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Hi Atul,<br>
<br>
your value range is wrong. You can use the printMinMax function to
see the data range of the variables.<br>
<br>
<tt><font color="#3333ff"> printMinMax(tmean,0)<br>
printMinMax(tmin,0)<br>
printMinMax(tmax,0)</font></tt><tt><br>
</tt><br>
Returns<br>
<br>
<tt> : min=23.9729 max=25.8099</tt><tt><br>
</tt><tt> : min=18.8202 max=20.6115</tt><tt><br>
</tt><tt> : min=28.7211 max=31.7591</tt><br>
<br>
Add to the resources<br>
<br>
<font color="#3333ff"><tt> res@trYMinF = 18.</tt><tt><br>
</tt><tt> res@trYMaxF = 32.</tt></font><br>
<br>
And you define plot2 with variable tmax instead of tmin.<br>
<br>
<font color="#3333ff"><tt> plot2 = gsn_csm_xy(wks,time,tmin,res)</tt></font><br>
<br>
-Karin<br>
<br>
<div class="moz-cite-prefix">Am 13.11.19 um 13:44 schrieb Atul Saini
via ncl-talk:<br>
</div>
<blockquote type="cite"
cite="mid:CACqmUao92WCyXB3FwZtKmgiTmGkMh+LOq5WHiNkGjQnM8LMxFw@mail.gmail.com">
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<div>Hello All,</div>
<div> <b>Please have a look at the data and below
given script, it is not resulting into overlay.</b></div>
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begin<br>
a=addfile("HP_Temp.nc","r")<br>
tmean=a->tmean(:,0,0)<br>
tmin=a->tmin(:,0,0)<br>
tmax=a->tmax(:,0,0) ; read in right variable (y2)<br>
tmean_time=a->time(0:66) ; this is our x<br>
;---Convert to fractional years for easier plotting.<br>
time=cd_calendar(tmean_time,4) ; scale for convenience<br>
;---Start the graphics<br>
wks = gsn_open_wks("png","xy") ; send graphics to
PNG file<br>
;---Plotting options for time series plot<br>
res = True<br>
res@gsnMaximize = True<br>
res@gsnDraw = False ; Will draw later, after
overlaying<br>
res@gsnFrame = False ; all plots<br>
res@vpWidthF = 0.8 ; Make plots wider<br>
res@vpHeightF = 0.4<br>
;---Resources for legend<br>
res@pmLegendDisplayMode = "Always" ; turn on
legend<br>
res@pmLegendWidthF = 0.12 ; Change
width and<br>
res@pmLegendHeightF = 0.15 ; height of
legend.<br>
res@pmLegendOrthogonalPosF = -0.08 ; move up
slightly <br>
res@lgLabelFontHeightF = .011 ; change
font height<br>
res@lgPerimOn = False ; no box
around<br>
res@lgItemOrder = (/1,0/) ; reverse
legend<br>
;---Titles<br>
res@tiMainString = "Temperature"<br>
res@tiYAxisString = "Temp in Deg Celsius"<br>
;---Turn off some tickmarks<br>
res@tmXTOn = False ; bottom off<br>
res@tmYROn = False ; right off<br>
res@xyLineThicknessF = 2.0 ; default is 1<br>
res@xyMonoDashPattern = True ; force all solid lines<br>
;--------------------------------------------------<br>
; The time_axis_label function adds additional<br>
; resources to "res" to produce nicely-formatted<br>
; time labels on X axis. This function only works<br>
; if you have a time "units" recognized by the<br>
; cd_calendar function.<br>
;---------------------------------------------------<br>
;---Set resources for colors and labels<br>
colors1 = (/"blue","red"/)<br>
colors2 = (/"darkgreen","darkorange"/)<br>
colors3 = (/"brown","purple"/)<br>
labels1 = "Tmean"<br>
labels2 = "Tmax"<br>
labels3 = "Tmin"<br>
;---Create the four XY plots<br>
res@xyLineColors = colors1<br>
res@xyExplicitLegendLabels = labels1<br>
res@pmLegendParallelPosF = 0.15<br>
plot1 = gsn_csm_xy(wks,time,tmean,res)<br>
res@xyLineColors = colors2<br>
res@xyExplicitLegendLabels = labels2<br>
res@pmLegendParallelPosF = 0.37<br>
plot2 = gsn_csm_xy(wks,time,tmax,res)<br>
res@xyLineColors = colors3<br>
res@xyExplicitLegendLabels = labels3<br>
res@pmLegendParallelPosF = 0.59<br>
plot3 = gsn_csm_xy(wks,time,tmax,res)<br>
;---Overlay one plot on the other, so they become one plot.<br>
overlay(plot1,plot2)<br>
overlay(plot1,plot3)<br>
draw(plot1) ; This will draw all four plots<br>
frame(wks)<br>
end
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<div><font
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