[NTG-context] table cell minimum heights -- help needed
Hi all, I am attempting to process html tables that are styled using css, and I have problem with the ‘height’ property. CSS (or rather, the html browser) interprets ‘height’ as if it was a “minheight”, and if the content does not fit, it will just enlarge the height until it does fit. Needless to say: I want that same functionality from the ConTeXt table I am using to generate the PDF and not end up with text crossing row boundaries. And I cannot figure out how to do it, as neither bTABLE’s \bTD nor xtable’s \startxcell interpret a “minheight" parameter. And whatever I put in “height” becomes the absolute value of the cell height. Did I miss something? I cannot imagine that this problem has not come up before… Best wishes, Taco Example code: \starttext \bTABLE[frame=on] \bTR \bTD[height=20pt] \input tufte \eTD \eTR \eTABLE \blank[10*line] \startxtable[frame=on] \startxrow \startxcell[height=20pt] \input tufte \stopxcell \stopxrow \stopxtable \stoptext ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / 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 ___
[NTG-context] indented headings possible?
Hi again,
Is there a way to make section headings automatically honour the current
left- and rightskip? For example, like this:
\starttext
\showframe
\startnarrower[left]
\section{Section 1}
stuff
\stopnarrower
\stoptext
I know I could rig this up with
\dontleavehmode\vbox{\advance\hsize-\leftskip\section{Section 1}}\par
but that is horrible code. Is there any way to get the correct effect
using \setuphead ?
Best wishes,
Taco
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[NTG-context] \startnarrower
Is it possible to not indent the very first line of narrower content? Thus \startnarrower first line second line etc. \stopnarrower resulting in: first line second line etc. dr. Hans van der Meer ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / 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 ___
Re: [NTG-context] graphics
Hi Mikael,
Thank you, as ell as Alan and Henri, for giving us a simple way to use Bessel
functions, directly in ConTeXt.
However I have a question, which may show my total ignorance of the maths
libraries ffi and consorts: how do you specify the value of the integr $n$ when
you want to use $J_{n}(x)$?
Best regards: OK
> On 12 Dec 2018, at 21:13, Mikael P. Sundqvist wrote:
>
> On Wed, Dec 12, 2018 at 9:02 PM Henri Menke wrote:
>>
>> On 13/12/18 8:56 AM, Alan Braslau wrote:
>>> On Wed, 12 Dec 2018 20:42:56 +0100
>>> "Mikael P. Sundqvist" wrote:
Thanks, Alan! That looks very promising. I could not make it work,
though, and I guess that is because I use linux and do not know what
to change for what. I installed libcerf but I assume something else is
missing. In any case, this is one of the things it would be nice to
have, at least as a module. I have no idea on how to realize that,
though.
/Mikael
>>>
>>> You likely also need to install libffi - I do not know what package
>>> this is on your flavor of linux - Luigi is the ffi specialist!
>>
>> FFI is integrated in LuaTeX >= 1.03
>>
>> In you example you load libcerf but you are not using it. What you are
>> actually using are the Bessel function from the C Standard library. GCC
>> includes them as a GNU extension.
>> https://www.gnu.org/software/libc/manual/html_node/Special-Functions.html#index-j0
>> Your example also works if you remove libcerf (at least for me on Linux).
>>
>
> Thanks Henri! Indeed it worked now. The following example (just in
> case someone else did not get what to change) compiles here, and shows
> the expected graph. This is very good news!
>
> \startluacode
>
> ffi = require("ffi")
> ffi.cdef[[
> double j0(double x);
> double j1(double x);
> double jn(double x);
> ]]
>
> \stopluacode
>
> \startMPdefinitions{doublefun}
> vardef jzero primary x = scantokens(lua("mp.quoted( ffi.C.j0(" &
> decimal x & "))")) enddef ;
> vardef jone primary x = scantokens(lua("mp.quoted( ffi.C.j1(" &
> decimal x & "))")) enddef ;
> vardef jnprimary x = scantokens(lua("mp.quoted( ffi.C.jn(" &
> decimal x & "))")) enddef ;
> \stopMPdefinitions
>
>
> \starttext
> \startMPpage[instance=doublefun]
> draw function(1,"x","jone(x)",epsed(0),epsed(10),1/10) scaled 1cm;
> \stopMPpage
> \stoptext
>
> /Mikael
> ___
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> Wiki!
