Wolfgang Schuster írta:

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I would like to set up Tex Gyre Adventor sans serif font as my math font (even if it doesn't havemath symbols). I have two questions related to this problem.

1. In latex I can specify math font versions, define a specific font as math serif / normal, another as mathsans serif etc. (http://milde.users.sourceforge.net/LUCR/Math/math-font-selection.xhtml). Is this possiblein context, and if yes, how?

ConTeXt doesn’t use the same style switches as LaTeX.

Thanks. Is there a way to change font family locally in math mode? For example how can I use serif if sans serif is the default math font?

3. You can use the font fallback mechanism to replace certain character in the math font with characters from a text font.

\definefontfamily     [mathfont] [rm] [Tex Gyre Bonum] \definefallbackfamily [mathfont] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic] \definefallbackfamily [mathfont] [mm] [Tex Gyre Adventor] [tf=style:italic,range=0x068,offset=0x0210E]% Planck constant \definefontfamily     [mathfont] [mm] [Tex Gyre Pagella Math]

\setupbodyfont[mathfont,10pt]

I played a lot with these setups and have questions. I use this font setting: \definefontfamily [docuf] [rm] [TeX Gyre Bonum] \definefontfamily [docuf] [ss] [TeX Gyre Adventor] \definefontfamily [docuf] [tt] [Latin Modern Mono] [features=none] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercasenormal]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercasebold]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercaseitalic]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:uppercasebolditalic]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercasenormal]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercasebold]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:lowercasebolditalic]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsnormal]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsbold]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsitalic]%,scale=.6] \definefallbackfamily [docuf] [mm] [Tex Gyre Adventor] [preset=math:digitsbolditalic]%,scale=.6] \definefontfamily [docuf] [mm] [TeX Gyre Pagella Math] \setupbodyfont[docuf,24pt] 1. If I want to use a scale factor is it possible the give the scale factor by using the preset a,b,c,d,x,xx values? Or I must specify the scale factors as numbers? 2. Scaling occurs compared to which font in the definition list? 3. I found that if I write \definefontfamily [docuf] [mm] [TeX Gyre Pagella Math] before \definefallbackfamily lines, the latter have no effect. Is this normal? Shouldn't the order of definition lines be indifferent? 4. If I write a paragraph with different font size, how can I scale the embedded math too automatically? For example if I write \placefigure[here]{Figure title}{\ss\tfxx A B C D \math{E~F~G~}} A B C D is typeset with small fonts but E F G not; it will be huge compared to A B C D. I can't manually scale the math part because it is inserted here by chemfig module and I can't redefine how it typesets fonts. Thanks in advance, bcsikos

Wolfgang Schuster írta: Thank you again. Now I am even more confused.

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3. I found that if I write \definefontfamily [docuf] [mm] [TeX Gyre Pagella Math] before \definefallbackfamily lines, the latter have no effect. Is this normal? Shouldn't the order of definition lines be indifferent? The fallbackfamily settings are applied to a typeface and the \definefontfamily commands creates the typeface, without \definefontfamily the fallbacks are never used because there is no font which can use the settings.

Sorry, but I don't understand the answer. If I have the code: \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic] \definefontfamily [documentfont] [mm] [TeX Gyre Pagella Math] then Tex Gyre Adventor font is used for math (\definefallbackfamily has effect). If I have this code: \definefontfamily [documentfont] [mm] [TeX Gyre Pagella Math] \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic] then Tex Gyre Pagella is used for math (\definefallbackfamily has no effect). According to your answer the opposite should happen, shouldn't? I am confused.

The x and xx perform not the same scaling as a, b etc. but you can define your own sizes which behave the same way as a etc.

\definefontsize[m] \definefontsize[n]

\definebodyfontenvironment[default][m=0.8,n=0.9]

OK. How can I use this setting together with \definefontfamily and \definefallbackfamily? I have this code: \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic] \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:uppercaseitalic] \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:uppercasenormal] \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:lowercasenormal] \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:digitsnormal] \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:digitsitalic] \definefontfamily [documentfont] [mm] [TeX Gyre Pagella Math] \setupbodyfont[documentfont,10pt] \definefontsize[m] \definefontsize[n] \definebodyfontenvironment[default][m=0.8,n=0.6] \starttext This paragraph contains text and $\tf math$. {\tfa This paragraph contains text and $\tf math$.} {\tfb This paragraph contains text and $\tf math$.} \stoptext The result in this case is italic math font. How can I have it upright? (If I comment out \definefontsize and \definebodyfontenvironment lines, the math font are upright.) Thank you in advance, bcsikos

Wolfgang Schuster írta: [...]

\definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic] \definefontfamily [documentfont] [mm] [TeX Gyre Pagella Math]

then Tex Gyre Adventor font is used for math (\definefallbackfamily has effect).

If I have this code:

\definefontfamily [documentfont] [mm] [TeX Gyre Pagella Math] \definefallbackfamily [documentfont] [mm] [Tex Gyre Adventor] [preset=math:lowercaseitalic]

then Tex Gyre Pagella is used for math (\definefallbackfamily has no effect).

According to your answer the opposite should happen, shouldn't? I am confused.

The \definefontfamily command creates a typeface which is used to load a font but after this point you can’t make changes to it.

I see, I didn't know this.

The \definefallbackfamily command let you assign additional characters for a font but this has to happen before the font is loaded, therefore \definefallbackfamily needs before \definefontfamily in the document.

It is clear now. Thank you a lot. bcsikos