basic issues with formulas

basic issues with formulas

[Pablo Rodriguez]

Dear list,

math is all Greek to me and I’m experiencing issues when typesetting the
most basic inline formulas.

  \starttext
  \startitemize[packed]
  \item Valor actual neto: $beneficios - costes$.
  \item Beneficio por euro: $\frac{beneficios}{costes}$.
  \item Beneficio obtenido el primer año.
  \stopitemize

  \startitemize[packed]
  \item Valor actual neto: $beneficios - costes$.
  \item Beneficio por euro: $beneficios - costes$.
  \item Beneficio obtenido el primer año.
  \stopitemize

  \startitemize[packed, columns, two]
  \item Valor actual neto: $beneficios - costes$.
  \item Beneficio por euro: $\frac{beneficios}{costes}$.
  \item Beneficio obtenido el primer año.
  \stopitemize

  \startitemize[packed, columns, two]
  \item Valor actual neto: $beneficios - costes$.
  \item Beneficio por euro: $beneficios - costes$.
  \item Beneficio obtenido el primer año.
  \stopitemize
  \stoptext

The issues I’m experiencing are:

1. Kernings around ligatures (fi) are wrong.

2. Is there a way to enable ligatures?

3. Packed works fine with fractions, but packed columns is wrong with
them. It adds too much space.

Again, formulas are totally foreign to my work with ConTeXt.

I don’t know whether they are bugs in latest (2020.01.30 14:13) or there
is a way to avoid the issues.

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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Re: basic issues with formulas

[Otared Kavian]

Hi Pablo,

You may use \text in math formulas as in:

 \startitemize[packed]
 \item Valor actual neto: $\text{beneficios} - \text{costes}$.
 \item Beneficio por euro: $\frac{\text{beneficios}}{\text{costes}}$.
 \item Beneficio obtenido el primer año.
 \stopitemize

Best regards: Otared

> On 3 Dec 2020, at 20:48, Pablo Rodriguez <oinos@gmx.es> wrote:
> 
> Dear list,
> 
> math is all Greek to me and I’m experiencing issues when typesetting the
> most basic inline formulas.
> 
>  \starttext
>  \startitemize[packed]
>  \item Valor actual neto: $beneficios - costes$.
>  \item Beneficio por euro: $\frac{beneficios}{costes}$.
>  \item Beneficio obtenido el primer año.
>  \stopitemize
> 
>  \startitemize[packed]
>  \item Valor actual neto: $beneficios - costes$.
>  \item Beneficio por euro: $beneficios - costes$.
>  \item Beneficio obtenido el primer año.
>  \stopitemize
> 
>  \startitemize[packed, columns, two]
>  \item Valor actual neto: $beneficios - costes$.
>  \item Beneficio por euro: $\frac{beneficios}{costes}$.
>  \item Beneficio obtenido el primer año.
>  \stopitemize
> 
>  \startitemize[packed, columns, two]
>  \item Valor actual neto: $beneficios - costes$.
>  \item Beneficio por euro: $beneficios - costes$.
>  \item Beneficio obtenido el primer año.
>  \stopitemize
>  \stoptext
> 
> The issues I’m experiencing are:
> 
> 1. Kernings around ligatures (fi) are wrong.
> 
> 2. Is there a way to enable ligatures?
> 
> 3. Packed works fine with fractions, but packed columns is wrong with
> them. It adds too much space.
> 
> Again, formulas are totally foreign to my work with ConTeXt.
> 
> I don’t know whether they are bugs in latest (2020.01.30 14:13) or there
> is a way to avoid the issues.
> 
> Many thanks for your help,
> 
> Pablo
> --
> http://www.ousia.tk
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________

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Re: basic issues with formulas

[Pablo Rodriguez]

On 12/3/20 8:55 PM, Otared Kavian wrote:
> Hi Pablo,
>
> You may use \text in math formulas as in:

Many thanks for your reply, Otared.

\text is what I needed to fix the issue with ligatures and spacing.

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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Re: basic issues with formulas

[Hans Åberg]

> On 3 Dec 2020, at 20:48, Pablo Rodriguez <oinos@gmx.es> wrote:
> 
> math is all Greek to me and I’m experiencing issues when typesetting the
> most basic inline formulas.
…
> The issues I’m experiencing are:
> 
> 1. Kernings around ligatures (fi) are wrong.
> 
> 2. Is there a way to enable ligatures?
> 
> 3. Packed works fine with fractions, but packed columns is wrong with
> them. It adds too much space.
> 
> Again, formulas are totally foreign to my work with ConTeXt.

When you do not use \text in math mode, it means implicit multiplication, which has special spacing. Operator names use text kerning. For example $sin x$ is implicit multiplication, and $\sin x$ the function "sin" applied to the variable x.


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Re: basic issues with formulas

[Pablo Rodriguez]

On 12/3/20 9:23 PM, Hans Åberg wrote:
>> [...]
>> Again, formulas are totally foreign to my work with ConTeXt.
>
> When you do not use \text in math mode, it means implicit
multiplication, which has special spacing. Operator names use text
kerning. For example $sin x$ is implicit multiplication, and $\sin x$
the function "sin" applied to the variable x.

Many thanks for your explanation, Hans.

Now it’s clear to me that math and text modes are different in practice.

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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Re: basic issues with formulas

[Pablo Rodriguez]

On 12/3/20 8:48 PM, Pablo Rodriguez wrote:
> [...]
> 3. Packed works fine with fractions, but packed columns is wrong with
> them. It adds too much space.