>
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Re: [NTG-context] graphics
Of course, it is:
double jn(int n,double x);
and
vardef jn(expr n, x) = scantokens(lua("mp.quoted( ffi.C.jn(" & decimal n & ","
& decimal x & "))")) enddef ;
Alan
(shows that I have yet to use jn ;-)
On Thu, 13 Dec 2018 14:32:39 +0100
Otared Kavian wrote:
> Hi Mikael,
>
> Thank you, as ell as Alan and Henri, for giving us a simple way to use Bessel
> functions, directly in ConTeXt.
> However I have a question, which may show my total ignorance of the maths
> libraries ffi and consorts: how do you specify the value of the integr $n$
> when you want to use $J_{n}(x)$?
>
> Best regards: OK
>
> > On 12 Dec 2018, at 21:13, Mikael P. Sundqvist wrote:
> >
> > On Wed, Dec 12, 2018 at 9:02 PM Henri Menke wrote:
> >>
> >> On 13/12/18 8:56 AM, Alan Braslau wrote:
> >>> On Wed, 12 Dec 2018 20:42:56 +0100
> >>> "Mikael P. Sundqvist" wrote:
>
> Thanks, Alan! That looks very promising. I could not make it work,
> though, and I guess that is because I use linux and do not know what
> to change for what. I installed libcerf but I assume something else is
> missing. In any case, this is one of the things it would be nice to
> have, at least as a module. I have no idea on how to realize that,
> though.
>
> /Mikael
> >>>
> >>> You likely also need to install libffi - I do not know what package
> >>> this is on your flavor of linux - Luigi is the ffi specialist!
> >>
> >> FFI is integrated in LuaTeX >= 1.03
> >>
> >> In you example you load libcerf but you are not using it. What you are
> >> actually using are the Bessel function from the C Standard library. GCC
> >> includes them as a GNU extension.
> >> https://www.gnu.org/software/libc/manual/html_node/Special-Functions.html#index-j0
> >> Your example also works if you remove libcerf (at least for me on Linux).
> >>
> >
> > Thanks Henri! Indeed it worked now. The following example (just in
> > case someone else did not get what to change) compiles here, and shows
> > the expected graph. This is very good news!
> >
> > \startluacode
> >
> > ffi = require("ffi")
> > ffi.cdef[[
> > double j0(double x);
> > double j1(double x);
> > double jn(double x);
> > ]]
> >
> > \stopluacode
> >
> > \startMPdefinitions{doublefun}
> > vardef jzero primary x = scantokens(lua("mp.quoted( ffi.C.j0(" &
> > decimal x & "))")) enddef ;
> > vardef jone primary x = scantokens(lua("mp.quoted( ffi.C.j1(" &
> > decimal x & "))")) enddef ;
> > vardef jnprimary x = scantokens(lua("mp.quoted( ffi.C.jn(" &
> > decimal x & "))")) enddef ;
> > \stopMPdefinitions
> >
> >
> > \starttext
> > \startMPpage[instance=doublefun]
> > draw function(1,"x","jone(x)",epsed(0),epsed(10),1/10) scaled 1cm;
> > \stopMPpage
> > \stoptext
> >
> > /Mikael
> > ___
> > If your question is of interest to others as well, please add an entry to
> > the Wiki!
> >
> > maillist : ntg-context@ntg.nl /
> > 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
> > ___
> >
>
> ___
> If your question is of interest to others as well, please add an entry to the
> Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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> wiki : http://contextgarden.net
> ___
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Re: [NTG-context] \startnarrower
Hans van der Meer schrieb am 13.12.18 um 12:15:
Is it possible to not indent the very first line of narrower content?
Thus
\startnarrower
first line
second line
etc.
\stopnarrower
resulting in:
first line
second line
etc.
Use a negative value for the indentation of the paragraph.
When you use the delimitedtext environment instead of narrower you can
do it with the indenting key.
\definedelimitedtext
[narrowtext]
[leftmargin=2em,
indenting={yes,-2em}]
\showframe [text] [text]
\starttext
\startdelimitedtext [narrowtext]
\samplefile{zapf}
\stopdelimitedtext
\stoptext
Wolfgang
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Re: [NTG-context] graphics
On Thu, Dec 13, 2018 at 4:45 PM Alan Braslau
wrote:
> Of course, it is:
>
> double jn(int n,double x);
>
> and
>
> vardef jn(expr n, x) = scantokens(lua("mp.quoted( ffi.C.jn(" & decimal n &
> "," & decimal x & "))")) enddef ;
>
> Alan
>
> (shows that I have yet to use jn ;-)
>
I often use this as reference
source/texk/web2c/luatexdir/luaffi/test.lua
--
luigi
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Re: [NTG-context] indented headings possible?
