-------- Forwarded Message --------
Subject: Re: [NTG-context] The binomial coefficients do not look optimal
Date: Sat, 2 Sep 2017 18:35:53 +0200
From: Hans Hagen <[email protected]>
To: Mikael P. Sundqvist <[email protected]>
On 9/2/2017 4:58 PM, Mikael P. Sundqvist wrote:
On Fri, Sep 1, 2017 at 7:49 PM, Hans Hagen <[email protected]
<mailto:[email protected]>> wrote:
On 9/1/2017 1:56 PM, Mikael P. Sundqvist wrote:
Hi,
I stumbled upon this (see the attached file for the result):
%%% Test file
\setupbodyfont[10pt]
\starttext
\startTEXpage[offset=10pt]
\type{\tbinom{n}{k}}: $\tbinom{n}{k}$, (does not look good, the
vertical space between $n$ and $k$ is too big) \par
\type{\binom{n}{k}}: $\binom{n}{k}$ (looks fine to me)\par
\type{\dbinom{n}{k}}: $\dbinom{n}{k}$ (does not look good, too
big parenthesis, even for displayed formulas).\par
\stopTEXpage
\stoptext
%%% End of test file
I think something should be changed to get the binomial
coefficients to look better. In particular I am concerned about
the rather big parenthesis in displaystyle (and not so much
about the vertical space issue in \tbinom).
/Mikael
PS The result looked better if I used the lucida fonts, if that
helps.
This is indeed font dependent. These binoms use a low level tex
primitive that uses a threshold for steps and that one is part of
the math parameters of a font and these are not that good for lm. As
I'm looking into some other low level side effect I was in the mood
for a configuration option for \setupmathfractions.
So, in the next beta you can get the effects iof the attached:
- relate the threshold to the bodyfont size
- use normal left/right fences instead
fwiw, cambria and pagella look better too. Upto you to wikify it.
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl
<http://www.pragma-ade.nl> | www.pragma-pod.nl
<http://www.pragma-pod.nl>
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Thank you very much, I'm looking forward to the next beta, and I will
try to wikify it when I have tried it out. Also lucida looks better than
latin modern does at the moment.
I am a bit confused about the different versions. I would have guessed
that there was \tbinom and \dbinom and that \binom used one of them
depending on if one is in text mode or in display mode (just as I would
expect \frac to behave like \tfrac in text mode and \dfrac in display
mode). But \tbinom looks very different from \binom in text mode (with
more vertical space). Is this on purpose? Have I missed something?
One can configure those things but the absense of rules and presence of
fences matters too (all kind of inter-this-or-that and
above-below-this-or-that playts a role).
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : [email protected] / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
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