missing characters

[Wolfgang Engelmann]

Am 08.05.23 um 11:32 schrieb Udicoudco:
> On Mon, May 8, 2023 at 12:11 PM Wolfgang Engelmann
> <engelmann at uni-tuebingen.de> wrote:
>>
>> In my lyx document (Koma script book) under no TeX (via LuaTX) I get
>> these errors:
>>
>> Missing character: There is no 𝜇 (U+1D707) in font
>> [LibertinusSerif-Regular.o
>> tf]:mode=base;script=latn;language=dflt;+tnum;+lnum;!
>> .
>> <argument> ...rdinate) and growth rate ($\mathrm {\mu m/sec}$
>>                                                     , red, right
>> ordinate) of ...
>>
> 
> Looks like you are using 

  will switch to the text font, which does not contain some
> of the mathematical symbols (greek letters in this case). Use \symup
> or \symrm instead.
> 
> If you want you can pass the option mathrm=sym to unicode math
> so that \mathrm will work as \symrm, but that can prevent kerning
> in operator names (\sin etc.).
> 
>> --
>> lyx-users mailing list
>> lyx-users at lists.lyx.org
>> http://lists.lyx.org/mailman/listinfo/lyx-users

Thanks, Udicoudco

where would
unicode-math and the \mathrm macro. > \mathrm
be set in LyX?
I can't see having done it anywhere in my document.
In Documents> settings > math options
I have set all options on
load automatically except ansmath

and in the preamble I use

\usepackage{libertinus-otf}
\setmonofont[Scale=MatchLowercase,FakeStretch=0.88,Ligatures=ResetAll]{AnonymousPro} 


and

% provides caption formatting
%\usepackage[font={it}]{caption}
\setkomafont{captionlabel}{\bfseries}
%\setkomafont{caption}{\footnotesize\itshape}
\setkomafont{caption}{\itshape}

Wolfgang