Taco Hoekwater schrieb am 13.12.18 um 11:12:
Hi again,
Is there a way to make section headings automatically honour the current
left- and rightskip? For example, like this:
\starttext
\showframe
\startnarrower[left]
\section{Section 1}
stuff
\stopnarrower
\stoptext
I know I could rig this up with
\dontleavehmode\vbox{\advance\hsize-\leftskip\section{Section 1}}\par
but that is horrible code. Is there any way to get the correct effect
using \setuphead ?
\setuphead
[section]
[aligntitle=yes]
\showframe [text] [text]
\starttext
\startnarrower[left]
\startsection[title={Section 1}]
stuff
\stopsection
\stopnarrower
\stoptext
Wolfgang
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Re: [NTG-context] Drops Module
Hi Aditya, thanks for the hint. I run into the same problem some time ago (also uploaded a new version). Sadly no final fix, because I had a naming problem (number part) with luajit some days later. The current (local) version works so far, but is a bit hackish (no time for a clean solution). I'll look into it on the weekend. Peter Am 10.12.2018 um 18:47 schrieb Aditya Mahajan: > Hi Peter, > > I noticed that the drops module recently stopping running with the error: > > /home/adityam/texmf/tex/context/third/drops/t-drops.lua:1098: bad > argument #3 to 'format' (number has no integer representation) > stack traceback: > [C]: in function 'string.format' > /home/adityam/texmf/tex/context/third/drops/t-drops.lua:1098: in > upvalue 'get_IM_paths' > /home/adityam/texmf/tex/context/third/drops/t-drops.lua:1380: in > field 'shadow' > [ctxlua]:1: in main chunk > > This is due to the change in Lua5.3 with respect to floating point > numbers. The simplest solution is to change '%d' to '%.0f' at > appropriate places. > > Thanks, > Aditya > ___ > > If your question is of interest to others as well, please add an entry > to the Wiki! > > maillist : ntg-context@ntg.nl / > 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 > ___ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / 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 ___
Re: [NTG-context] graphics
On 14/12/18 5:07 AM, luigi scarso wrote:
> On Thu, Dec 13, 2018 at 4:45 PM Alan Braslau
> wrote:
>
>> Of course, it is:
>>
>> double jn(int n,double x);
>>
>> and
>>
>> vardef jn(expr n, x) = scantokens(lua("mp.quoted( ffi.C.jn(" & decimal n &
>> "," & decimal x & "))")) enddef ;
>>
>> Alan
>>
>> (shows that I have yet to use jn ;-)
>>
>
> I often use this as reference
> source/texk/web2c/luatexdir/luaffi/test.lua
I have some Gists on GitHub using the FFI.
Binding interpreters of other scripting languages (so far Python, R,
Guile, and Lua):
https://gist.github.com/hmenke/2d57a3aa1d3d59a265f935dd4b384c36
Rendering SVG to PDF using Cairo and rsvg2:
https://gist.github.com/hmenke/9facc3fe5ede9ed46c1838a919f7376f#file-svg-to-pdf-lua
---
Some of the code on GitHub was inspired by answers of mine on the
StackExchange network. Here is a collection of answers using FFI. All
the answers from TeX Stack Exchange use LaTeX. ConTeXt is not so
popular there.
How to implement X11 code for LuaJIT's FFI?
https://stackoverflow.com/a/53689893
How to plot a function in integral form with TikZ?
https://tex.stackexchange.com/a/403797
https://tex.stackexchange.com/a/403794
Erf function in LaTeX
https://tex.stackexchange.com/a/407087
Plot a factorial function
https://tex.stackexchange.com/a/371899
Plot bessel functions
https://tex.stackexchange.com/a/368692
https://tex.stackexchange.com/a/456772
https://tex.stackexchange.com/a/160749
(Lua) LaTeX & HeVeA with partly generated things
https://tex.stackexchange.com/a/429994
How to include SVG diagrams in LaTeX?
https://tex.stackexchange.com/a/408014
>
>
> ___
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> Wiki!
>
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[NTG-context] unicode table in the fontloader
Since 29.11 l-unicode.lua disables the slnunicode library with unicode = nil Functions from unicode.utf8 are used in various packages (latex and plain). They are documented in the luatex manual. Simply disabling them is not really an option for us. As we import l-unicode.lua through the lualibs package, this means that I currently have to revert the change manually. Would it be possible to disable the table only in context? Side question: are there any plans to remove the library from the binary? -- Ulrike Fischer https://www.troubleshooting-tex.de/ ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / 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 ___
