Re: [NTG-context] Marginal line numbers
On Thu, Dec 16, 2010 at 1:34 PM, Wolfgang Schuster schuster.wolfg...@googlemail.com wrote: Am 16.12.2010 um 22:28 schrieb Jon Crump: In python-speak I'd interpret context.color() as a method call on a module 'context'. Could you, or anyone, direct me to any documentation for this module and a list of the properties and methods that it supports? http://pragma-ade.com/show-man-44.htm Wolfgang Wolfgang, many thanks. Jon ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Marginal line numbers
On Dec 16, 2010, at 10:28 PM, Jon Crump wrote:
Thomas, et alia.
Thanks so very much! I now have this:
\startluacode
function filter(s)
if math.mod(s,5) == 0 then
context.color( { darkred }, s )
end
end
\stopluacode
\define[1]\MyNumber%
{\ctxlua{filter(#1)}\endgraf}
\startxmlsetups xml:lb
\lineNumbers{\MyNumber{\xmlatt{#1}{n}}}
\xmlflush{#1}
\stopxmlsetups
\defineinmargin [lineNumbers] [outer] [normal]
This was just an example to show you how to use lua to do things which are
difficult or impossible or cumbersome in TeX alone, such as math, working with
strings (substitutions, etc.), conditionals, loops... You don't have to take my
code verbatim; the darkred was just meant to show that you can apply certain
code to a number if it matches a condition (here: be divisible by 5).
This gets me what I wanted. Still fumbling greatly with the macro
syntax. I'm not sure what the recursion is for, for example. On the
other hand the lua seems rather straightforward to me by comparison. I
tried returning an empty string like this: context.color( {blue}, ''
) to remove the other numbers, but that seemed silly, so I just
removed the 'else' clause instead, and that seemed to work as well.
Yes, of course, if all you want is process numbers divisible by 5, that's the
easiest way. But it's good to know that lua allows more complex conditionals -
you could use elseifs to make numbers divisible by 100 bold, or whatever. I
find such conditionals in TeX much more cumbersome; even for somebody with no
programming background like myself, they are easy to write in lua.
The recursion was just a way of demonstrating the effect. \dorecurse is a
wonderful macro to construct minimal examples (you can search the mail archive
for some real gems). And, as a hint: constructing a compilable minimal example
not only is educational (I don't know how often I could solve my problems when
I tried to produce a minimal example and saw where my approach was failing),
but will also improve your chances of people actually willing to help you. If
you want to see an elegant way of producing minimal examples in xml, search the
mail archive for xmlprocessbuffer.
Thomas
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Wiki!
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___
Re: [NTG-context] Marginal line numbers
On Dec 16, 2010, at 10:28 PM, Jon Crump wrote:
Thomas, et alia.
Thanks so very much! I now have this:
\startluacode
function filter(s)
if math.mod(s,5) == 0 then
context.color( { darkred }, s )
end
end
\stopluacode
\define[1]\MyNumber%
{\ctxlua{filter(#1)}\endgraf}
\startxmlsetups xml:lb
\lineNumbers{\MyNumber{\xmlatt{#1}{n}}}
\xmlflush{#1}
\stopxmlsetups
\defineinmargin [lineNumbers] [outer] [normal]
This was just an example to show you how to use lua to do things which are
difficult or impossible or cumbersome in TeX alone, such as math, working with
strings (substitutions, etc.), conditionals, loops... You don't have to take my
code verbatim; the darkred was just meant to show that you can apply certain
code to a number if it matches a condition (here: be divisible by 5).
This gets me what I wanted. Still fumbling greatly with the macro
syntax. I'm not sure what the recursion is for, for example. On the
other hand the lua seems rather straightforward to me by comparison. I
tried returning an empty string like this: context.color( {blue}, ''
) to remove the other numbers, but that seemed silly, so I just
removed the 'else' clause instead, and that seemed to work as well.
