Re: [NTG-context] Some questions about context

5 Mar 2007

      Well, thank you very much to all of you: Wolfgang, Aditya and Mojca.

First of all thank you for answering to what I want (in latex groups 
people use to answer "this can't be done" or "do you really want that?")

And secondly, wow!! you provided very amount of information: examples 
and code. Good!!! More than ever I imagine

I will study all of that

Thanks,
Xan.

PS: Yes, I refer to xyfig. And my version is
texexec --version

  TeXExec 5.2.4 - ConTeXt / PRAGMA ADE 1997-2005

                texexec : TeXExec 5.2.4 - ConTeXt / PRAGMA ADE 1997-2005
                texutil : TeXUtil 9.0.0 - ConTeXt / PRAGMA ADE 1992-2004
                    tex : pdfeTeX, 3.141592-1.21a-2.2 (Web2C 7.5.4)
                context : ver: 2005.01.31
                cont-en : ver: 2005.01.31  fmt: 2006.6.1  mes: english

         total run time : 1 seconds

in ubuntu system

En/na Wolfgang Schuster ha escrit:
...
On Mon, 05 Mar 2007 13:43:51 +0100
Xan  wrote:
...
Hi,
Hi Xan,
...
I'm new user of context. I gone from latex, which I use in the last 5 
years intensively
I read your wiki but I don't find some answers to my wishes. Basically I 
want to know what are the equivalent of latex commands/packages in 
context. Can you help me in thay?. Thanks in advance.... so let's go:
1) The first question is about landscape mode and xdvi. In latex, if we 
want landscape, we put:
\documentclass[a4paper,10ptt,landscape]{article}
but when we see .dvi in xdvi, xdvi does not detects automatically that 
it's in landscape mode.
For that, we have to put:
\usepackage[dvips,...]{geometry}
now the xdvi show .dvi in landscape mode
The question is, how we get the same in context?. If we put:
\setuppapersize[A4,landscape][A4,landscape]
the xdvi program does not detect that .dvi is in landscape mode. Is 
there an equivalent command of geometry that allow that?
ConTeXt use PDF as default output format. A short test with the dvips
way show a rotated content but the page is not roatated, this seems to
be not suported
...
2) In latex there is the fancyhdr package that allows to put lines at 
bottom and at top of the page and put right and left headings and 
footers like: \rhead{Hello} ....
What is the equivalent in context?
The ConTeXt method for headers is:
\setupheadertexts[centered on odd and even page]
\setupheadertexts[left on odd and even page][right on odd and even page]
\setupheadertexts[left on even page][right on even page]
                 [left on odd page][right on odd page]
The same methos id used for footer with \setupfootertexts instead of
\setupheadertexts.
I attached a file that provides another way to set the headers and
footers in your document. You can use it with the command 
\usemodule[wolf-txt]. A few examples can be found in the source.
...
3) Is there an equivalent to the package lastpage in context? So can we 
put [number of page]/[total number of pages] at the bottom of the page?
\setupfootertexts[\pagenumber/\lastpage]
...
4) How can we create new counters in context? Like latex 
\newcounter{mycount}
You can use the plain TeX command \newcount\mycount or the ConTeXt
command \newcounter\mycount to create a counter. The ConTeXt methos
provides also the two commands \increment\mycount to increase your own
counter by one and the command \decrement\mycount to reduce your own
counter by one.
...
5) In mathematics, in context there are three modules: "nath", "amsl", 
"new math", according to http://wiki.contextgarden.net/Math
What are these features and limitations? What is the "best"?
ConTeXt provides now many functions from these modules by default.
Aditya wrote a few articles about the new option for maths in his My
Ways and at the wiki.
Please take a look at the following articles
http://dl.contextgarden.net/myway/mathalign.pdf
http://dl.contextgarden.net/myway/matharrows.pdf
...
6) Is there an equivalent module of xyfig?
Do you mean xypic?
Take a look at Tikz/Pgf:
http://sourceforge.net/projects/pgf/
or MetaPost/MetaFun:
http://wiki.contextgarden.net/MetaPost
