[NTG-context] mathmatrix vs substack

2017-09-10 Thread Henri 
Dear devs,

Thank you very much for fixing this one
https://mailman.ntg.nl/pipermail/ntg-context/2017/089790.html
Unfortunately it seems like you broke substack and mathmatrix on the way.  MWE 
below fails
with version 2017.09.08 17:24

Cheers, Henri

---

\starttext

\placeformula
\startformula
  \sum_{\startsubstack
\NC k \NR
\NC \omega_n \NR
  \stopsubstack}
\stopformula

\placeformula
\startformula
  \startmathmatrix[left=\left|,right=\right|]
\NC 0 \NC 1 \NR
\NC 1 \NC 0 \NR
  \stopmathmatrix
  = -1 .
\stopformula

\stoptext
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Re: [NTG-context] automatically splitting big images (calculation problem)

2017-09-10 Thread Henning Hraban Ramm 
Am 2017-09-10 um 11:09 schrieb Herbert Voss :

> Am 10.09.2017 um 09:13 schrieb Henning Hraban Ramm:
>> My current code actually looks like
>> % split in #1 page size parts
>> \def\clipfigure{\dodoubleempty\doClipFigure}
>> \def\doClipFigure[#1][#2]{
>> \ifsecondargument
>>   \dorecurse{#1}{%
>>   \tooltip{\clip[
>> height=\textheight,
>> voffset=\dimexpr((\recurselevel - 1)\textheight),]{%
> 
> voffset=\numexpr(\recurselevel -1)\textheight]{%

Aha, numexpr. Danke!

Am 2017-09-10 um 10:09 schrieb Herbert Voss :

> Am 10.09.2017 um 09:13 schrieb Henning Hraban Ramm:
> 
>> \def\ausschnitt{\dodoubleempty\doAusschnitt}
>> \def\doAusschnitt#1#2{\clip[height=\textheight,voffset=#1]{\externalfigure[#2][width=\textwidth]}\par}
>> This also doesn’t work; there I’m trying to set the y coordinate for the 
>> start like
>> \ausschnitt[15cm][verylongimage]
> 
> 
>> BTW example picture:
>> http://www.balderdashcomic.com/comic/ibonus
>> i.e. http://www.balderdashcomic.com/comics/1416175460-bonus1.png
> 
> \def\ausschnitt{\dodoubleempty\doAusschnitt}
> \def\doAusschnitt[#1][#2]{%
>   \clip[height=\textheight,
> voffset=#1]{\externalfigure[#2][height=\textheight]}\par}

So I just forgot the brackets. Me stupid. Thanks!
It still doesn’t do what I want, must try further.

Greetlings, Hraban
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http://wiki.contextgarden.net
GPG Key ID 1C9B22FD

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Re: [NTG-context] \definemathfence commands

2017-09-10 Thread Hans Hagen 

On 9/10/2017 12:09 PM, Otared Kavian wrote:

Hi everyone,

With the command \definemathfence it is possible to define for instance the 
following command

\definemathfence[duality][angle][command=yes,factor=auto]

so that $\duality{T,\phi}$ results in $\langle T,\phi \rangle$ and the \langle 
and \rangle are appropriately scaled when necessary.
How can one create a command called \bracparenth in order to get a left bracket 
on the left and a right parenthesis on the right, that is

$\bracparenth{a,b} = [a,b)$

and so that when necessary it scales automatically.

Below is the example for \duality.

Thanks in advance: OK

%%% begin mathfence-example.tex
\definemathfence[duality][angle][command=yes,factor=auto]
\definemathfence[parenth][parenthesis][command=yes,factor=auto]

\starttext

The action of $T$ on a smooth function $\phi$ is denoted by
\startformula
\duality{T,\phi}
\stopformula
while the scalar product of two functions $f$ and $g$ is denoted 
$\parenth{f|g}$.

\stoptext
%%% end mathfence-example.tex

you can set left and right as : left="27E6, right="27E7

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
-
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Re: [NTG-context] Obtaining an old standalone

2017-09-10 Thread Roger Mason 
Hi Aditya,

Aditya Mahajan  writes:

>
> Note that this should be luatools --generate (two hyphens, which got
> changed to an endash in the previous email).
>

Unfortunately 'luatools --generate' produces the same error.

I have worked round the problem that sparked my original post, so, with
thanks to all who offered help, I think we should leave this mystery for
posterity.

Best wishes,
Roger
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[NTG-context] \definemathfence commands

2017-09-10 Thread Otared Kavian 
Hi everyone,

With the command \definemathfence it is possible to define for instance the 
following command

\definemathfence[duality][angle][command=yes,factor=auto]

so that $\duality{T,\phi}$ results in $\langle T,\phi \rangle$ and the \langle 
and \rangle are appropriately scaled when necessary.
How can one create a command called \bracparenth in order to get a left bracket 
on the left and a right parenthesis on the right, that is

$\bracparenth{a,b} = [a,b)$

and so that when necessary it scales automatically.

