ntg-context June 2017

ntg-context@ntg.nl

39 participants
76 discussions

mathradical defaults to "normal", should it perhaps be "default"?
by Mikael P. Sundqvist 07 Jun '17

07 Jun '17

Hi, this might be a matter of taste. look at the output of (attached). In my opinion the first square root is to "high", while it looks better on the second line. From setup-en.pdf it looks like the default of \setupmathradical is set to normal (and not default). I don't understand what normal should mean, but I think the alternative=default looks better. (The lucida fonts are loaded in this example, since the effect is more clear for them). /Mikael \setupbodyfont[lucidaot] \starttext \startTEXpage[offset=2pt] \startformula \sqrt{1+x^2}\neq \frac{1}{\sqrt{1+x^2}} \stopformula %the default setting for mathradical seems to be "normal". We change it to "normal" \setupmathradical[sqrt][alternative=default] \startformula \displaystyle\sqrt{1+x^2}\neq \frac{1}{\sqrt{1+x^2}} \stopformula \stopTEXpage \stoptext

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aligning external figures
by Pablo Rodriguez 07 Jun '17

07 Jun '17

Dear list, I have the following sample: \setupexternalfigure[location=default, align=middle] \starttext \dontleavehmode\externalfigure[cow.pdf] \externalfigure[cow.pdf] \stoptext As you can see, \dontleavehmode makes no difference. Does anyone know how the align key in \setupexternalfigure works? Many thanks for your help, Pablo -- http://www.ousia.tk

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bug with hidden attachments?
by Pablo Rodriguez 06 Jun '17

06 Jun '17

Dear list, I have the following sample: \setupinteraction[state=start] \setupinteractionscreen[option=attachment] \setuppapersize[A5, landscape] \setuppagenumbering[location=] \starttext \startbuffer[abc] hola μαριόλα \stopbuffer This PDF document contains a visible attachment.\attachment[name=hidden.txt, title={χαλεπὰ τὰ καλά}, author=ConTeXt, subtitle=χαλεπὰ τὰ καλά, method=hidden, buffer=abc] This PDF document should contain the same hidden attachment (under a different name\attachment[name=visible.txt, title={χαλεπὰ τὰ καλά}, author=ConTeXt, subtitle=χαλεπὰ τὰ καλά, method=visible, buffer=abc]. \stoptext In short, the visible attachment is actually attached, but the hidden isn’t attached at all. Could anyone confirm the issue or tell me what I am missing? Many thanks for your help, Pablo -- http://www.ousia.tk

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Strange interaction between mathalignment and mathmatrix
by Henri Menke 06 Jun '17

06 Jun '17

Dear list, When I have a mathmatrix inside a mathalignment the numbering using \NR[+] does not work anymore. Instead it prints "[+]" on the next line. I guess the definition of \NR from mathmatrix leaks outside. Affects both TL2017 and latest beta. MWE is below. Cheers, Henri --- \definemathmatrix [pmatrix] [left=\left(,right=\right)] \starttext \startformula \startmathalignment \NC \sigma_x \NC= \startpmatrix \NC 0 \NC 1 \NR \NC 1 \NC 0 \NR \stoppmatrix \NR[+] \NC \sigma_y \NC= \startpmatrix \NC 0 \NC -i \NR \NC i \NC 0 \NR \stoppmatrix \NR[+] \NC \sigma_z \NC= \startpmatrix \NC 1 \NC 0 \NR \NC 0 \NC -1 \NR \stoppmatrix \NR[+] \stopmathalignment \stopformula \stoptext

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align inner items vertically
by Mikael P. Sundqvist 05 Jun '17

