<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Printers are allway dependent on setup of colour management in its driver. Pro printers are dependent on setup of RIPs sending data to them. Not easy task. <div><br></div><div>Martin S. <br><br><div id="AppleMailSignature" dir="ltr">Odesláno z iPhonu</div><div dir="ltr"><br>11. 8. 2021 v 21:15, Bruce Mutton <<a href="mailto:bruce@tomo.co.nz">bruce@tomo.co.nz</a>>:<br><br></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 15 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal">Thanks Martin<o:p></o:p></p><p class="MsoNormal">Highlights the dangers of absorbing a language by osmosis. A false sense of understanding!<o:p></o:p></p><p class="MsoNormal">I’ll try that out and see how it works.<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Out of interest I went back over old maps to check the colour of my gridlines. Until a few weeks ago I only ever used the default rgb colour model, and even now I only specify rgb, but occasionally force Therion to convert by specifying a cmyk colour model. I found that I actually got a random section of the two gridline output colours over previous years. My excuse for not picking it as a Therion behaviour is that I routinely use a number of pdf viewers and printers. They all present line thicknesses and colours slightly differently. Especially Sumatra pdf compared to most others.<o:p></o:p></p><p class="MsoNormal"><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 style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Therion <<a href="mailto:therion-bounces@speleo.sk">therion-bounces@speleo.sk</a>> <b>On Behalf Of </b>Martin Budaj<br><b>Sent:</b> Wednesday, 11 August 2021 07:23<br><b>To:</b> List for Therion users <<a href="mailto:therion@speleo.sk">therion@speleo.sk</a>><br><b>Subject:</b> Re: [Therion] Plan gridline colour changes unpredictably<o:p></o:p></span></p></div><p class="MsoNormal"><o:p> </o:p></p><div><p class="MsoNormal">Hi,<o:p></o:p></p><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">0.5white doesn't work in CMYK properly (it's equivalent to 0.5*(0,0,0,0) = (0,0,0,0) = white)<o:p></o:p></p><div><p class="MsoNormal">0.1black doesn't work in RGB (it's 0.1*(0,0,0) = (0,0,0) = black)<o:p></o:p></p></div></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">So your formula produces 50% gray in RGB and 10% gray in CMYK. No idea why you got 10% gray in some RGB setups, some test data would be needed.<o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">To get 10% grey colour you need to use 0.1<span class="gmail-x">[w</span>hite,black<span class="gmail-x">] which works in all RGB, CMYK and Grayscale.</span><o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">Cheers<o:p></o:p></p></div><div><p class="MsoNormal">Martin <o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div></div><p class="MsoNormal"><o:p> </o:p></p><div><div><p class="MsoNormal">On Tue, Aug 10, 2021 at 11:29 AM Bruce Mutton <<a href="mailto:bruce@tomo.co.nz">bruce@tomo.co.nz</a>> wrote:<o:p></o:p></p></div><blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"><div><div><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Curious<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I have in my layout some metapost code to redefine the plan gridlines, used without apparent problem for perhaps 10 years. It includes a colour specification…<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">withcolor 0.1black+0.5white;<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Mostly they come out like this, very light grey. This example is exported using colour-model cmyk, but most of the time using colour-model rgb it looks exactly the same, in my current project (only variables are colour map-fg, some map previews on or off and the colour model).<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><image002.jpg><o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">For some reason, in my current project, if I use colour-model rgb for a particular output variant, I get a much darker gridline, as below. Other variants with rgb, the colour of the gridline matches the first example.<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><image004.png><o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Any hints as to why the difference?<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I might have expected this to occur with the new cmyk colour model, but it does not.<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">So far it has only happened with in a single specific case when using the rgb colour model. I’ll watch for more cases…<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Bruce<o:p></o:p></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p></div></div><p class="MsoNormal">_______________________________________________<br>Therion mailing list<br><a href="mailto:Therion@speleo.sk" target="_blank">Therion@speleo.sk</a><br><a href="https://mailman.speleo.sk/listinfo/therion" target="_blank">https://mailman.speleo.sk/listinfo/therion</a><o:p></o:p></p></blockquote></div></div></div></blockquote><blockquote type="cite"><div dir="ltr"><span>_______________________________________________</span><br><span>Therion mailing list</span><br><span><a href="mailto:Therion@speleo.sk">Therion@speleo.sk</a></span><br><span><a href="https://mailman.speleo.sk/listinfo/therion">https://mailman.speleo.sk/listinfo/therion</a></span><br></div></blockquote></div></body></html>