) ; select a
> subregion
> res@mpMaxLonF = max(lon)
> res@mpMinLatF = min(lat)
> res@mpMaxLatF = max(lat)
>
>
>
> res@cnFillOn = True ; turn on color for
> contours
> res@cnLinesOn = False ; turn off contour
> lines
> res@cnLineLabelsOn = False ; turn off contour
> line labels
> res@gsnScalarContour = True ; contours desired
> res@gsnSpreadColors = True ; use full color map
> res@gsnSpreadColorStart = 25 ; start at color 17
> res@gsnSpreadColorEnd = 180 ; end at color 200
>
> res@lbLabelBarOn = False
> res@lbOrientation = "vertical" ; vertical label bar
> res@pmLabelBarOrthogonalPosF = -0.01 ; move label bar
> closer
> ; res@lbLabelStride = 4
>
> res@pmLabelBarOrthogonalPosF = 0.01
> res@pmLabelBarOrthogonalPosF = -0.05
> res@pmLabelBarOrthogonalPosF = 0.05
>
>
>
> res@cnLevelSelectionMode = "ManualLevels" ; set manual
> contour levels
> res@cnMinLevelValF = 2 ; set min
> contour level
> res@cnMaxLevelValF = 24 ; set max
> contour level
> res@cnLevelSpacingF = 2 ; contour
> spacing
> res@vcRefAnnoOrthogonalPosF = -1.0 ; move ref vector up
> res@vcRefMagnitudeF = 20.0 ; define vector
> ref mag
> res@vcRefLengthF = 0.035 ; define length of
> vec ref
> ; res@vcGlyphStyle = "CurlyVector" ; turn on curly
> vectors
> res@vcMinDistanceF = 0.015
> res@gsnAddCyclic = False
>
>
> res@gsnLeftString = "b)" ; add the gsn titles
> res@gsnCenterString = " "
> res@gsnRightString = "JJA"
> res@gsnStringFont = " " ; set gsnLeft/Center/
> RightString font
> ; to helvetica-bold from
> default.
>
> res@gsnLeftStringFontHeightF = 0.025 ; instead of using
> txFontHeightF or gsnStringFontHeightF
> res@gsnCenterStringFontHeightF = 0.00 ; to set the
> gsnLeft/Center/RightString font heights,
> res@gsnRightStringFontHeightF = 0.025 ; individually set
> each string's font height.
>
> res@vpXF = 0.1
> res@vpWidthF = 0.725
> res@vpYF = 0.9
> res@vpHeightF = 0.8
>
> res@tmXBLabelFontHeightF = 0.02
> res@tmBorderThicknessF = 3.0
>
> res@vpXF = 0.2
> res@vpWidthF = 0.6
> res@vpYF = 0.83
> res@vpHeightF = 0.465
>
> res@gsnRightString = " "
>
> res@gsnLeftString = " "
>
> res@vcRefAnnoOn = False
>
> plot(0) = gsn_csm_vector_scalar_map_ce(wks, u1, v1, fc1, res)
>
> plot(1) = gsn_csm_vector_scalar_map_ce(wks, u2, v2, fc2, res)
>
> plot(2) = gsn_csm_vector_scalar_map_ce(wks, u3, v3, fc3, res)
>
> res@vcRefAnnoOn = True
>
> plot(3) = gsn_csm_vector_scalar_map_ce(wks, u4, v4, fc4, res)
>
>
> ;************************************************
> ; create panel
> ;************************************************
> resP = True ; modify the panel
> plot
> resP@gsnFrame = False ; don't advance
> panel plot
> resP@gsnPanelLabelBar = True ; add common colorbar
> resP@gsnMaximize = True
> resP@lbOrientation = "vertical"
> resP@lbLabelFontHeightF = 0.015
> resPgsnPanelYWhiteSpacePercent = 5
> resP@cnFillOn = True ; turn on color
>
> resP@txString = " "
> resP@tiXAxisString = " "
> resP@tiYAxisString = " "
>
> resP@gsnPanelBottom = 0.05 ; add space
> at bottom
> resP@gsnPanelFigureStrings = (/"DJF", "MAM", "JJA", "SON"/) ;
> add strings to panel
> resP@amJust = "TopLeft"
> resP@gsnPanelFigureStringsFontHeightF = 0.015
> resP@gsnPanelFigureStringsPerimOn = False
>
> gsn_panel(wks, plot, (/2, 2/), resP) ; now draw as
> one plot
> resP@vpXF = 0.095
> resP@vpYF = 0.85
> resP@vpHeightF = 0.9 ; Make this second map smaller.
> resP@vpWidthF = 0.9
>
> xtres = True
> xtres@txFontHeightF = 0.025
> xtres@txAngleF = 0.
> xtres@txFontColor = "red"
>
> xtres@txFontHeightF = 0.025
>
> gsn_text_ndc(wks, "a)", .305, .85, xtres)
> gsn_text_ndc(wks, "b)", .75, .85, xtres)
>
> gsn_text_ndc(wks, "c)", .305, .47, xtres)
> gsn_text_ndc(wks, "d)", .75, .47, xtres)
>
> frame(wks)
>
>
> <image.jpg>
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Received on Tue Feb 9 09:55:13 2010