05 Jun '17

Hi, is it possible to align the inner itemgroup vertically with the outer enumeration, even if there is a "big" math expression? See the example below (where I have made the enumeration serried, just to see the _vertical_ misalignment better)? I think I miss something simple, but looking in setup-en.pdf I cannot find the necessary key. /Mikael %%% \defineenumeration[question][ text=, alternative=serried, ] \defineitemgroup[abc] \setupitemgroup[abc][each][a,horizontal,two,intro,nowhite][ stopper=, right=), ] \starttext This looks OK: \startquestion \blank[overlay] \startabc \startitem foo \stopitem \startitem bar \stopitem \stopabc \stopquestion Here, the 2 and a) are not vertically aligned: \startquestion \blank[overlay] \startabc \startitem $ \int_a^b f(x)\,dx$ \stopitem \startitem test \stopitem \stopabc \stopquestion \stoptext %%%

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overrule italics
by Florian Grammel 04 Jun '17

04 Jun '17

I have a long text with section headers partly in italics and/or emphasis. I'd like to setup the formatting in a way that overrules these. \setuphead[section][style=\tfb\up] In LaTeX there would be \upshape/\textup -- is there an equivalent in ConTeXt? Thanks in advance! Florian. ____________________________________________ Florian Grammel Copenhagen, Denmark

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Opentype features and space after comma in math mode
by Jose Luis Arellano 03 Jun '17

03 Jun '17

Hello list, Two questions: 1) How can i enable opentype features (onum, lnum, tnum) in math mode? 2) How can i avoid the space after comma in math mode? I tried this without success: \definefontfeature[default][default][onum=yes,lnum=no,tnum=no] \definefontfeature[lnum][default][onum=yes,lnum=no,tnum=no,mode=base] \definefontfamily[mainface][serif][TeX Gyre Pagella] \definefontfamily[mainface][math][TeX Gyre Pagella Math][features=lnum] \setupbodyfont[mainface] \starttext 1,123\par \m{1,123}\par \stoptext Thanks in advance...

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Upright font in math.
by Jose Luis Arellano 02 Jun '17

02 Jun '17

Dear list. What is the correct way to use upright (no italic) font in math mode? Thanks in advance.

2 2

Change kerning between math characters (prime and left parenthesis)
by Mikael P. Sundqvist 02 Jun '17

02 Jun '17

Hi! Now that the bug with primes is fixed in ConTeXt, I wonder if there is a way to change the kerning between certain characters in mathematics (in case one is not happy with the output from the font)? After reading in fonts-mkiv.pdf this is what I came up with: \startluacode fonts.handlers.otf.addfeature { name = "kerntest", type = "kern", data = { [0x61] = { [0x62] = -150 }, -- a and b in text [0x1d44e] = { [0x1d44f] = -150 }, -- mathematical italic small a and b [0x02032] = { [0x00028] = -150 }, -- prime and left parenthesis } } \stopluacode \definefontfeature[kerntest][kerntest=yes] \definefontfamily[lucidaopentype][rm][Lucida Bright OT] \definefontfamily[lucidaopentype][mm][Lucida Bright Math OT] \setupbodyfont[lucidaopentype,10pt] \startTEXpage[offset=3pt] abba $abba f'(x)$ \addff{kerntest} abba $abba f'(x)$ I prefer $f'\mkern-3mu(x)$ \stopTEXpage The output is attached as a png file. As you see the kerning works as expected in text mode, but not at all in math mode, even not for the a and b (which I hope I entered correctly). Something like the third line is what I'm after, but not having to use \mkern in all places. Is it possible? /Mikael PS: This is a cross post of the question https://tex.stackexchange.com/q/372857/52406, where I got the suggestion to ask on the list.

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Math mode: Vertical space between cases.
by Jose Luis Arellano 01 Jun '17

01 Jun '17

Dear list. How can I increase vertical space between cases? \startformula f(x)= \startmathcases[style=\displaystyle] \NC \frac{3}{10}\;, \NC if \math{x=2} \NR \NC \frac{k+9}{6}\;, \NC if \math{x=3} \NR \NC \frac{h}{16}\;, \NC if \math{x=4} \NR \stopmathcases \stopformula

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ntg-context June 2017