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<p style="margin-top: 0px; margin-bottom: 0px;">Hi NCL users,<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">I'm trying to plot observation data to model simulated data map. I think I should use gsn_add_polymarker to overlay them. But for the @gsMarkerColor, I want use the same color for plotting simulated data map,
so I tried to use code like the following. But I got black dots on the map. Can somebody help me to solve this? Thank you very much.<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">Yun<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">wks = gsn_open_wks("x11", "overlay")<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">gsn_define_colormap(wks,"WhAqGrYeOrReVi200")<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">cmap = gsn_retrieve_colormap(wks)<br>
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<p style="margin-top: 0px; margin-bottom: 0px;"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">cnLevels = (/5,10,15,20,25,30</span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">/</span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">)</span><br>
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<p style="margin-top: 0px; margin-bottom: 0px;">res_poly = True<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">res_poly@gsMarkerIndex = 16<br>
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<p style="margin-top: 0px; margin-bottom: 0px;">res_poly@gsMarkerSizeF = 10 <br>
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<p style="margin-top: 0px; margin-bottom: 0px;">do i = 0, station_numb<br>
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<p style="margin-top: 0px; margin-bottom: 0px;"><span style="color: rgb(255, 0, 0);">res_poly@gsMarkerColor = GetFillColor(cnLevels, cmap, pmvalue(i))</span><br>
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<div>dum = gsn_add_polymarker(wks, plot, x, y, res_poly)<br>
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<div>str1 = unique_string("dum"<span style="font-size: 12pt;">)</span></div>
<div><span style="font-size: 12pt;">plot@$str1$=dum</span></div>
<div><span style="font-size: 12pt;">end do</span></div>
<div><span style="font-size: 12pt;">draw (plot)</span></div>
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