Re: [NTG-context] Missing \dddot and \ddddot
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, Hans Hagen wrote:
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, WN wrote:
Hello,
I need to use \dddot and \ot in one of my documents, does anyone
know how to
define these math symbols.
The trouble is that most fonts do not contain these accents.
amsmath.sty gets over this definition by faking these symbols. It is
easy to port these definitions to context.
amsmath.sty definition
\newcommand{\dddot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont ...}\vss
\newcommand{\ot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont}\vss
Converting to context
%%
\unprotect
% The true copy of amsmath definitions
\def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@
...}\vss}}}
\def\amsot{\limits^{\vbox to [EMAIL PROTECTED]
% I do not understand why you need to give negative height
\setbox\scratchbox{..} \ht\scratchbox0pt \dp\scratchbox-2pt
I was wondering why amstex definition does this, as the 1.4ex depth
was too big. Then I realized that it is not 1.4ex but 1.4\ex@ with
\ex@ as .2326ex. ughhthe ugly syntax of plain tex...
So here is a more reliable reproduction of amstex dddot and ot
\newdimen\amstexex
\amstexex = .2326ex
what's this funny number based on, somehow related to interlinespace?
one cannot define a measure globally this way, since an ex is font
dependent,;
\def\amstexex{\dimexpr.08\lineheight\relax}
or so may be better
\def\dotsadjustbox#1%
{\vbox to -1.4\amstexex{\kern-2\amstexex
\hbox{\the\textfont\zerocount#1}\vss}}
\def\dddot#1%
{{\mathop{#1}\limits^{\dotsadjustbox{...
\def\ot#1%
{{\mathop{#1}\limits^{\dotsadjustbox{
\starttext
$\dddot{a}_{\dddot{b}}$
$\ot{a}_{\ot{b}}$
\stoptext
Hans, can these definitions be added to the core?
Aditya
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Re: [NTG-context] Missing \dddot and \ddddot
On Fri, 15 Sep 2006, Hans Hagen wrote:
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, Hans Hagen wrote:
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, WN wrote:
Hello,
I need to use \dddot and \ot in one of my documents, does anyone
know how to
define these math symbols.
The trouble is that most fonts do not contain these accents.
amsmath.sty gets over this definition by faking these symbols. It is
easy to port these definitions to context.
amsmath.sty definition
\newcommand{\dddot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont ...}\vss
\newcommand{\ot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont}\vss
Converting to context
%%
\unprotect
% The true copy of amsmath definitions
\def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@
...}\vss}}}
\def\amsot{\limits^{\vbox to [EMAIL PROTECTED]
% I do not understand why you need to give negative height
\setbox\scratchbox{..} \ht\scratchbox0pt \dp\scratchbox-2pt
I was wondering why amstex definition does this, as the 1.4ex depth
was too big. Then I realized that it is not 1.4ex but 1.4\ex@ with
\ex@ as .2326ex. ughhthe ugly syntax of plain tex...
So here is a more reliable reproduction of amstex dddot and ot
\newdimen\amstexex
\amstexex = .2326ex
what's this funny number based on, somehow related to interlinespace?
one cannot define a measure globally this way, since an ex is font
dependent,;
\def\amstexex{\dimexpr.08\lineheight\relax}
The latex package amsgen.sty define it more carefully
\newdimen\ex@
[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]
[EMAIL PROTECTED]@{%
\begingroup
[EMAIL PROTECTED]@size\p@
\ifdim\dimen@-20\p@
\global\ex@ 1.5\p@
\else
[EMAIL PROTECTED]@ [EMAIL PROTECTED]@
[EMAIL PROTECTED]@\z@ -\fi}%
\dimen@ \ifdim\dimen@\z@ -\fi \dimen@
[EMAIL PROTECTED]@m sp % fudge factor
\vfuzz\p@
\def\do{\ifdim\dimen@\z@
\vfuzz=.97\vfuzz
\advance\dimen@ -\p@
[EMAIL PROTECTED] \fi}%
\do
[EMAIL PROTECTED]@ [EMAIL PROTECTED]
[EMAIL PROTECTED]@
\global\advance\ex@ [EMAIL PROTECTED]@
\fi
\endgroup
}
Aditya
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Re: [NTG-context] Missing \dddot and \ddddot
On Fri, 15 Sep 2006, Aditya Mahajan wrote:
On Fri, 15 Sep 2006, Hans Hagen wrote:
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, Hans Hagen wrote:
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, WN wrote:
Hello,
I need to use \dddot and \ot in one of my documents, does anyone
know how to
define these math symbols.
