<div dir="ltr">Sorry to intrude, but when reading this a question popped into my head.<div>Is it possible to use @vo or another attribute to change the line in which a <rest> lies? This will help me with something I am working on.</div><div><br></div><div>Thank you!</div><div><br></div><div>Martha</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 4, 2017 at 11:16 AM, Daniel Alles <span dir="ltr"><<a href="mailto:DanielAlles@stud.uni-frankfurt.de" target="_blank">DanielAlles@stud.uni-frankfurt.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Thank you, Johannes, that really helped and made that clear. So I can continue using the Edirom-coordinates for ulx etc.<br>
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Zitat von Johannes Kepper <<a href="mailto:kepper@edirom.de" target="_blank">kepper@edirom.de</a>>:<div class="HOEnZb"><div class="h5"><br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Dear Daniel,<br>
<br>
that's a real confusion, and we need to make it clearer in the guidelines. *Pixel* coordinates are always with the origin in the top left corner. *Music* coordinates, however, are always bottom up. @ulx and so on are always in pixel units, but @vo (vertical offset) is specified in interline distances (half the distance between two staff lines, or, in other words, the vertical distance between a C4 and a D4, or any other two adjacent notes). If you want to specify that a dynamic is written above its default position, it seems more natural that values go up (i.e., @vo="3"). This means that for musical units the origin has to be bottom left. I know it's confusing in the guidelines, and we will address this at some point. If you don't mind, you're invited to prepare something on Git and submit a pull request ;-)<br>
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Hope this helps,<br>
jo<br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Am 04.07.2017 um 14:48 schrieb Daniel Alles <<a href="mailto:DanielAlles@stud.uni-frankfurt.de" target="_blank">DanielAlles@stud.uni-frankfur<wbr>t.de</a>>:<br>
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Dear all,<br>
<br>
at the moment, I am a little bit confused about how MEI defines its coordinate system: It is possible to add the attributes @ulx, @uly, @lrx and @lry to for example a surface, as written in part 12 of the Guidelines, which places the origin of the coordinate system in the upper left corner. All the examples in that part show that behavior, ulx/uly is always 0/0. This would correspond to the coordinate systems used in SVG and DOM and (which is what I use for my work) Edirom Editor. On the other hand it is written in part 22.3, that MEI uses a coordinate system in which "the y-axis points from bottom up". That would mean, that ulx/uly could never be 0/0.<br>
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So now my questions: Is it sufficient to use the coordinates like in the examples, with the origin in the upper left corner? Would that "override" MEIs original coordinate system? If not: Isn't the possibility to encode areas from top-left to bottom-right corners a semantic error in MEI, if the coordinate system is pointing from bottom-left to top-right?<br>
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Best,<br>
Daniel<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><i>Martha E. Thomae</i></div></div>
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