Minimals and dvipng

Minimals and dvipng

[Jean Magnan de Bornier]

Hi all,

My TeX setup: TeXLive (systemwide) for evetything but ConTeXt, and the
minimals for ConTeXt, in my userspace.

I have some issues using dvipng with minimals.

I first compile this file with texexec:
......................
\setupoutput[dvi]
\enableregime[utf]
\starttext
\startTEXpage
$
SP=\int_0^{Q_0}(p_0-Cm(Q))dQ
$
\stopTEXpage
\stoptext
......................

In the minimals environment, dvipng says: 
......................  

This is dvipng 1.11 Copyright 2002-2008 Jan-Ake Larsson dvipng warning:
cannot find ps2pk.map, nor psfonts.map [1dvipng warning: font rm-lmr12 at
400 dpi not found, characters will be left blank dvipng warning: font
rm-lmr7 at 400 dpi not found, characters will be left blank dvipng
warning: font rm-lmr9 at 400 dpi not found, characters will be left blank
dvipng warning: unable to draw glyph 61, skipping dvipng warning: unable
to draw glyph 48, skipping dvipng warning: unable to draw glyph 48,
skipping dvipng warning: unable to draw glyph 40, skipping dvipng warning:
unable to draw glyph 48, skipping dvipng warning: unable to draw glyph 40,
skipping dvipng warning: unable to draw glyph 41, skipping dvipng warning:
unable to draw glyph 41, skipping ]

......................

And the output is awful!!

But if I dvipng in the TL environment, it works like a charm. So what
should I add to my minimals install, or do to have all the TL stuff not
forgotten when I use minimals?

tia,
-- 
Jean
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Re: Minimals and dvipng

[Arthur Reutenauer]

> But if I dvipng in the TL environment, it works like a charm. So what
> should I add to my minimals install, or do to have all the TL stuff not
> forgotten when I use minimals?

  dvipng is not part of the minimals at all, which means you're probably
using it from TL's path, where it can't find the minimals' fonts.  If
you're ready to hack a bit, just copy dvipng to the minimals' path.

	Arthur
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Re: Minimals and dvipng

[Jean Magnan de Bornier]

Le 20 janvier à 09:25:29 Arthur Reutenauer <arthur.reutenauer@normalesup.org> écrit notamment:

| > But if I dvipng in the TL environment, it works like a charm. So what
| > should I add to my minimals install, or do to have all the TL stuff not
| > forgotten when I use minimals?
>
|   dvipng is not part of the minimals at all, which means you're probably
| using it from TL's path, where it can't find the minimals' fonts.  If
| you're ready to hack a bit, just copy dvipng to the minimals' path.

Well Arthur, thanks!

But just copying or linking dvipng is not enough (same result); what kind
of hack would you suggest?

-- 
Jean
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Re: Minimals and dvipng

[Arthur Reutenauer]

> But just copying or linking dvipng is not enough (same result); what kind
> of hack would you suggest?

  Right, I didn't test it before :-)  On my machine, it works if I use
the following configuration:

  1. Copy dvipng to the minimals' bin dir.
  2. export PATH=/path/to/the/minimals/bin:$PATH and only that (no setuptex)
  3. export TEXFONTMAPS=/path/to/texlive/texmf-var/fonts/map/dvips

  Note point 2: the only setting you need for ConTeXt to DVI to work is
the PATH; I didn't try with setuptex but I strongly suspect that you
would have problems.  Or, maybe not :-)  Of course, you can experiment
around that base configuration (maybe you don't need to copy dvipng at
all, etc.).

	Arthur
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Re: Minimals and dvipng

[Arthur Reutenauer]

>   3. export TEXFONTMAPS=/path/to/texlive/texmf-var/fonts/map/dvips

  Did I write fonts/map/dvips?  It should have been fonts/map/dvips/updmap
(or, alternatively, fonts/map/dvips// with the trailing double slash).
And it seems to work without copying the dvipng binary, and with
setuptex as well.  Of course your mileage may vary, but anyway, the key
is setting TEXFONTMAPS.

	Arthur
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Re: Minimals and dvipng

[Jean Magnan de Bornier]

Le 20 janvier à 13:49:28 Arthur Reutenauer <arthur.reutenauer@normalesup.org> écrit notamment:

| >   3. export TEXFONTMAPS=/path/to/texlive/texmf-var/fonts/map/dvips
>
|   Did I write fonts/map/dvips?  It should have been fonts/map/dvips/updmap
| (or, alternatively, fonts/map/dvips// with the trailing double slash).
| And it seems to work without copying the dvipng binary, and with
| setuptex as well.  Of course your mileage may vary, but anyway, the key
| is setting TEXFONTMAPS.
>
| 	Arthur

Ho yes!!
Thanks a lot, it works. Will there be any side-effect on normal uses of context?
-- 
Jean
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Re: Minimals and dvipng

[Arthur Reutenauer]

> Thanks a lot, it works. Will there be any side-effect on normal uses of context?

