[ncl-talk] Need help for plotting multiple regression lines in one plot

[mireiyue]

> On Mar 2, 2016, at 3:01 PM, Adam Phillips <asphilli at ucar.edu> wrote:
> 
> Hi Sun,
> (Please always include the ncl-talk email list on any replies.) As you do have a frame(wks) call at the end of your script, can you set gsnDraw  and gsnFrame = True, and send the resulting 4 images to the ncl-talk email list so all can see? 
> Thanks,
> Adam
> 
> On Wed, Mar 2, 2016 at 2:47 PM, mireiyue <mireiyue at gmail.com <mailto:mireiyue at gmail.com>> wrote:
> Dear NCL users
> 
> I am trying to plot three different data with three regression lines in one plot. I can plot all data in one plot but the regression line only plot the first one.  How I can plot all three regression lines in one plot? I do appreciate any helps!! Thank you!!
> 
> Sun-
> 
>  rc =  regline_stats(calextd,merracmf)
>  print(rc)
>  pltarry   = new((/2,dimsizes(calextd)/),typeof(calextd))
>  pltarry(0,:) = merracmf                                ; use markers
>  pltarry(1,:) = rc*(calextd-rc at xave) + rc at yintercept          ; use solid line
>  printVarSummary(pltarry)
> 
>  rc1 = regline_stats(camMextd,camMcmf)
>  print(rc1)
>  pltarry1   = new((/2,dimsizes(camMextd)/),typeof(camMextd))
>  pltarry1(0,:) = camMcmf                                ; use markers
>  pltarry1(1,:) = rc*(camMextd-rc at xave) + rc at yintercept          ; use solid line
>  printVarSummary(pltarry1)
> 
>  rc2 = regline_stats(camextd,camcmf)
>  print(rc2)
>  pltarry2   = new((/2,dimsizes(camextd)/),typeof(camextd))
>  pltarry2(0,:) = camcmf                                ; use markers
>  pltarry2(1,:) = rc*(camextd-rc at xave) + rc at yintercept          ; use solid line
>  printVarSummary(pltarry2)
> 
> wks   = gsn_open_wks("eps","Global")
> res                   = True                     ; plot mods desired
> res at gsnDraw     = False      ; Will draw later, after overlaying
> res at gsnFrame    = False      ; all plots
> ; res at gsnMaximize       = False
> res at trXMinF              = 0.
> res at trYMinF              = 0.
> 
> res at xyMarkLineModes   = (/“Markers”,”Lines”/) ; choose which have markers
> res at xyExplicitLegendLabels = “A"
> res at pmLegendParallelPosF   = 0.35
> res at xyMarkers         = "16"                     ; choose type of marker
> res at xyMarkerColor     = "darkgreen"              ; Marker color
> res at xyMarkerSizeF       = 0.01                  ; Marker size (default 0.01)
> res at xyLineColor         = "black"
> res at xyLineThicknesses   = 1 ;(/1,2/)
> res at xyDashPatterns      = 0                      ; solid line
> plot2  = gsn_csm_xy (wks,calextd,pltarry(0:1,:),res)
> 
> res at xyMarkers         = "7"                     ; choose type of marker
> res at xyMarkerColor     = "blue"              ; Marker color
> res at xyMarkerSizeF       = 0.01                  ; Marker size (default 0.01)
> res at xyExplicitLegendLabels = “B"
> res at pmLegendParallelPosF   = 0.79
> res at xyLineColor         = "red"
> res at xyLineThicknesses   = 1 ;(/1,2/)
> res at xyDashPatterns      = 0                      ; solid line
> plot1  = gsn_csm_xy (wks,camMextd,pltarry1(0:1,:),res)
> 
> res at xyExplicitLegendLabels = “C"
> res at pmLegendParallelPosF   = 1.2
> res at xyMarkers         = "12"                     ; choose type of marker
> res at xyMarkerColor     = "red"              ; Marker color
> res at xyMarkerSizeF       = 0.01                  ; Marker size (default 0.01)
> res at xyLineColor         = "blue"
> res at xyLineThicknesses   = 1 ;(/1,2/)
> res at xyDashPatterns      = 0                      ; solid line
> plot =gsn_csm_xy (wks,camextd,pltarry2(0:1,:),res)
> 
> overlay(plot,plot1)
> overlay(plot,plot2)
> draw(plot)            ; This will draw all four plots
> 
> 
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> 
> 
> 
> -- 
> Adam Phillips 
> Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
> www.cgd.ucar.edu/staff/asphilli/ <http://www.cgd.ucar.edu/staff/asphilli/>   303-497-1726 

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