The trouble is that most fonts do not contain these accents.
amsmath.sty gets over this definition by faking these symbols. It is
easy to port these definitions to context.
amsmath.sty definition
\newcommand{\dddot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont ...}\vss
\newcommand{\ot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont}\vss
Converting to context
%%
\unprotect
% The true copy of amsmath definitions
\def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@
...}\vss}}}
\def\amsot{\limits^{\vbox to [EMAIL PROTECTED]
% I do not understand why you need to give negative height
\setbox\scratchbox{..} \ht\scratchbox0pt \dp\scratchbox-2pt
I was wondering why amstex definition does this, as the 1.4ex depth
was too big. Then I realized that it is not 1.4ex but 1.4\ex@ with
\ex@ as .2326ex. ughhthe ugly syntax of plain tex...
So here is a more reliable reproduction of amstex dddot and ot
\newdimen\amstexex
\amstexex = .2326ex
what's this funny number based on, somehow related to interlinespace?
one cannot define a measure globally this way, since an ex is font
dependent,;
\def\amstexex{\dimexpr.08\lineheight\relax}
The latex package amsgen.sty define it more carefully
\newdimen\ex@
[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]
[EMAIL PROTECTED]@{%
\begingroup
[EMAIL PROTECTED]@size\p@
\ifdim\dimen@-20\p@
\global\ex@ 1.5\p@
\else
[EMAIL PROTECTED]@ [EMAIL PROTECTED]@
[EMAIL PROTECTED]@\z@ -\fi}%
\dimen@ \ifdim\dimen@\z@ -\fi \dimen@
[EMAIL PROTECTED]@m sp % fudge factor
\vfuzz\p@
\def\do{\ifdim\dimen@\z@
\vfuzz=.97\vfuzz
\advance\dimen@ -\p@
[EMAIL PROTECTED] \fi}%
\do
[EMAIL PROTECTED]@ [EMAIL PROTECTED]
[EMAIL PROTECTED]@
\global\advance\ex@ [EMAIL PROTECTED]@
\fi
\endgroup
}
A bit of explaination incase someone is wondering what is going on
% [EMAIL PROTECTED]
%The [EMAIL PROTECTED] variable provides a small unit of space for use in
%math-mode constructions, that varies according to the current type
%size. For example, the \cn{pmb} command uses [EMAIL PROTECTED] units.
%Since a macro or mu unit solution for the \meta{dimen} [EMAIL PROTECTED]
won't
%work without changing a lot of current code in the \pkg{amsmath}
%package, we set [EMAIL PROTECTED] through the [EMAIL PROTECTED]@size} hook.
%The value of [EMAIL PROTECTED] is scaled nonlinearly in a range of roughly
%0.5pt to 1.5pt, by the function [EMAIL PROTECTED]@}.
%\begin{macrocode}
\newdimen\ex@
[EMAIL PROTECTED]@[EMAIL PROTECTED]@[EMAIL PROTECTED]
%\end{macrocode}
% \end{macro}
%
%[EMAIL PROTECTED]@} computes [EMAIL PROTECTED] as a nonlinear scaling from
10pt
%to current font size ([EMAIL PROTECTED]). Using .97 as the multiplier
makes 1
%|ex@| $\approx$ .9pt when the current type size is 8pt and 1 |ex@|
%$\approx$ 1.1pt when the current type size is 12pt.
