[NTG-context] Footnotes on the bottom of the column's current page, instead of the columns' end
>
>
> Hello, I'm trying to achieve a look similar to a magazine our religious
organization frequently discusses, but unfortunately can't find the correct
settings to do so. Whenever I call a custom note on a column, instead of
the note showing on the bottom of the page, it shows at the end of the
column. (like an endnote, except, it shows as a small footnote at the
beginning)
How should I make it shown on the bottom of the page of the current
footnote instead of the end of the column command?
My MWE:
\definenote[question][textcommand=\gobbleoneargument, numbercommand=\gobbleoneargument]
\setupnotation[question][counter=]
\startdocument
\startcolumns[n=2, balanced]
\dorecurse{19}{
\question{1. This is a question for discussion. I wished it was on the current page instead of the end}
\input{knuth}
}
\stopcolumns
\stopdocument
mwe.pdf
Description: Adobe PDF document
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[NTG-context] Re: Combining python and lua
On Wed, 25 Oct 2023, Alexandre Christe wrote: > Dear list, > > I’d like to know the best approach to make this a bit more usable. I’m trying > to typeset a table with sin/cos/tan values. I’d like to be able to convert > the angles in degrees into radians (with math notation) and to compute the > trigonometric function leading to sin(pi/4) = 1/2, or cos(pi/6) = sqrt(3)/2 > and display it in math mode. > > Here’s my current MWE, where I fail to convert the angles in radians there is math.sind, cosd, etc. for computing sin for angle in degrees. The implementation is l-math.lua is: local pipi = 2*math.pi/360 function math.sind(d) return sin(d*pipi) end function math.cosd(d) return cos(d*pipi) end function math.tand(d) return tan(d*pipi) end > and fail to display the result in symbolic form. Context doesn't do symbolic math. You can try checking if one of the symbolic math libraries in lua provides all the features that you want. > One possible way would be to use Python and the t-filter module, like this This can work as follows. Take the array of angles, and convert them to the desired format in python and write them to a temp file. Read that temp file in lua and typeset it as you want. Another option is an old proof of concept by Luigi: https://github.com/bastibe/lunatic-python which allowed two-way communication between python and luatex. Not sure if it still works. Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] Re: Combining python and lua
On 25 Oct 2023, at 16:45, Alexandre Christe wrote:
>
> Dear list,
>
> I’d like to know the best approach to make this a bit more usable. I’m trying
> to typeset a table with sin/cos/tan values. I’d like to be able to convert
> the angles in degrees into radians (with math notation) and to compute the
> trigonometric function leading to sin(pi/4) = 1/2, or cos(pi/6) = sqrt(3)/2
> and display it in math mode.
You can use templates to subtitute values into a string and then send that out
to be typeset.
For example: if you want to turn "sin(pi/4) = 1/2" to
\startformula
\sin{\frac{\pi}{4}} = \frac{1}{2}
\stopformula
Then use this Lua code:
local myTrigTemplate = [[
\startformula
\%fname%{\frac{\pi}{%divisor%}} = \frac{%numerator%}{%denominator%}
\stopformula
]]
context.templates[myTrigTemplate] {
fname = "sin",
divisor = 4,
numerator = 1,
denominator = 2
}
By combining them (using the result of a simple template as the parameter value
into a larger template) you can create a function similar to Python's latex()
that handles the trig functions you are using. That is the easy bit.
Converting the angle into radians and then getting the result as a fraction of
pi requires you to implement a continued fraction algorithm to determine
numerator and denominator.
Extending that to determine whether to use sqrt(3)/2 instead of some other
fractional approximation is another significant step up in complexity.
I can send you some code that does that - but it's written in HP-71 BASIC so
you'll have to adapt it. :-)
The real question is: do you really want to be able to generate an expression
from *any* initial angle value or just those in your table? If it's just those
in your table then I think it would be much, much less effort to extend
'angleList' with accompanying lists holding the values to substitute into the
template. Or even just typeset the whole table by hand (prepare a list of the
expressions and use editor macros to ConTeXtify them).
Regards,
—
Bruce Horrocks
Hampshire, UK
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[NTG-context] Combining python and lua
Dear list,
I’d like to know the best approach to make this a bit more usable. I’m trying
to typeset a table with sin/cos/tan values. I’d like to be able to convert the
angles in degrees into radians (with math notation) and to compute the
trigonometric function leading to sin(pi/4) = 1/2, or cos(pi/6) = sqrt(3)/2 and
display it in math mode.
Here’s my current MWE, where I fail to convert the angles in radians and fail
to display the result in symbolic form.
\starttext
\startluacode
local angleList = {0, 30, 45, 60, 90, 120, 135, 150, 180, 210, 225, 240, 270,
300, 315, 330, 360}
context.bTABLE()
context.bTR()
context.bTD() context("$x$") context.eTD()
context.bTD() context("$0$") context.eTD()
for _, a in ipairs(angleList) do
context.bTD() context("$\letterpercent.0f$",a) context.eTD()
end
context.eTR()
context.bTR()
context.bTD() context("$\\cos(x)$") context.eTD()
for _, a in ipairs(angleList) do
context.bTD() context("$\letterpercent.3f$",math.cos(math.rad(a)))
context.eTD()
end
context.eTR()
context.bTR()
context.bTD() context("$\\sin(x)$") context.eTD()
for _, a in ipairs(angleList) do
context.bTD() context("$\letterpercent.3f$",math.sin(math.rad(a)))
context.eTD()
end
context.eTR()
context.bTR()
context.bTD() context("$\\tan(x)$") context.eTD()
for _, a in ipairs(angleList) do
if a == 90 or a == 270 then
context.bTD() context("$-$") context.eTD()
else
context.bTD() context("$\letterpercent.3f$",math.tan(math.rad(a)))
context.eTD()
end
end
context.eTR()
context.eTABLE()
\stopluacode
\stoptext
\stoptext
One possible way would be to use Python and the t-filter module, like this
\usemodule[filter]
%It depends on your OS. In mine it's python3
\defineexternalfilter
[pythontyping]
[filtercommand={python3 \externalfilterinputfile \space >
\externalfilteroutputfile},
output={\externalfilterbasefile.tex},
cache=yes,
readcommand=\typefile,
spacebefore=medium,
spaceafter=medium]
%We copy settings to save typing
\defineexternalfilter[pythonformula][pythontyping]
%But instead of typing, we input a formula
\setupexternalfilter[pythonformula]
[readcommand=\samplefile] %\input should also work
\starttext
Convert angle to radians:
$\startpythonformula
from sympy import *
print(latex(pi/180*60))
\stoppythonformula$
Compute trigonometric function:
$\startpythonformula
from sympy import *
print(latex(cos(pi/3)))
\stoppythonformula$
\stoptext
However, I haven’t managed so far to combine things (lua and Python) in an
automatic way.
How should I proceed?
A. Christe
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