Below is the example for \duality.

Thanks in advance: OK

%%% begin mathfence-example.tex
\definemathfence[duality][angle][command=yes,factor=auto]
\definemathfence[parenth][parenthesis][command=yes,factor=auto]

\starttext

The action of $T$ on a smooth function $\phi$ is denoted by 
\startformula
\duality{T,\phi}
\stopformula
while the scalar product of two functions $f$ and $g$ is denoted 
$\parenth{f|g}$.

\stoptext
%%% end mathfence-example.tex
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Re: [NTG-context] automatically splitting big images (calculation problem)

2017-09-10 Thread Herbert Voss 

Am 10.09.2017 um 09:13 schrieb Henning Hraban Ramm:

My current code actually looks like

% split in #1 page size parts
\def\clipfigure{\dodoubleempty\doClipFigure}
\def\doClipFigure[#1][#2]{
\ifsecondargument
   \dorecurse{#1}{%
   \tooltip{\clip[
 height=\textheight,
 voffset=\dimexpr((\recurselevel - 1)\textheight),]{%


voffset=\numexpr(\recurselevel -1)\textheight]{%

Herbert



 \externalfigure[#2]}}{#2 (\recurselevel/#1)}\par}
\else
   \normalfigure[#1]
\fi
}

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Re: [NTG-context] automatically splitting big images (calculation problem)

2017-09-10 Thread Herbert Voss 

Am 10.09.2017 um 09:13 schrieb Henning Hraban Ramm:


\def\ausschnitt{\dodoubleempty\doAusschnitt}
\def\doAusschnitt#1#2{\clip[height=\textheight,voffset=#1]{\externalfigure[#2][width=\textwidth]}\par}

This also doesn’t work; there I’m trying to set the y coordinate for the start 
like
\ausschnitt[15cm][verylongimage]




BTW example picture:
http://www.balderdashcomic.com/comic/ibonus
i.e. http://www.balderdashcomic.com/comics/1416175460-bonus1.png


\def\ausschnitt{\dodoubleempty\doAusschnitt}
\def\doAusschnitt[#1][#2]{%
\clip[height=\textheight,
  voffset=#1]{\externalfigure[#2][height=\textheight]}\par}

\starttext
\ausschnitt[15cm][/tmp/test.png]

\stoptext


worked

Herbert
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Re: [NTG-context] automatically splitting big images (calculation problem)

2017-09-10 Thread Henning Hraban Ramm 
Am 2017-09-09 um 22:06 schrieb Aditya Mahajan :

> On Sat, 9 Sep 2017, Henning Hraban Ramm wrote:
> 
>> Ahoi,
>> I got some long images that I’d like to split over several pages.
>> 
>> \def\clipfigure{\dodoubleempty\doClipFigure}
>> \def\doClipFigure[#1][#2]{
>> \dorecurse{#1}{%
>>  \clip[
>>height=\textheight,
>>voffset=\dimexpr((\recurselevel -1) * \textheight)
>>   ]{\externalfigure[#2][width=\textwidth]}\par
>> }
>> }
>> 
>> \clipfigure[3][verylongimage]
>> 
>> But "\dimexpr((\recurselevel -1) * \textheight)" for the vertical offset is 
>> wrong.
>> How can I do this calculation?
> 
> You are missing a comma at the end of the voffset line

Thank you, but that’s not the core problem.
I get "Illegal unit of measure (pt inserted)".


My current code actually looks like

% split in #1 page size parts
\def\clipfigure{\dodoubleempty\doClipFigure}
\def\doClipFigure[#1][#2]{
\ifsecondargument
  \dorecurse{#1}{%
  \tooltip{\clip[
height=\textheight,
voffset=\dimexpr((\recurselevel - 1)\textheight),]{%
\externalfigure[#2]}}{#2 (\recurselevel/#1)}\par}
\else
  \normalfigure[#1]
\fi
}


Another approach:

\def\ausschnitt{\dodoubleempty\doAusschnitt}
\def\doAusschnitt#1#2{\clip[height=\textheight,voffset=#1]{\externalfigure[#2][width=\textwidth]}\par}

This also doesn’t work; there I’m trying to set the y coordinate for the start 
like
\ausschnitt[15cm][verylongimage]

Here I get "Missing number, treated as zero".


I guess I need to employ the right combination of \the, expansion etc., but I 
don’t know how. This stuff is still over my head.


> but why not use
> \clip[nx= .., ny=.., x=, y=...] instead.
> http://wiki.contextgarden.net/Using_Graphics#Image_Clipping

Because I don’t want to split the picture in even slices, but cut in places 
where it makes sense. The page height is a simplification, until I get the 
calculations working.


BTW example picture:
http://www.balderdashcomic.com/comic/ibonus
i.e. http://www.balderdashcomic.com/comics/1416175460-bonus1.png


Greetlings, Hraban
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http://wiki.contextgarden.net
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