  Definitely.  TEXFONTMAPS is the path to the various font mapping files
for dvips, (x)dvipdfm(x) and pdfTeX.  I would strongly advise against
setting that variable for normal use of the minimals.  What you could do
without tweaking with TEXFONTMAPS, is to put ps2pk.map in some directory
inside fonts/map in the minimals, together with the dvipng binary.  Best
in texmf-local, for this is the location for local changes.  But then,
you of course need to make sure that the necessary fonts are available
in the minimals, etc.

  Since you have TeX Live installed, your best bet is probably to use
the minimals with the special TEXFONTMAPS setting only for ConTeXt +
dvipng, and otherwise use the minimals only, or TeX Live only.

	Arthur
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Re: Minimals and dvipng

[Jean Magnan de Bornier]

Le 20 janvier à 21:16:57 Arthur Reutenauer <arthur.reutenauer@normalesup.org> écrit notamment:

| > Thanks a lot, it works. Will there be any side-effect on normal uses of context?
>
|   Definitely.  TEXFONTMAPS is the path to the various font mapping files
| for dvips, (x)dvipdfm(x) and pdfTeX.  I would strongly advise against
| setting that variable for normal use of the minimals.  What you could do
| without tweaking with TEXFONTMAPS, is to put ps2pk.map in some directory
| inside fonts/map in the minimals, together with the dvipng binary.  Best
| in texmf-local, for this is the location for local changes.  But then,
| you of course need to make sure that the necessary fonts are available
| in the minimals, etc.
>
|   Since you have TeX Live installed, your best bet is probably to use
| the minimals with the special TEXFONTMAPS setting only for ConTeXt +
| dvipng, and otherwise use the minimals only, or TeX Live only.
>

Well that doesn't look too good... I wish I could use dvipng whenever I
need to. 
A solution is of course to give up minimals and install the TeXlive
ConTeXt; do you think it is a bad move? (for use of mkiv)?
-- 
Jean
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Re: Minimals and dvipng

[Aditya Mahajan]

[-- Attachment #1: Type: TEXT/PLAIN, Size: 1384 bytes --]

On Wed, 21 Jan 2009, Jean Magnan de Bornier wrote:

> Le 20 janvier à 21:16:57 Arthur Reutenauer <arthur.reutenauer@normalesup.org> écrit notamment:
>
> | > Thanks a lot, it works. Will there be any side-effect on normal uses of context?
>>
> |   Definitely.  TEXFONTMAPS is the path to the various font mapping files
> | for dvips, (x)dvipdfm(x) and pdfTeX.  I would strongly advise against
> | setting that variable for normal use of the minimals.  What you could do
> | without tweaking with TEXFONTMAPS, is to put ps2pk.map in some directory
> | inside fonts/map in the minimals, together with the dvipng binary.  Best
> | in texmf-local, for this is the location for local changes.  But then,
> | you of course need to make sure that the necessary fonts are available
> | in the minimals, etc.
>>
> |   Since you have TeX Live installed, your best bet is probably to use
> | the minimals with the special TEXFONTMAPS setting only for ConTeXt +
> | dvipng, and otherwise use the minimals only, or TeX Live only.
>>
>
> Well that doesn't look too good... I wish I could use dvipng whenever I
> need to.

You should also be able to use

TEXFONTMAPS=/location/ dvipng

so that the variable is set only for the dvipng run. Maybe setting this as 
an alias for dvipng will also work (I don't know how unix shell aliases 
interact with variables)

Aditya

[-- Attachment #2: Type: text/plain, Size: 487 bytes --]

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Re: Minimals and dvipng

[Mojca Miklavec]

On Wed, Jan 21, 2009 at 6:10 PM, Jean Magnan de Bornier wrote:
>
> I wish I could use dvipng whenever I need to.

So you are plannig to release/improve the emacs module and document it for Maps?

I'll take a look at the end of the week to see if we can make it work
with minimals.

Mojca
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Re: Minimals and dvipng

[Jean Magnan de Bornier]

Le 21 janvier à 23:32:07 Mojca Miklavec <mojca.miklavec.lists@gmail.com> écrit notamment:

| On Wed, Jan 21, 2009 at 6:10 PM, Jean Magnan de Bornier wrote:
| >
| > I wish I could use dvipng whenever I need to.
>
| So you are plannig to release/improve the emacs module and document it for Maps?

Well, I had not used the math mode in muse for a while and then having
installed the last texlive + context minimals I found out the problem with
dvipng; no improvement, I'm afraid! 

