<div dir="ltr"><div><div>Hi Alan,<br><br></div>I see what you mean, and I can't say this is desired behavior. It curiously shows up only in the so-called document-based formats (ps, pdf, svg), but not in the image-based formats (X11, png). I believe its the result of the circle's interior is filled, then the border drawn, and where those two markings overlap, the opacities accumulate. I unfortunately don't know offhand how to resolve the problem, nor suggest a work-around. I will file a bug ticket however. <br><br></div>Rick<br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Dec 2, 2014 at 12:35 PM, Alan Brammer <span dir="ltr"><<a href="mailto:abrammer@albany.edu" target="_blank">abrammer@albany.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto"><div style="font-size:13.076923370361328px;margin:0px">Dear All.</div><div style="margin:0px"><b><br></b></div><div style="margin:0px"><b>Problem: </b></div><div style="margin:0px">When combining gsMarkerIndex 16 with gsMarkerOpacity < 1.0 a small but sometimes significant perimeter circle is drawn with Opacity = 1.0. Leaving a bold perimeter around the marker. </div><div style="margin:0px">Maybe this is the desired behaviour? </div><div style="margin:0px"><br></div><div style="margin:0px"><br></div><div style="margin:0px"><b>Code and Examples:</b></div><div style="margin:0px"><b><br></b></div><div style="margin:0px">wks = gsn_open_wks("pdf","test") </div><div style="font-size:13.076923370361328px;margin:0px">res = True</div><div style="font-size:13.076923370361328px;margin:0px">res@gsnDraw = False</div><div style="font-size:13.076923370361328px;margin:0px">res@gsnFrame = False</div><div style="font-size:13.076923370361328px;margin:0px">plot = gsn_blank_plot(wks, res)</div><div style="font-size:13.076923370361328px;margin:0px">gs_res = True</div><div style="font-size:13.076923370361328px;margin:0px">gs_res@gsMarkerIndex = 16</div><div style="font-size:13.076923370361328px;margin:0px">gs_res@gsMarkerSizeF = 0.14 </div><div style="font-size:13.076923370361328px;margin:0px">gs_res@gsMarkerColor = "Red"</div><div style="font-size:13.076923370361328px;margin:0px">mark1 = gsn_add_polymarker(wks, plot, 0.3, 0.3, gs_res)</div><div style="font-size:13.076923370361328px;margin:0px">gs_res@gsMarkerOpacityF = 0.6</div><div style="font-size:13.076923370361328px;margin:0px">mark = gsn_add_polymarker(wks, plot, 0.5, 0.5, gs_res)</div><div style="font-size:13.076923370361328px;margin:0px">draw(plot)</div><div style="font-size:13.076923370361328px;margin:0px">frame(wks)</div><div style="font-size:13.076923370361328px;margin:0px"><br></div><div style="font-size:13.076923370361328px;margin:0px">test.pdf <- zoomed in from the above code. On the semi transparent marker the perimeter is evident. This is normally not noticeable however. </div><div style="font-size:13.076923370361328px;margin:0px">example.png <- map with lots of polymarkers on it. The bold perimeter becomes rather evident in this use. </div><div style="font-size:13.076923370361328px;margin:0px"><br></div><div style="font-size:13.076923370361328px;margin:0px"><br></div><div style="font-size:13.076923370361328px;margin:0px"><b>Solutions?</b></div><div style="font-size:13.076923370361328px"><span style="white-space:pre-wrap"> </span>gsLineOpacity does not seem to influence the perimeter line. </div><div style="margin:0px"><br></div><div style="font-size:13.076923370361328px;margin:0px"><font face="Helvetica"><span style="white-space:pre-wrap"> </span><strike>I guess I should be using MarkerIndex 1 instead of 16</strike> MarkerIndex 1 also does the same thing. After testing it at the end of this email. </font></div><div style="margin:0px"><br></div><div style="margin:0px"><br></div><div style="margin:0px"><br></div><div style="margin:0px"><br></div><div style="margin:0px">Thanks,</div><div style="margin:0px"><br></div><div style="margin:0px">Alan. </div><div style="margin:0px"><br></div><div style="margin:0px"><br></div><div style="margin:0px">P.s. Apologies if this comes thru twice, the first version had a pdf which was too large. </div><span class="HOEnZb"><font color="#888888"><div style="margin:0px"><br></div><div style="margin:0px"><br></div><br style="font-size:13.076923370361328px"><div style="font-size:13.076923370361328px"><div style="font-family:helvetica,arial">-- <br>Alan Brammer<br>PhD Candidate — African Easterly Waves and TC genesis</div><div style="font-family:helvetica,arial">University At Albany, NY</div><div style="font-family:helvetica,arial"><a href="http://www.atmos.albany.edu/student/abrammer" target="_blank">www.atmos.albany.edu/student/abrammer</a></div></div></font></span></div></div><br>_______________________________________________<br>
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