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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>I eventually solved my problem by making sure the line segments overlapped, rather than joining at a single point.<o:p></o:p></p><p class=MsoNormal>After checking that they did indeed join at a single point, as below.<o:p></o:p></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=421 height=296 style='width:4.3888in;height:3.0833in' id="Picture_x0020_9" src="cid:image002.png@01DA013A.B230BB40"></span><o:p></o:p></p><p class=MsoNormal>I presume the missing area was due to some kind of rounding error making Therion think that the area bounding lines did not form a closed area. Only manifesting at some scale(s).<o:p></o:p></p><p class=MsoNormal>Bruce<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='mso-ligatures:none'>From:</span></b><span lang=EN-US style='mso-ligatures:none'> Bruce Mutton <bruce@tomo.co.nz> <br><b>Sent:</b> Monday, 16 October 2023 18:22<br><b>To:</b> 'List for Therion users' <therion@speleo.sk><br><b>Subject:</b> Area water visibility inconsistent depending on scale<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hello again<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m wondering why my area water displays at scale of 1:1000 but if I compile at 1:500 just one of the area waters does not display?<o:p></o:p></p><p class=MsoNormal>The two water areas are both defined in the same scrap, which I have highlighted in yellow in one of the images.<o:p></o:p></p><p class=MsoNormal>The areas are defined by three lines – a single horizontal line for the water surface and two curved lines to bound each of the areas.<o:p></o:p></p><p class=MsoNormal>All lines and areas have -clip off set. When the lower curved lines have -visibility on, I can see they are there, but the area water still does not display.<o:p></o:p></p><p class=MsoNormal>Thinking that the label about the water supply might be somehow obscuring the area, I deleted it, but that had no effect<o:p></o:p></p><p class=MsoNormal>Other area waters in the same compilation (indeed the same entire project) are OK as far as I know. Have never noticed behaviour like this before.<o:p></o:p></p><p class=MsoNormal>Therion 6.1.8<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Images below…<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=663 height=185 style='width:6.9027in;height:1.9236in' id="Picture_x0020_1" src="cid:image004.png@01DA013A.B230BB40"></span><o:p></o:p></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=657 height=167 style='width:6.8402in;height:1.743in' id="Picture_x0020_3" src="cid:image006.png@01DA013A.B230BB40"></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve checked the distortion with debug first and debug second, distortion looks OK, but there is no sign of the larger area.<o:p></o:p></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=659 height=207 style='width:6.8611in;height:2.1597in' id="Picture_x0020_4" src="cid:image008.png@01DA013A.B230BB40"></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>With lower area water boundaries set to -visibility on…<o:p></o:p></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=663 height=211 style='width:6.9027in;height:2.2013in' id="Picture_x0020_5" src="cid:image010.png@01DA013A.B230BB40"></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m wondering if the morphing is shortening the top line at 1:1000 (making the area fail) but not at 1:500.<o:p></o:p></p><p class=MsoNormal>I don’t think this should happen, as I made the left-hand line points coincident, so both area boundary lines should join perfectly without a gap. It seems they do, as below.<o:p></o:p></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=280 height=213 style='width:2.9166in;height:2.2222in' id="Picture_x0020_6" src="cid:image012.png@01DA013A.B230BB40"></span><o:p></o:p></p><p class=MsoNormal><span style='mso-ligatures:none'><img width=644 height=186 style='width:6.7083in;height:1.9375in' id="Picture_x0020_7" src="cid:image021.png@01DA013A.B230BB40"></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So any ideas as to why visibility of one of the area waters in this project should be scale dependant?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks<o:p></o:p></p><p class=MsoNormal>Bruce<o:p></o:p></p></div></body></html>