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Diacritical marks on Greek letters
Posted: Sat Feb 18, 2012 1:16 pm
by d_abbatelli
Hello
I need to type (not in "formula style", but as plain text) a greek letter with a diacritical mark on top of it.
I'm able to type latin letters with the diacritical marks: I just type the letter, then I open the special characters and I add the diacritical marks.
When I use greek letters instead of latin letters, the same process doesn't work. I insert the greek letter (either inserting it from the "special characters" panel or directly switching my keyboard to greek and typing it) and then I add the mark, but it ends up after the letter and not on top of it.
Whit the "formula editor" I would just write:
to attain what I want, but then I can't change the font, the color and so on.
What can I do?
Re: Diacritical marks on greek letters
Posted: Sat Feb 18, 2012 2:27 pm
by Robert Tucker
Omega with a dot over it is not, I believe, used in either Modern or Ancient Greek and omega followed by Unicode U+0307 produces a dot to the right of the omega as you say.
In Math you should be able to change the font of the omega if you open the Symbols dialogue (from the icon in the toolbar or Tools>Catalog...), select the omega in Greek (or iGreek) and then click edit.
See here for changing the colour:
http://user.services.openoffice.org/en/ ... =7&t=11835
Re: Diacritical marks on greek letters
Posted: Sat Feb 18, 2012 3:51 pm
by acknak
U+03C9 GREEK SMALL LETTER OMEGA, followed by U+0307 COMBINING DOT ABOVE seems to work for me. The dot is not precisely centered over the character, but not far off.
Re: Diacritical marks on greek letters
Posted: Sat Feb 18, 2012 9:55 pm
by Robert Tucker
acknak wrote:U+03C9 GREEK SMALL LETTER OMEGA, followed by U+0307 COMBINING DOT ABOVE seems to work for me. The dot is not precisely centered over the character, but not far off.
I think it's another of those font things – better in some fonts than others.
Re: Diacritical marks on Greek letters
Posted: Mon Feb 20, 2012 8:43 am
by esperantisto
I have no problem typing in Greek letters including ones with dialytika and tonos (such as άύϋίϊόέήώ) using the Greek layout on Windows 7/OpenOffice.org 3.3.0/LibreOffice 3.4.4. So, please, provide more details on your problem.
Re: Diacritical marks on Greek letters
Posted: Mon Feb 20, 2012 11:28 am
by Robert Tucker
I think this may be something in mathematics. There is a dot notation "often used for time derivatives such as velocity and acceleration".
http://en.wikipedia.org/wiki/Notation_f ... rentiation
ω is often used for angular velocity
http://en.wikipedia.org/wiki/Angular_velocity
so ω with a dot over it would be angular acceleration (though that may also be represented as α).
http://en.wikipedia.org/wiki/Angular_acceleration
Re: Diacritical marks on Greek letters
Posted: Mon Feb 20, 2012 3:49 pm
by RGB
Robert Tucker wrote:I think it's another of those font things – better in some fonts than others.
Indeed

- omega-dot.png (9.94 KiB) Viewed 9337 times
ω followed by U+0307 combining character