http://wiki.contextgarden.net/MetaFun
bot come with their own manuals.
...
7) Is there an equivalence of amssymbols?. How can I display for example 
$x \leadsto \int_a^b \arcsin (x+\cos \alhpa)$?
This should work by default. AFAIK the AMS symbols are enabled by
default in ConTeXT. A short test worked without problems.
...
8) How can we do a "minipage" in context?
You can use the more powerful frame environemnt.
\starttext
\framed[width=6cm,align=right]{\readfile{knuth}\donothing\donothing}
\stoptext
...
9) Can you tell me some link about babel and hipernation?
You set the language for your document with the \mainlanguage[xx] and
the \language[xx] commands where "xx" stands for your language id as
"en" for english.
...
Thank you very much,
Xan.
Wolfgang
------------------------------------------------------------------------
%D \module
%D   [       file=wolf-txt,
%D        version=2006.10.28,
%D          title=\CONTEXT\ User Module,
%D       subtitle=Texts,
%D         author=Wolfgang Schuster,
%D           date=\currentdate,
%D      copyright=Wolfgang Schuster]
\writestatus{loading}{Context User Module / Texts}
\unprotect
\startnotmode[wolf]
\def\????tx{@@@@tx}
\def\useifdefined#1%
    {\ifcsname#1\endcsname
       \csname#1\endcsname
     \fi}
\stopnotmode
%D \macros
%D  {settoptexts, setheadertexts, settexttexts,
%D   setfootertexts, setbottomtexts}
%D
%D \starttyping
%D \setheadertexts
%D   [reset]
%D
%D \setheadertexts
%D   [left=odd left,middle=odd middle,right=odd right]
%D
%D \setheadertexts
%D   [text]
%D   [left=odd left,middle=odd middle,right=odd right]
%D
%D \setheadertexts
%D   [left=odd left,middle=odd middle,right=odd right]
%D   [left=even left,middle=even middle,right=even right]
%D
%D \setheadertexts
%D   [text]
%D   [left=odd left,middle=odd middle,right=odd right]
%D   [left=even left,middle=even middle,right=even right]
%D \stoptyping
\def\settoptexts    {\doquadrupleempty\dosetextendedtexts[\v!top]}
\def\setheadertexts {\doquadrupleempty\dosetextendedtexts[\v!header]}
\def\settexttexts   {\doquadrupleempty\dosetextendedtexts[\v!text]}
\def\setfootertexts {\doquadrupleempty\dosetextendedtexts[\v!footer ]}
\def\setbottomtexts {\doquadrupleempty\dosetextendedtexts[\v!bottom]}
%\def\dosettextcontent[#1][#2][#3][#4][#5]% header text middle text/text
%  {\iffifthargument
%     \setvalue{\??tk#1#2\executeifdefined{:\c!text:#3:}\c!middletext}%
%       {\dodoubletexts{\??tk#1}{#2}%
%          {\c!leftstyle \c!leftcolor \c!leftwidth }{#4}%
%          {\c!rightstyle\c!rightcolor\c!rightwidth}{#5}}%
%   \else\iffourthargument
%     \setvalue{\??tk#1#2\executeifdefined{:\c!text:#3:}\c!middletext}%
%       {\dodoubletexts{\??tk#1}{#2}%
%          {\c!leftstyle \c!leftcolor \c!leftwidth }{#4}%
%          {\c!rightstyle\c!rightcolor\c!rightwidth}{#4}}%
%   \else\ifthirdargument
%     \setvalue{\??tk#1#2\c!middletext}%
%       {\dodoubletexts{\??tk#1}{#2}%
%          {\c!leftstyle \c!leftcolor \c!leftwidth }{#3}%
%          {\c!rightstyle\c!rightcolor\c!rightwidth}{#3}}%
%   \fi\fi\fi}
\def\dosetextendedtexts[#1][#2][#3][#4]%
  {\iffourthargument
     \getparameters[\????tx\v!left] [#3]
     \getparameters[\????tx\v!right][#4]
     \dodosetextendedtexts{#1}{#2}
   \else\ifthirdargument
     \doifinsetelse{#2}{\v!text,\v!margin,\v!edge}
       {\getparameters[\????tx\v!left] [#3]
        \getparameters[\????tx\v!right][#3]
        \dodosetextendedtexts{#1}{#2}}
       {\getparameters[\????tx\v!left] [#2]
        \getparameters[\????tx\v!right][#3]
        \dodosetextendedtexts{#1}\v!text}
   \else\ifsecondargument
     \doifelse{#2}\v!reset
       {\doresetextendedtexts{#1}}
       {\getparameters[\????tx\v!left] [#2]
        \getparameters[\????tx\v!right][#2]
        \dodosetextendedtexts{#1}\v!text}
   \fi\fi\fi}
\def\dodosetextendedtexts#1#2%
    {\setvalue{\??tk#1#2\c!lefttext}%
       {\dodoubletexts@wolf{\??tk#1}{#2}%
          {\c!leftstyle \c!leftcolor \c!leftwidth }{\useifdefined{\????tx\v!left \v!left  }}%
          {\c!rightstyle\c!rightcolor\c!rightwidth}{\useifdefined{\????tx\v!right\v!left  }}}%
