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Hi Jared & Mary,
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<div class="">Thanks for the responses. These are all good and show, for me, new ways to use NCL.</div>
<div class="">Unfortunately, as Jared pointed out, I’m not trying to hatch my figure based on the contours values.</div>
<div class="">I’m working on a publication so forgive me if I hesitate to send to all of ncl-talk. Let me explain a bit more.</div>
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<div class="">I have to two panel containing 2 plots, but these plots have x-axis of different lengths (just by 1 value) e.g., plot 1 has a x-value from 0:10 and plot 2: 1:10.</div>
<div class="">Since I’m comparing model results with observations I would like to put a hatch box over the plot 1 between x= 0 and x= 1 so that the reader can still see the contours beneath but note the different ranges of the plots.</div>
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<div class="">The examples Mary suggested didn’t really cover this example. apologies for not being more clear first time around. </div>
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<div class="">I tried the following with the thought of adding a box with hatch fill between x= 0 and x=1 but zero effect later when I plot the panel.</div>
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<div class=""> ypt =(/-50.0,-27.5/)</div>
<div class=""> xpt =(/0.0,19.0/)</div>
<div class=""> polyres = True </div>
<div class=""> polyres@gsFillColor = "black"</div>
<div class=""> polyres@gsFillIndex = 3</div>
<div class=""> polyres@gsFillOpacityF = 0.2</div>
<div class=""> dum2 = gsn_add_polygon(wks,plot(0),xpt,ypt,polyres) ; add polygon</div>
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<div class="">Am I barking up the wrong tree here or am I making an error somewhere?</div>
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<div class="">Appreciate the help guys,</div>
<div class="">/M</div>
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<div class="">On 8 Mar 2018, at 18:30, Mary Haley <<a href="mailto:haley@ucar.edu" class="">haley@ucar.edu</a>> wrote:</div>
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<div class="gmail_default" style="font-size:small">Hi Marston,</div>
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<div class="gmail_default" style="font-size:small">If you simply want to draw hatching on top of an existing contour plot, then you can use gsn_contour_shade. </div>
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<div class="gmail_default" style="font-size:small"><a href="http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_contour_shade.shtml" class="">http://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_contour_shade.shtml</a></div>
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<div class="gmail_default" style="font-size:small">This function is for the sole purpose of taking an existing contour plot, and adding some hatching or stippling to highlight an area of interest.</div>
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<div class="gmail_default" style="font-size:small">Here are some examples:</div>
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<div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/conOncon.shtml#ex4" class="">http://www.ncl.ucar.edu/Applications/conOncon.shtml#ex4</a><br class="">
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<div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/coneff.shtml#ex11" class="">http://www.ncl.ucar.edu/Applications/coneff.shtml#ex11</a><br class="">
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<div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/overlay.shtml#ex5" class="">http://www.ncl.ucar.edu/Applications/overlay.shtml#ex5</a><br class="">
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<div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/wavelet.shtml#ex3" class="">http://www.ncl.ucar.edu/Applications/wavelet.shtml#ex3</a><br class="">
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<div class="gmail_default">Some of these may not use gsn_contour_shade.</div>
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<div class="gmail_default">Let ncl-talk know if this is not what you're after.</div>
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<div class="gmail_default">--Mary</div>
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<div class="gmail_quote">On Thu, Mar 8, 2018 at 3:47 AM, Marston Ward <span dir="ltr" class="">
<<a href="mailto:marston.johnston@gu.se" target="_blank" class="">marston.johnston@gu.se</a>></span> wrote:<br class="">
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Hi,</div>
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I’m trying to mask a part of a gsn_csm_contour plot using a “hatch”. I don’t want to simply mask out the area because I want to the data to still be visible under the hatch.</div>
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Is it possible to do this in NCL? A simple search returned nothing in NCL. Just wondering if this is possible and it so, are there examples.</div>
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Best,</div>
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/M</div>
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<p class="MsoNormal"><b class=""><i class="">Marston S. Ward</i></b><br class="">
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