%
%The formula is essentially
% \begin{displaymath}
% \newcommand{\points}{\mbox{pt}}
% \newcommand{\floor}[1]{\lfloor#1\rfloor}
% 1\points \pm (1\points - (.97)^{\floor{\vert 10 - n\vert}})
% \end{displaymath}
%where $n$ = current type size, but adjusted to differentiate
%half-point sizes as well as whole point sizes, and there is a
%cutoff for extraordinarily large values of [EMAIL PROTECTED] ($$ 20pt)
%so that the value of [EMAIL PROTECTED] never exceeds 1.5pt.
%
%\begin{macrocode}
[EMAIL PROTECTED]@{%
\begingroup
[EMAIL PROTECTED]@size\p@
\ifdim\dimen@-20\p@
%\end{macrocode}
%Never make [EMAIL PROTECTED] larger than 1.5pt.
%\begin{macrocode}
\global\ex@ 1.5\p@
\else
%\end{macrocode}
%Adjust by the reference size and multiply by 2 to allow for
%half-point sizes.
%\begin{macrocode}
[EMAIL PROTECTED]@ [EMAIL PROTECTED]@
%\end{macrocode}
%Save information about the current sign of [EMAIL PROTECTED]
%\begin{macrocode}
[EMAIL PROTECTED]@\z@ -\fi}%
%\end{macrocode}
%Get the absolute value of [EMAIL PROTECTED]
%\begin{macrocode}
\dimen@ \ifdim\dimen@\z@ -\fi \dimen@
[EMAIL PROTECTED]@m sp % fudge factor
%\end{macrocode}
%Here we use \cs{vfuzz} merely as a convenient scratch register
%\begin{macrocode}
\vfuzz\p@
%\end{macrocode}
%Multiply in a loop.
%\begin{macrocode}
\def\do{\ifdim\dimen@\z@
\vfuzz=.97\vfuzz
\advance\dimen@ -\p@
[NTG-context] Missing \dddot and \ddddot
Hello, I need to use \dddot and \ot in one of my documents, does anyone know how to define these math symbols. Kind regards Wim Neimeijer ___ ntg-context mailing list ntg-context@ntg.nl http://www.ntg.nl/mailman/listinfo/ntg-context
Re: [NTG-context] Missing \dddot and \ddddot
On Thu, 14 Sep 2006, WN wrote:
Hello,
I need to use \dddot and \ot in one of my documents, does anyone
know how to
define these math symbols.
The trouble is that most fonts do not contain these accents.
amsmath.sty gets over this definition by faking these symbols. It is
easy to port these definitions to context.
amsmath.sty definition
\newcommand{\dddot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont ...}\vss
\newcommand{\ot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont}\vss
Converting to context
%%
\unprotect
% The true copy of amsmath definitions
\def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@
...}\vss}}}
\def\amsot{\limits^{\vbox to [EMAIL PROTECTED]
% I do not understand why you need to give negative height
% This looks better.
\def\amsdddot {\limits^{\vbox{\kern-2ex\hbox{\the\textfont\z@ ...}\vss}}}
[EMAIL PROTECTED]
\def\dddot #1{{\mathop{#1}\amsdddot }}
\def\ot#1{{\mathop{#1}\amsot}}
\protect
\starttext
$\dddot{a}_{\dddot{b}}$
$\ot{a}_{\ot{b}}$
\stoptext
%%-
Aditya
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Re: [NTG-context] Missing \dddot and \ddddot
Thanks for the quick response, it works.
Wim
[EMAIL PROTECTED] wrote:
On Thu, 14 Sep 2006, WN wrote:
Hello,
I need to use \dddot and \ot in one of my documents, does anyone
know how to
define these math symbols.
