[ncl-talk] Overlay of XY plot is not occurring

[Atul Saini]

Ohh god! How can I forget it? Sorry to bother you and Thanks a lot Dr.
Karin to let me know about the range. It is fine now.😄

Regards,





On Wed, Nov 13, 2019 at 6:27 PM Karin Meier-Fleischer via ncl-talk <
ncl-talk at ucar.edu> wrote:

> Hi Atul,
>
> your value range is wrong. You can use the printMinMax function to see the
> data range of the variables.
>
>   printMinMax(tmean,0)
>   printMinMax(tmin,0)
>   printMinMax(tmax,0)
>
> Returns
>
>  : min=23.9729   max=25.8099
>  : min=18.8202   max=20.6115
>  : min=28.7211   max=31.7591
>
> Add to the resources
>
>   res at trYMinF = 18.
>   res at trYMaxF = 32.
>
> And you define plot2 with variable tmax instead of tmin.
>
>  plot2 = gsn_csm_xy(wks,time,tmin,res)
>
> -Karin
>
> Am 13.11.19 um 13:44 schrieb Atul Saini via ncl-talk:
>
> Hello All,
>               *Please have a look at the data and below given script, it
> is not resulting into overlay.*
>
>
> begin
>   a=addfile("HP_Temp.nc","r")
>   tmean=a->tmean(:,0,0)
>   tmin=a->tmin(:,0,0)
>   tmax=a->tmax(:,0,0)          ; read in right variable (y2)
>   tmean_time=a->time(0:66)                ; this is our x
>  ;---Convert to fractional years for easier plotting.
>   time=cd_calendar(tmean_time,4)        ; scale for convenience
> ;---Start the graphics
>  wks = gsn_open_wks("png","xy")              ; send graphics to PNG file
> ;---Plotting options for time series plot
>   res             = True
>   res at gsnMaximize = True
>   res at gsnDraw     = False      ; Will draw later, after overlaying
>   res at gsnFrame    = False      ; all plots
>   res at vpWidthF    = 0.8        ; Make plots wider
>   res at vpHeightF   = 0.4
> ;---Resources for legend
>   res at pmLegendDisplayMode    = "Always"              ; turn on legend
>   res at pmLegendWidthF         = 0.12                  ; Change width and
>   res at pmLegendHeightF        = 0.15                  ; height of legend.
>   res at pmLegendOrthogonalPosF = -0.08                 ; move up slightly
>   res at lgLabelFontHeightF     = .011                  ; change font height
>   res at lgPerimOn              = False                 ; no box around
>   res at lgItemOrder            = (/1,0/)               ; reverse legend
> ;---Titles
>   res at tiMainString           = "Temperature"
>   res at tiYAxisString          = "Temp in Deg Celsius"
> ;---Turn off some tickmarks
>   res at tmXTOn                 = False    ; bottom off
>   res at tmYROn                 = False    ; right off
>   res at xyLineThicknessF       = 2.0      ; default is 1
>   res at xyMonoDashPattern      = True     ; force all solid lines
> ;--------------------------------------------------
> ; The time_axis_label function adds additional
> ; resources to "res" to produce nicely-formatted
> ; time labels on X axis. This function only works
> ; if you have a time "units" recognized by the
> ; cd_calendar function.
> ;---------------------------------------------------
> ;---Set resources for colors and labels
>   colors1 = (/"blue","red"/)
>   colors2 = (/"darkgreen","darkorange"/)
>   colors3 = (/"brown","purple"/)
>   labels1 = "Tmean"
>   labels2 = "Tmax"
>   labels3 = "Tmin"
> ;---Create the four XY plots
>   res at xyLineColors           = colors1
>   res at xyExplicitLegendLabels = labels1
>   res at pmLegendParallelPosF   = 0.15
>  plot1 = gsn_csm_xy(wks,time,tmean,res)
>   res at xyLineColors           = colors2
>   res at xyExplicitLegendLabels = labels2
>   res at pmLegendParallelPosF   = 0.37
>  plot2 = gsn_csm_xy(wks,time,tmax,res)
>   res at xyLineColors           = colors3
>   res at xyExplicitLegendLabels = labels3
>   res at pmLegendParallelPosF   = 0.59
>  plot3 = gsn_csm_xy(wks,time,tmax,res)
> ;---Overlay one plot on the other, so they become one plot.
>   overlay(plot1,plot2)
>   overlay(plot1,plot3)
>   draw(plot1)            ; This will draw all four plots
>   frame(wks)
> end
>
>
>
> Regards,
>
>
>
>
> _______________________________________________
> ncl-talk mailing listncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
> _______________________________________________
> ncl-talk mailing list
> ncl-talk at ucar.edu
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20191113/2222940a/attachment.html>