Latex formula editor ?

Stef_Mientki1 · December 14, 2010, 12:31am

hello,

is there a formula editor availabale for wxPython,
that converts Latex formula to png files.
(so they can be embedded in html)

thanks,
Stef Mientki

Tim_Roberts · December 14, 2010, 1:40am

Stef Mientki wrote:

hello,

is there a formula editor availabale for wxPython,
that converts Latex formula to png files.
(so they can be embedded in html)

I would be gob-smacked if you could find anything pre-built for this.
It's not a simple task. If you know TeX and LaTeX are installed, you
can certainly write your own scripts to do the conversion, but the
TeX/LaTex installation on my hard disk is about 650MB.

OpenOffice has an equation writer that might be usable in other
contexts. That's worth checking.

···

--
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

Mike_Driscoll0 · December 14, 2010, 3:22pm

You can use Python to script OpenOffice, so that might be doable.

···

On Dec 13, 7:40 pm, Tim Roberts <t...@probo.com> wrote:

Stef Mientki wrote:
> hello,

> is there a formula editor availabale for wxPython,
> that converts Latex formula to png files.
> (so they can be embedded in html)

I would be gob-smacked if you could find anything pre-built for this.
It's not a simple task. If you know TeX and LaTeX are installed, you
can certainly write your own scripts to do the conversion, but the
TeX/LaTex installation on my hard disk is about 650MB.

OpenOffice has an equation writer that might be usable in other
contexts. That's worth checking.

--
Tim Roberts, t...@probo.com
Providenza & Boekelheide, Inc.

-------------------
Mike Driscoll

Blog: http://blog.pythonlibrary.org

Daniel_Hyams · December 14, 2010, 4:43pm

If you can live with a subset of Latex, check out matplotlib. It’s a plotting package, but you can have it render straight to screen or png.

Tim_Roberts · December 14, 2010, 5:46pm

dhyams wrote:

If you can live with a subset of Latex, check out matplotlib. It's a
plotting package, but you can have it render straight to screen or
png. --

Oooh, that's a great hint -- I wish I had remembered that first. Here's
a link to a sample:

http://matplotlib.sourceforge.net/users/usetex.html#usetex-tutorial

···

--
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

Daniel_Hyams · December 14, 2010, 9:20pm

Actually, I don’t know if it will help the original poster; he said that he wanted an editor, and certainly matplotlib cannot help with that. I should have read more closely

Stef_Mientki1 · December 14, 2010, 9:35pm

thank you all for your comment,

a quick and dirty summary

- Latex itself is much to heavy

- Openoffice component could be a good candidate, but I know nothing

of OO, so getting out some small component seems a lot of hassle

- MatPlotLib could work, but requires a working Latex ( so too

heavy)

- Mimetex.exe seems to be a very good candidate, small and fast. I'm

not sure this will work on other than Windows

With mimetex and 30 lines of code, I made a first version of a

real-time formula editor dialog.

cheers,

Stef

![moz-screenshot-16.png|400x310](upload://m9WhiUHkg7XFEQIEWBhTgihtpY7.png)

···

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Josh_English · December 15, 2010, 3:41am

This is SWEET. It is, however, unfair of you not to share.

Did you find mimetex.exe as a download, or did you have to compile it?

Josh

···

On Tue, Dec 14, 2010 at 1:35 PM, Stef Mientki stef.mientki@gmail.com wrote:

thank you all for your comment,
a quick and dirty summary

- Latex itself is much to heavy

- Openoffice component could be a good candidate, but I know nothing
of OO, so getting out some small component seems a lot of hassle
- MatPlotLib could work, but requires a working Latex ( so too
heavy)
- Mimetex.exe seems to be a very good candidate, small and fast. I'm
not sure this will work on other than Windows
With mimetex and 30 lines of code, I made a first version of a
real-time formula editor dialog.

–
Josh English
Joshua.R.English@gmail.com
http://joshenglish.livejournal.com

Chris_Barker1 · December 15, 2010, 5:59am

a quick and dirty summary
- Latex itself is much to heavy

yup -- I saw some folks working on a project to make a TeX designed for embedding a couple years ago -- it might be worth googling for.

