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<p class="MsoNormal">Dear NCL help,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am trying to make a plot with one set of streamline overlaid on another set of streamline. But I was not able to figure it out. I can only get the first set of streamline (as attached).
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I copy the main part of my code below. Could you please take a look and give advice? Thanks for your time! -Jiali<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">=====================<o:p></o:p></p>
<p class="MsoNormal">load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"<o:p></o:p></p>
<p class="MsoNormal">load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">begin<o:p></o:p></p>
<p class="MsoNormal"> f = addfile("uv10m_01deg_daily_1995.nc","r")<o:p></o:p></p>
<p class="MsoNormal"> u = f->U10(:,200:300,500:600) <o:p></o:p></p>
<p class="MsoNormal"> v = f->V10(:,200:300,500:600)<o:p></o:p></p>
<p class="MsoNormal"> u10 = dim_avg_n(u,0)<o:p></o:p></p>
<p class="MsoNormal"> v10 = dim_avg_n(v,0)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> f1 = addfile("uv10m_01deg_daily_2004.nc","r")<o:p></o:p></p>
<p class="MsoNormal"> u1 = f1->U10(:,200:300,500:600) <o:p></o:p></p>
<p class="MsoNormal"> v1 = f1->V10(:,200:300,500:600)<o:p></o:p></p>
<p class="MsoNormal"> u11 = dim_avg_n(u1,0)<o:p></o:p></p>
<p class="MsoNormal"> v11 = dim_avg_n(v1,0)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> wks = gsn_open_wks("ps","stream_1995_2004") ; open a ps file<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> res1 = True ; plot mods desired<o:p></o:p></p>
<p class="MsoNormal"> res1@gsnDraw = False<o:p></o:p></p>
<p class="MsoNormal"> res1@gsnFrame = False<o:p></o:p></p>
<p class="MsoNormal"> res1@stLineColor = "orange" ; changes color<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> res2 = True ; plot mods desired<o:p></o:p></p>
<p class="MsoNormal"> res2@gsnDraw = False<o:p></o:p></p>
<p class="MsoNormal"> res2@gsnFrame = False<o:p></o:p></p>
<p class="MsoNormal"> res2@stLineColor = "black"<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> plot_1 = gsn_csm_streamline(wks,u10,v10,res1)<o:p></o:p></p>
<p class="MsoNormal"> plot_2 = gsn_csm_streamline(wks,u11,v11,res2)<o:p></o:p></p>
<p class="MsoNormal"> overlay(plot_1,plot_2)<o:p></o:p></p>
<p class="MsoNormal"> draw(plot_1)<o:p></o:p></p>
<p class="MsoNormal"> frame(wks)<o:p></o:p></p>
<p class="MsoNormal">end<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">====================================<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Jiali Wang, Ph. D<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Environmental Science Division<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Argonne National Laboratory<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Tel: 630-252-2848<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><a href="http://www.evs.anl.gov/about-evs/staff/detail/index.cfm?/Wang/Jiali">http://www.evs.anl.gov/about-evs/staff/detail/index.cfm?/Wang/Jiali</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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