The trouble is that most fonts do not contain these accents.
amsmath.sty gets over this definition by faking these symbols. It is
easy to port these definitions to context.
amsmath.sty definition
\newcommand{\dddot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont ...}\vss
\newcommand{\ot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont}\vss
Converting to context
%%
\unprotect
% The true copy of amsmath definitions
\def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@
...}\vss}}}
\def\amsot{\limits^{\vbox to [EMAIL PROTECTED]
% I do not understand why you need to give negative height
% This looks better.
\def\amsdddot {\limits^{\vbox{\kern-2ex\hbox{\the\textfont\z@ ...}\vss}}}
[EMAIL PROTECTED]
\def\dddot #1{{\mathop{#1}\amsdddot }}
\def\ot#1{{\mathop{#1}\amsot}}
\protect
\starttext
$\dddot{a}_{\dddot{b}}$
$\ot{a}_{\ot{b}}$
\stoptext
%%-
Aditya
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Re: [NTG-context] Missing \dddot and \ddddot
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, WN wrote:
Hello,
I need to use \dddot and \ot in one of my documents, does anyone
know how to
define these math symbols.
The trouble is that most fonts do not contain these accents.
amsmath.sty gets over this definition by faking these symbols. It is
easy to port these definitions to context.
amsmath.sty definition
\newcommand{\dddot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont ...}\vss
\newcommand{\ot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont}\vss
Converting to context
%%
\unprotect
% The true copy of amsmath definitions
\def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@
...}\vss}}}
\def\amsot{\limits^{\vbox to [EMAIL PROTECTED]
% I do not understand why you need to give negative height
\setbox\scratchbox{..} \ht\scratchbox0pt \dp\scratchbox-2pt
% This looks better.
\def\amsdddot {\limits^{\vbox{\kern-2ex\hbox{\the\textfont\z@ ...}\vss}}}
[EMAIL PROTECTED]
\def\dddot #1{{\mathop{#1}\amsdddot }}
\def\ot#1{{\mathop{#1}\amsot}}
\protect
\starttext
$\dddot{a}_{\dddot{b}}$
$\ot{a}_{\ot{b}}$
\stoptext
%%-
Aditya
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--
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
___
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Re: [NTG-context] Missing \dddot and \ddddot
On Thu, 14 Sep 2006, Hans Hagen wrote:
Aditya Mahajan wrote:
On Thu, 14 Sep 2006, WN wrote:
Hello,
I need to use \dddot and \ot in one of my documents, does anyone
know how to
define these math symbols.
The trouble is that most fonts do not contain these accents.
amsmath.sty gets over this definition by faking these symbols. It is
easy to port these definitions to context.
amsmath.sty definition
\newcommand{\dddot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont ...}\vss
\newcommand{\ot}[1]{%
{\mathop{#1}\limits^{\vbox [EMAIL PROTECTED]@\ex@
\hbox{\normalfont}\vss
Converting to context
%%
\unprotect
% The true copy of amsmath definitions
\def\amsdddot {\limits^{\vbox to -1.4ex{\kern-2ex\hbox{\the\textfont\z@
...}\vss}}}
\def\amsot{\limits^{\vbox to [EMAIL PROTECTED]
% I do not understand why you need to give negative height
\setbox\scratchbox{..} \ht\scratchbox0pt \dp\scratchbox-2pt
I was wondering why amstex definition does this, as the 1.4ex depth
was too big. Then I realized that it is not 1.4ex but 1.4\ex@ with
\ex@ as .2326ex. ughhthe ugly syntax of plain tex...
So here is a more reliable reproduction of amstex dddot and ot
\newdimen\amstexex
\amstexex = .2326ex
\def\dotsadjustbox#1%
{\vbox to -1.4\amstexex{\kern-2\amstexex
\hbox{\the\textfont\zerocount#1}\vss}}
\def\dddot#1%
{{\mathop{#1}\limits^{\dotsadjustbox{...
\def\ot#1%
{{\mathop{#1}\limits^{\dotsadjustbox{
\starttext
$\dddot{a}_{\dddot{b}}$
$\ot{a}_{\ot{b}}$
\stoptext
Hans, can these definitions be added to the core?
Aditya
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