- MatPlotLib could work, but requires a working Latex ( so too heavy)

Ah, I think you missed a feature. MPL can optionally use a full TeX distribution as the engine, but it also has a built-in TeX implementation with a limited feature set for equations (i.e. no paragraph layout, etc). Depending on your needs, it may be OK -- and it's pure Python.

http://matplotlib.sourceforge.net/users/mathtext.html

- Mimetex.exe seems to be a very good candidate, small and fast. I'm not
sure this will work on other than Windows

Why not -- it looks like it's ANSI C, GPL;s and there are binaries for a bunch of OSs. It would be kind of cool to wrap it as a python extension, rather than the CGI interface.

-Chris

···

On 12/14/10 1:35 PM, Stef Mientki wrote:

--
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
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Chris_Barker1 · December 15, 2010, 7:30am

OK -- I couldn't help myself, here is a quick and dirty TeX editor, written using Matplotlib.

Enjoy!

-Chris

MPLmath.py (2.74 KB)

···

On 12/14/10 9:59 PM, Christopher Barker wrote:

- MatPlotLib could work, but requires a working Latex ( so too heavy)

Ah, I think you missed a feature. MPL can optionally use a full TeX
distribution as the engine, but it also has a built-in TeX
implementation with a limited feature set for equations (i.e. no
paragraph layout, etc). Depending on your needs, it may be OK -- and
it's pure Python.

--
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception

Chris.Barker@noaa.gov

Stef_Mientki1 · December 15, 2010, 11:26am

first hit at google:

cheers,

Stef

···

http://www.biostatisticien.eu/mimetex.html

Josh
      On Tue, Dec 14, 2010 at 1:35 PM, Stef
Mientki stef.mientki@gmail.com
wrote:

          thank you all for

your comment,

          a quick and dirty summary

          - Latex itself is much to heavy

          - Openoffice component could be a good candidate, but I

know nothing of OO, so getting out some small component
seems a lot of hassle

          - MatPlotLib could work, but requires a working Latex ( so

too heavy)

          - Mimetex.exe seems to be a very good candidate, small and

fast. I’m not sure this will work on other than Windows

          With mimetex and 30 lines of code, I made a first version

of a real-time formula editor dialog.

    --

    Josh English

    Joshua.R.English@gmail.com

    [http://joshenglish.livejournal.com](http://joshenglish.livejournal.com)

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Stef_Mientki1 · December 15, 2010, 11:30am

- MatPlotLib could work, but requires a working Latex ( so too heavy)

Ah, I think you missed a feature. MPL can optionally use a full TeX
distribution as the engine, but it also has a built-in TeX
implementation with a limited feature set for equations (i.e. no
paragraph layout, etc). Depending on your needs, it may be OK -- and
it's pure Python.

OK -- I couldn't help myself, here is a quick and dirty TeX editor, written using Matplotlib.

Great Cristopher,
works smoother than the mimetex version (and pure Python)
Indeed I missed that MPL contained a subset of Latex.
So I think I'm going for your solution,

One other thing, does anyone know a good set with math icons.
The best I could find is
http://us.metamath.org/symbols/symbols.html#downloads

thanks,
Stef Mientki

···

On 15-12-2010 08:30, Christopher Barker wrote:

On 12/14/10 9:59 PM, Christopher Barker wrote:

Enjoy!

-Chris

Gadget_Steve · December 15, 2010, 12:24pm

From: Stef Mientki

Sent: Wednesday, December 15, 2010 11:30 AM

Cc: wxpython-users@googlegroups.com

Subject: Re: [wxPython-users] Re: Latex formula editor ?

MatPlotLib could work, but requires a working Latex ( so too heavy)

Ah, I think you missed a feature. MPL can optionally use a full TeX

distribution as the engine, but it also has a built-in TeX

implementation with a limited feature set for equations (i.e. no

paragraph layout, etc). Depending on your needs, it may be OK – and

it’s pure Python.

OK – I couldn’t help myself, here is a quick and dirty TeX editor, written using Matplotlib.

Great Cristopher,

works smoother than the mimetex version (and pure Python)

Indeed I missed that MPL contained a subset of Latex.

So I think I’m going for your solution,

One other thing, does anyone know a good set with math icons.

The best I could find is

http://us.metamath.org/symbols/symbols.html#downloads

If you are using the MPL solution why not generate them on the fly or as a part of the build process – then you will be able to a) Generate the size(s) you need and b) be sure that they are all supported by MDL.

Just my 2p worth.