     \setvalue{\??tk#1#2\c!middletext}%
       {\dodoubletexts@wolf{\??tk#1}{#2}%
          {\c!leftstyle \c!leftcolor \c!leftwidth }{\useifdefined{\????tx\v!left \v!middle}}%
          {\c!rightstyle\c!rightcolor\c!rightwidth}{\useifdefined{\????tx\v!right\v!middle}}}%
     \setvalue{\??tk#1#2\c!righttext}%
       {\dodoubletexts@wolf{\??tk#1}{#2}%
          {\c!leftstyle \c!leftcolor \c!leftwidth }{\useifdefined{\????tx\v!left \v!right }}%
          {\c!rightstyle\c!rightcolor\c!rightwidth}{\useifdefined{\????tx\v!right\v!right }}}}
\def\doresetextendedtexts#1%
  {\def\docommand##1%
     {\letvalue{\??tk#1##1\c!lefttext  }\empty
      \letvalue{\??tk#1##1\c!middletext}\empty
      \letvalue{\??tk#1##1\c!righttext }\empty}
   \processcommalist[text,margin,edge]\docommand}
%\def\dosingletexts#1#2#3#4#5#6%
%  {\bgroup
%   \expandafter\convertargument#6\to\ascii
%   \doifsomething\ascii
%     {\doattributes{#1#2}#3#4%
%        {\placetextlinestrut{#1}% here !
%        %\doifdefinedelse{\??mk\ascii\c!coupling} % brrr
%         \doifelsemarking\ascii
%           {\dolimitatetexts{#1#2#5}{\getmarking[\ascii][\v!first]}}
%           {\ConvertConstantAfter\doifelse\v!pagenumber{#6}
%               \@@plaatspaginanummer
%              {\ConvertConstantAfter\doifelse\v!date{#6}
%                 {\currentdate}
%                 {% #6{}{}{} -> {} needed for macros that look
%                  % ahead, like \uniqueMPgraphic
%                  \opeenregel\dolimitatetexts{#1#2#5}{#6{}{}{}}}}}}}%
%  \egroup}
\def\dosingletexts@wolf#1#2#3#4#5#6%
  {\bgroup
   \edef\ascii@wolf{#6}%
   \expandafter\convertargument\ascii@wolf\to\ascii
   \doifsomething\ascii
     {\doattributes{#1#2}#3#4%
        {\placetextlinestrut{#1}% here !
         \doifelsemarking\ascii
           {\dolimitatetexts{#1#2#5}{\getmarking[\ascii][\v!first]}}
           {\doifelse\v!pagenumber{#6}
               \@@plaatspaginanummer
              {\doifelse\v!date{#6}
                 {\currentdate}
                 {\opeenregel\dolimitatetexts{#1#2#5}{#6{}{}{}}}}}}}%
  \egroup}
%\def\dodoubletexts#1#2#3#4#5#6%
%  {\doifoddpageelse
%     {\dosingletexts{#1}{#2}#3{#4}}  % #3 => provides three arguments
%     {\dosingletexts{#1}{#2}#5{#6}}} % #5 => provides three arguments
\def\dodoubletexts@wolf#1#2#3#4#5#6%
  {\doifoddpageelse
     {\dosingletexts@wolf{#1}{#2}#3{#4}}  % #3 => provides three arguments
     {\dosingletexts@wolf{#1}{#2}#5{#6}}} % #5 => provides three arguments
%D \macros{presettext}
%D
%D The next example demonstrates how we can use this
%D mechanism to provide page (event) dependent text lines.
%D
%D \starttyping
%D \presettext[chapter][footer][middle=pagenumber]
%D \setuphead[chapter][header=high,footer=chapter]
%D \setheadertexts[middle=pagenumber]
%D \setfootertexts[left=left,right=right]
%D \chapter{eerste} \dorecurse{20}{\input tufte \relax}
%D \chapter{tweede} \dorecurse{20}{\input tufte \relax}
%D \stoptyping
%\def\definetext
%  {\doseventupleempty\dodefinetext}
\def\presettext
  {\doquintupleempty\dopresettext}
%\def\dodefinetext[#1][#2][#3][#4][#5][#6][#7]%
%  {\ifseventhargument
%     \setvalue{\??tk#2#3#1}{\dosixtupleempty\dosetuptexts[#2][#3][#4][#5][#6][#7]}%
%   \else\ifsixthargument
%     \setvalue{\??tk  #2#1}{\dosixtupleempty\dosetuptexts[#2][#3][#4][#5][#6]}%
%   \else\iffifthargument
%     \setvalue{\??tk#2#3#1}{\dosixtupleempty\dosetuptexts[#2][#3][#4][#5]}%
%   \else\iffourthargument
%     \setvalue{\??tk  #2#1}{\dosixtupleempty\dosetuptexts[#2][#3][#4]}%
%   \else
%     \setvalue{\??tk  #2#1}{\dosixtupleempty\dosetuptexts[#2][#3]}%
%   \fi\fi\fi\fi}
\def\dopresettext[#1][#2][#3][#4][#5]%
  {\iffifthargument
     \setvalue{\??tk#2#3#1}{\doquadrupleempty\dosetextendedtexts[#2][#3][#4][#5]}%
   \else\iffourthargument
     \setvalue{\??tk  #2#1}{\doquadrupleempty\dosetextendedtexts[#2][#3][#4]}%
   \else
     \setvalue{\??tk  #2#1}{\doquadrupleempty\dosetextendedtexts[#2][#3]}%
   \fi\fi}
\protect \endinput
------------------------------------------------------------------------
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