Documentation on the contextgarden wiki is already there. Now what is
Maps again?

>
| I'll take a look at the end of the week to see if we can make it work
| with minimals.

That would be GREAT Mojca!

Thanks to you and Aditya
-- 
Jean
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Re: Minimals and dvipng

[Mojca Miklavec]

On Wed, Jan 21, 2009 at 11:32 PM, Mojca Miklavec wrote:
> On Wed, Jan 21, 2009 at 6:10 PM, Jean Magnan de Bornier wrote:
>>
>> I wish I could use dvipng whenever I need to.
>
> So you are plannig to release/improve the emacs module and document it for Maps?
>
> I'll take a look at the end of the week to see if we can make it work
> with minimals.

Hello Jean,

You need exactly (or at least) two things to make dvipng work:
- dvipng binary
- fonts/map/dvips/updmap/ps2pk.map

I can add that to minimals, just a few questions below ...
It's just that one day it might be splitted (together with dvips &
different font tools that almost nobody uses) into some additional
package that one needs to install separately (with additional
arguments).


We don't have updmap, so ps2pk needs to be either:
a) prepared semi-manually with fonts that minimals ship
b) taken from TeX Live with both fonts that minimals have and those
that are not shipped at all
How many exotic fonts do you usually need? Does ps2pk require some
special syntax? (reading
http://ftp.univie.ac.at/packages/tex/dviware/dvipng/fontmap.c and
still asking stupid questions ...)

There's only one thing I wonder about: [x]dvipdfmx uses the map file
that are specified in dvi (xdv) specials.
- How does dvips know which map files to use? / Is there some
"quasi-standard" way to secify map files in dvi?
- Would it make sense (in long term) to ask the author of dvipng to
honour the map files specified in dvi file instead of requiring ps2pk
to be unconditionally present?
- not to be taken seriously: (Wouldn't it be nice if pdftex/luatex was
able to generate PNGs out of the box? :) :) :)

(Well, I know, ConTeXt is a bit different from LaTeX with respect to
map files ...)

Mojca
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Re: Minimals and dvipng

[Jean Magnan de Bornier]

Le 29 janvier à 11:54:31 Mojca Miklavec <mojca.miklavec.lists@gmail.com> écrit notamment:

| On Wed, Jan 21, 2009 at 11:32 PM, Mojca Miklavec wrote:
| > On Wed, Jan 21, 2009 at 6:10 PM, Jean Magnan de Bornier wrote:
| >>
| >> I wish I could use dvipng whenever I need to.
| >
| > So you are plannig to release/improve the emacs module and document it for Maps?
| >
| > I'll take a look at the end of the week to see if we can make it work
| > with minimals.
>
| Hello Jean,
>
| You need exactly (or at least) two things to make dvipng work:
| - dvipng binary
| - fonts/map/dvips/updmap/ps2pk.map
>
| I can add that to minimals, just a few questions below ...
| It's just that one day it might be splitted (together with dvips &
| different font tools that almost nobody uses) into some additional
| package that one needs to install separately (with additional
| arguments).
>
>
| We don't have updmap, so ps2pk needs to be either:
| a) prepared semi-manually with fonts that minimals ship
| b) taken from TeX Live with both fonts that minimals have and those
| that are not shipped at all

Hello Mojka,
Thank you for taking from your time to look at that!

| How many exotic fonts do you usually need?

Well nothing really exotic: i just want to use context to ultimately create png
images of math formulas to be shown as images on websites... 

| Does ps2pk require some special syntax? (reading
| http://ftp.univie.ac.at/packages/tex/dviware/dvipng/fontmap.c and still
| asking stupid questions ...)
>
No idea, I'm afraid (and no more ideas about the rest  :-(  )!

>
| There's only one thing I wonder about: [x]dvipdfmx uses the map file
| that are specified in dvi (xdv) specials.
| - How does dvips know which map files to use? / Is there some
| "quasi-standard" way to secify map files in dvi?
| - Would it make sense (in long term) to ask the author of dvipng to
| honour the map files specified in dvi file instead of requiring ps2pk
| to be unconditionally present?
| - not to be taken seriously: (Wouldn't it be nice if pdftex/luatex was
| able to generate PNGs out of the box? :) :) :)
>
| (Well, I know, ConTeXt is a bit different from LaTeX with respect to
| map files ...)

Thanks,
-- 
Jean
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Re: Minimals and dvipng

[Jean Magnan de Bornier]

Hi all, 

Tomorrow I will try to modify my muse-tex2png.el file so it uses the pdf
output of context (or texexec), then "convert" to make a png file, instead
of dvipng: I use this already for graphics (metapost or pgf) and it will
probably be a better tool.

Please Mojca no hard work on dvipng until I give more news :-) !!

Cheers,
-- 
Jean
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