Re: [Orgmode] :scale option in org-format-latex-options

[Carsten Dominik]

On Mar 14, 2010, at 8:54 AM, David Maus wrote:

> Hi Dan,
>
> Dan Davison wrote:
> > When creating png images of latex fragments in org-create-formula- 
> > image,
> > the :scale option in org-format-latex-options is not currently  
> > honoured
> > (it's commented out). My dvipng documentation says
>
> >      -x num
>
> >          Set the x magnification ratio to num/1000. Overrides the
> >          magnification specified in the DVI file.  Must be between 10
> >          and 100000.  It is recommended that you use standard magstep
> >          values (1095, 1200, 1440, 1728, 2074, 2488, 2986, and so on)
> >          to help reduce the total number of PK files generated.  num
> >          may be a real number, not an integer, for increased
> >          precision.
>
> > I don't know what a magstep is, let alone a PK file, but it seems to
> > suggest something like the patch below. Is there any reason not to  
> > make
> > a change like this?
>
> I see two problems: First we should find out what "x magnification"
> and "magstep" actually is and why the manual suggests using these
> "strange" standard numbers.  And second: At least dvipng shipped with
> debian testing
>
> ,----
> | This is dvipng 1.12 Copyright 2002-2008 Jan-Ake Larsson
> | dvipng 1.12
> | kpathsea version 5.0.0
> | Compiled with Freetype 2.3.11
> | Using libft 2.3.11
> | Using t1lib 5.1.2
> `----
>
> does not have a -y option.

I remember removing the option precise because some (newer?)
versions of dvipng do not have these options.  I believe you can use a  
larger DPI to make the image larger.

- Carsten