After clearing the issue with text, it seems that fractions add to much
space when in list with columns.

  \showframe\showgrid
  \starttext
  list:

  \startitemize[packed, columns, four]
  \item $\text{1} - \text{2}$
  \item item
  \item $\frac{1}{2}$
  \item item
  \stopitemize

  list:

  \startitemize[columns, four]
  \item $\text{1} - \text{2}$
  \item item
  \item $\frac{1}{2}$
  \item item
  \stopitemize
  \stoptext

I don’t know whether this is a bug.

Many thanks f or your help,

Pablo
--
http://www.ousia.tk
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Re: basic issues with formulas

[Wolfgang Schuster]

Pablo Rodriguez schrieb am 03.12.2020 um 21:52:
> On 12/3/20 8:48 PM, Pablo Rodriguez wrote:
>> [...]
>> 3. Packed works fine with fractions, but packed columns is wrong with
>> them. It adds too much space.
> After clearing the issue with text, it seems that fractions add to much
> space when in list with columns.
>
>    \showframe\showgrid
>    \starttext
>    list:
>
>    \startitemize[packed, columns, four]
>    \item $\text{1} - \text{2}$
>    \item item
>    \item $\frac{1}{2}$
>    \item item
>    \stopitemize
>
>    list:
>
>    \startitemize[columns, four]
>    \item $\text{1} - \text{2}$
>    \item item
>    \item $\frac{1}{2}$
>    \item item
>    \stopitemize
>    \stoptext
>
> I don’t know whether this is a bug.

Itemize uses the mixed columns when you enable columns with enabled grid 
snapping
as default setting. To get rid of the extra line you can either disable 
the grid setting
for itemize with

     \setupitemize[grid=no]

or you replace the mixed columns mechanism with a simpler column 
mechanism which
doesn't produce an extra line, to do this add this at the begin of your 
document

     \enableexperiments[itemize.columns]

Wolfgang

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Re: basic issues with formulas

[Pablo Rodriguez]

On 12/3/20 10:00 PM, Wolfgang Schuster wrote:
> Pablo Rodriguez schrieb am 03.12.2020 um 21:52:
>> On 12/3/20 8:48 PM, Pablo Rodriguez wrote:
>>> [...]
>>> 3. Packed works fine with fractions, but packed columns is wrong with
>>> them. It adds too much space.
>> After clearing the issue with text, it seems that fractions add to much
>> space when in list with columns.
>> [...]
>> I don’t know whether this is a bug.
>
> Itemize uses the mixed columns when you enable columns with enabled
> grid snapping as default setting. To get rid of the extra line you
> can either disable the grid setting for itemize with
>
>      \setupitemize[grid=no]

Many thanks with your reply, Wolfgang.

This solves the issue.

> or you replace the mixed columns mechanism with a simpler column
> mechanism which doesn't produce an extra line, to do this add this at
> the begin of your document
>
>      \enableexperiments[itemize.columns]

This avoids the extra line, but columns are wrong: 3 columps with option
"four" and it split items in 3 for the first column and 1 for the second
column with option "two".

Many thanks for your help,

Pablo
--
http://www.ousia.tk
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Re: basic issues with formulas

[Andres Conrado Montoya]

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Hi pablo, regaring 1) TeX assumes that each character is a variable on math
mode. You need to tell it that each "word" is, well, a "word":

\starttext
  \startitemize[packed]
  \item Valor actual neto: $\text{\em beneficios} - \text{\em costes}$. %
you can use typographical variations inside \text: \em, \bf, etc
  \item Beneficio por euro: $\frac{\text{\em beneficios}}{\text{\em
costes}}$.
  \item Beneficio obtenido el primer año.
  \stopitemize
\stoptext

2) will solve itself ather this. 3, I don't know.



-- 
Andrés Conrado Montoya
Andi Kú
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[-- Attachment #1.2: Type: text/html, Size: 1944 bytes --]

[-- Attachment #2: Type: text/plain, Size: 493 bytes --]

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Re: basic issues with formulas

[Wolfgang Schuster]

Andres Conrado Montoya schrieb am 03.12.2020 um 21:58:
> Hi pablo, regaring 1) TeX assumes that each character is a variable on 
> math mode. You need to tell it that each "word" is, well, a "word":
> 
> \starttext
>    \startitemize[packed]
>    \item Valor actual neto: $\text{\em beneficios} - \text{\em costes}$. 
> % you can use typographical variations inside \text: \em, \bf, etc
>    \item Beneficio por euro: $\frac{\text{\em beneficios}}{\text{\em 
> costes}}$.
>    \item Beneficio obtenido el primer año.
>    \stopitemize
> \stoptext

There are additional commands for italic, bold etc. text

\starttext

\startlines
$\mathtexttf{upright text}$
$\mathtextit{italic text}$
$\mathtextsl{slanted text}$
$\mathtextbf{bold text}$
$\mathtextbi{bolditalic text}$
$\mathtextbs{boldslanted text}$
\stoplines

\startlines
$\mathwordtf{upright word}$
$\mathwordit{italic word}$
$\mathwordsl{slanted word}$
$\mathwordbf{bold word}$
$\mathwordbi{bolditalic word}$
$\mathwordbs{boldslanted word}$
\stoplines

\stoptext

Wolfgang
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