Gadget/Steve

···

-----Original Message-----
On 15-12-2010 08:30, Christopher Barker wrote:

On 12/14/10 9:59 PM, Christopher Barker wrote:

thanks,

Stef Mientki

Enjoy!

-Chris

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Stef_Mientki1 · December 15, 2010, 12:52pm

ï¿½

          One other thing, does anyone know a good set with math

icons.

The best I could find is

http://us.metamath.org/symbols/symbols.html#downloads

        If you are using the MPL solution why not
generate them on the fly or as a part of the build process ï¿½
then you will be able to a) Generate the size(s) you need
and b) be sure that they are all supported by MDL.

WelI I want to make a number of groups with different sets of math

symbols,

that will act as a toolbar to insert the corresponding latex info.

So it will cost a lot of work to generate and include them all,

and probably I'll miss a few.

cheers,

Stef

···

ï¿½

Just my 2p worth.

ï¿½

Gadget/Steve

Stef_Mientki1 · December 15, 2010, 6:29pm

Sorry, I applauded too early.
The MPL version, has a number of problems:
- it misses a number of commands, like \small , \tiny
- the image size is fixed (to the original window size ?) with a lot of white space around the formula
(therefor the image size is also much larger than necessary)

cheers,
Stef

···

On 15-12-2010 12:30, Stef Mientki wrote:

On 15-12-2010 08:30, Christopher Barker wrote:

On 12/14/10 9:59 PM, Christopher Barker wrote:

- MatPlotLib could work, but requires a working Latex ( so too heavy)

Ah, I think you missed a feature. MPL can optionally use a full TeX
distribution as the engine, but it also has a built-in TeX
implementation with a limited feature set for equations (i.e. no
paragraph layout, etc). Depending on your needs, it may be OK -- and
it's pure Python.

OK -- I couldn't help myself, here is a quick and dirty TeX editor, written using Matplotlib.

Great Cristopher,
works smoother than the mimetex version (and pure Python)
Indeed I missed that MPL contained a subset of Latex.
So I think I'm going for your solution,

Chris_Barker1 · December 15, 2010, 6:32pm

OK -- I couldn't help myself, here is a quick and dirty TeX editor, written using Matplotlib.

Great Christopher,
works smoother than the mimetex version (and pure Python)
Indeed I missed that MPL contained a subset of Latex.
So I think I'm going for your solution,

I'm glad it's helpful.

You might want to take a look at:

matplotlib.mathtext.MathtextBackendBitmap()
A backend to generate standalone mathtext images. No additional
matplotlib backend is required.

That may let you eliminate the MPL figure stuff (though it's not too much coding overhead)

One thing I didn't figure out last night was how to tell how large a given chunk of rendered text is, so that you can do things like center it on the Figure. Some poking into the docs and code may help figure that out, or a question to the MPL list.

One other thing, does anyone know a good set with math icons.
The best I could find is

Perhaps you could generate them with MathtextBackendBitmap().

-Chris

···

On 12/15/10 3:30 AM, Stef Mientki wrote:

--
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception

Chris.Barker@noaa.gov

Chris_Barker1 · December 15, 2010, 6:35pm

The MPL version, has a number of problems:
- it misses a number of commands, like \small , \tiny

well, it's certainly incomplete -- I don't know how hard it would be to add things like that. Those particular commands could be pretty straightforward.

If you want EVERYTHING, a full LaTeX distribution is your only option. Though maybe mimeTeX has significantly more than MPL.

- the image size is fixed (to the original window size ?) with a lot of white space around the formula
(therefor the image size is also much larger than necessary)

See my previous note -- I suspect you can solve that one.

-Chris

···

On 12/15/10 10:29 AM, Stef Mientki wrote:

--
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception

Chris.Barker@noaa.gov

Jean-Michel_Fauth1 · December 16, 2010, 10:33am

You can use instead OpenType math fonts. I have just
tested the "Cambria Math" font on wxPython 2.9.1 on
Windows 7, all the random code points in the "Mathematical
Operators Unicode code block" I randomly selected are
rendered in a StaticText, a TextCtrl or in a STC.

I have other math fonts I'm using in XeTeX. I did
not test them, they are not installed at the system
level.

jmf

···

On Dec 15, 12:30 pm, Stef Mientki <stef.mien...@gmail.com> wrote:

One other thing, does anyone know a good set with math icons.