Yes, of course, if all you want is process numbers divisible by 5, that's the
easiest way. But it's good to know that lua allows more complex conditionals -
you could use elseifs to make numbers divisible by 100 bold, or whatever. I
find such conditionals in TeX much more cumbersome; even for somebody with no
programming background like myself, they are easy to write in lua.
The recursion was just a way of demonstrating the effect. \dorecurse is a
wonderful macro to construct minimal examples (you can search the mail archive
for some real gems). And, as a hint: constructing a compilable minimal example
not only is educational (I don't know how often I could solve my problems when
I tried to produce a minimal example and saw where my approach was failing),
but will also improve your chances of people actually willing to help you. If
you want to see an elegant way of producing minimal examples in xml, search the
mail archive for xmlprocessbuffer.
Thomas
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] Marginal line numbers
Thomas, et alia.
Thanks so very much! I now have this:
\startluacode
function filter(s)
if math.mod(s,5) == 0 then
context.color( { darkred }, s )
end
end
\stopluacode
\define[1]\MyNumber%
{\ctxlua{filter(#1)}\endgraf}
\startxmlsetups xml:lb
\lineNumbers{\MyNumber{\xmlatt{#1}{n}}}
\xmlflush{#1}
\stopxmlsetups
\defineinmargin [lineNumbers] [outer] [normal]
This gets me what I wanted. Still fumbling greatly with the macro
syntax. I'm not sure what the recursion is for, for example. On the
other hand the lua seems rather straightforward to me by comparison. I
tried returning an empty string like this: context.color( {blue}, ''
) to remove the other numbers, but that seemed silly, so I just
removed the 'else' clause instead, and that seemed to work as well.
In python-speak I'd interpret context.color() as a method call on a
module 'context'. Could you, or anyone, direct me to any documentation
for this module and a list of the properties and methods that it
supports?
On Wed, Dec 15, 2010 at 11:34 PM, Thomas A. Schmitz
thomas.schm...@uni-bonn.de wrote:
This is easy with a lua function. Since you know python, I guess the
following example will be easy for you:
\startluacode
function filter(s)
if math.mod(s,5) == 0 then
context.color( { darkred }, s )
else
context.color( { darkblue }, s )
end
end
\stopluacode
\define[1]\MyNumber%
{\ctxlua{filter(#1)}\endgraf}
\starttext
\dorecurse{25}{\MyNumber{\recurselevel}}
\stoptext
This should get you going, I hope
Good luck
Thomas
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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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] Marginal line numbers
Am 16.12.2010 um 22:28 schrieb Jon Crump: In python-speak I'd interpret context.color() as a method call on a module 'context'. Could you, or anyone, direct me to any documentation for this module and a list of the properties and methods that it supports? http://pragma-ade.com/show-man-44.htm Wolfgang ___ 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://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Marginal line numbers
On Dec 14, 2010, at 9:33 PM, Jon Crump wrote:
All,
Thanks to Thomas's help, I've been making my way up the learning curve.
My TEI xml has empty lb elements indicating lines in the original and
corresponding lb elements in the translation. I'd like to be able to
set these numbers in the margin so that readers may coordinate the
lineation. So far I have this:
\startxmlsetups xml:lb
\lineNumbers{\xmlatt{#1}{n}}
\xmlflush{#1}
\stopxmlsetups
\defineinmargin [lineNumbers] [outer] [normal]
which works, but I'd like to be able to set only every fifth or tenth
line number. Is there a way to perform some arithmetic on the value of
the n attribute and then execute \lineNumbers accordingly?
for example:
if n%5 == 0 then \lineNumbers else ignore lb
Thanks,
Jon
This is easy with a lua function. Since you know python, I guess the following
example will be easy for you:
\startluacode
function filter(s)
if math.mod(s,5) == 0 then
context.color( { darkred }, s )
else
context.color( { darkblue }, s )
end
end
\stopluacode
\define[1]\MyNumber%
{\ctxlua{filter(#1)}\endgraf}
\starttext
\dorecurse{25}{\MyNumber{\recurselevel}}
\stoptext
This should get you going, I hope
Good luck
Thomas
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
