Including links with LaTeX code.

Including links with LaTeX code.

[David Menéndez Hurtado]

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I am using Bitbucket's Markdown wiki for source code documentation. It 
doesn't support inline LaTeX, so I am linking the images from codecogs. The 
code looks like this:

This formula: ![](http://latex.codecogs.com/svg.latex?|W_1W_2|) is 
important.
My image: ![](peak_detection/detection_1.png)

I want to be able to generate pdf files from here. If I try directly, it 
understands the link as actual LaTeX code:

$ pandoc -o peak.pdf peak_detection.md 
pandoc: Could not find image 
`http://latex.codecogs.com/svg.latex?|W_1W_2|', skipping...
pandoc: Error producing PDF from TeX source.
! Missing $ inserted.
<inserted text> 
                $
l.100 ...com/svg.latex?\textbar{}W_1W_2\textbar{}}

It compiles nicely to html, but if I try to transform that to pdf, the 
lines get amputated at the formulas. In my example, the PDF output is:

This formula:
My image: [the_image]

I have also tried the --self-contained flag. With v 1.11.1 installed from 
Fedora repositories, my images were included, but the LaTeX links were left 
as they were without warning, whereas in the v 1.12.0.2 from cabal, it says:

pandoc: Could not find data file http://latex.codecogs.com/svg.latex

and no output is produced.


Codecogs has also a png option instead of png, but the results are the same 
in all cases.


Is there a way I can produce PDF files of my wiki, including formulas? I 
have a few pages, so I don't mind generate them one by one, but I need the 
same .md code to work in Bitbucket and in pdf.


Thank you,

/David.

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Re: Including links with LaTeX code.

[John MacFarlane]

I've traced down the problem.  Pandoc does try to download images
when absolute URIs are given, but in this case it isn't doing it because
"http://latex.codecogs.com/svg.latex?|W_1W_2|" is not recognized as
an absolute URI.  Network.URI's function isAbsoluteURI gives False.
That seems odd to me, but perhaps it's because the | characters aren't
encoded?  I will look into it and try to fix.  It might be a bug in the
network library.

+++ David Menéndez Hurtado [Oct 16 13 05:45 ]:
> I am using Bitbucket's Markdown wiki for source code documentation. It 
> doesn't support inline LaTeX, so I am linking the images from codecogs. The 
> code looks like this:
> 
> This formula: ![](http://latex.codecogs.com/svg.latex?|W_1W_2|) is 
> important.
> My image: ![](peak_detection/detection_1.png)
> 
> I want to be able to generate pdf files from here. If I try directly, it 
> understands the link as actual LaTeX code:
> 
> $ pandoc -o peak.pdf peak_detection.md 
> pandoc: Could not find image 
> `http://latex.codecogs.com/svg.latex?|W_1W_2|', skipping...
> pandoc: Error producing PDF from TeX source.
> ! Missing $ inserted.
> <inserted text> 
>                 $
> l.100 ...com/svg.latex?\textbar{}W_1W_2\textbar{}}
> 
> It compiles nicely to html, but if I try to transform that to pdf, the 
> lines get amputated at the formulas. In my example, the PDF output is:
> 
> This formula:
> My image: [the_image]
> 
> I have also tried the --self-contained flag. With v 1.11.1 installed from 
> Fedora repositories, my images were included, but the LaTeX links were left 
> as they were without warning, whereas in the v 1.12.0.2 from cabal, it says:
> 
> pandoc: Could not find data file http://latex.codecogs.com/svg.latex
> 
> and no output is produced.
> 
> 
> Codecogs has also a png option instead of png, but the results are the same 
> in all cases.
> 
> 
> Is there a way I can produce PDF files of my wiki, including formulas? I 
> have a few pages, so I don't mind generate them one by one, but I need the 
> same .md code to work in Bitbucket and in pdf.
> 
> 
> Thank you,
> 
> /David.
> 
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Re: Including links with LaTeX code.

[John MacFarlane]

OK -- solution is to encode the | characters as %7C.

If you write
 ![](http://latex.codecogs.com/svg.latex?%7CW_1W_2%7C)

it should work

+++ John MacFarlane [Oct 16 13 09:10 ]:
> I've traced down the problem.  Pandoc does try to download images
> when absolute URIs are given, but in this case it isn't doing it because
> "http://latex.codecogs.com/svg.latex?|W_1W_2|" is not recognized as
> an absolute URI.  Network.URI's function isAbsoluteURI gives False.
> That seems odd to me, but perhaps it's because the | characters aren't
> encoded?  I will look into it and try to fix.  It might be a bug in the
> network library.
> 
> +++ David Menéndez Hurtado [Oct 16 13 05:45 ]:
> > I am using Bitbucket's Markdown wiki for source code documentation. It 
> > doesn't support inline LaTeX, so I am linking the images from codecogs. The 
> > code looks like this:
> > 
> > This formula: ![](http://latex.codecogs.com/svg.latex?|W_1W_2|) is 
> > important.
> > My image: ![](peak_detection/detection_1.png)
> > 
> > I want to be able to generate pdf files from here. If I try directly, it 
> > understands the link as actual LaTeX code:
> > 
> > $ pandoc -o peak.pdf peak_detection.md 
> > pandoc: Could not find image 
> > `http://latex.codecogs.com/svg.latex?|W_1W_2|', skipping...
> > pandoc: Error producing PDF from TeX source.
> > ! Missing $ inserted.
> > <inserted text> 
> >                 $
> > l.100 ...com/svg.latex?\textbar{}W_1W_2\textbar{}}
> > 
> > It compiles nicely to html, but if I try to transform that to pdf, the 
> > lines get amputated at the formulas. In my example, the PDF output is:
> > 
> > This formula:
> > My image: [the_image]
> > 
> > I have also tried the --self-contained flag. With v 1.11.1 installed from 
> > Fedora repositories, my images were included, but the LaTeX links were left 
> > as they were without warning, whereas in the v 1.12.0.2 from cabal, it says:
> > 
> > pandoc: Could not find data file http://latex.codecogs.com/svg.latex
> > 
> > and no output is produced.
> > 
> > 
> > Codecogs has also a png option instead of png, but the results are the same 
> > in all cases.
> > 
> > 
> > Is there a way I can produce PDF files of my wiki, including formulas? I 
> > have a few pages, so I don't mind generate them one by one, but I need the 
> > same .md code to work in Bitbucket and in pdf.
> > 
> > 
> > Thank you,
> > 
> > /David.
> > 
> > -- 
> > You received this message because you are subscribed to the Google Groups "pandoc-discuss" group.
> > To unsubscribe from this group and stop receiving emails from it, send an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> > To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> > To view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/96f9dd8e-35e9-4de8-934b-e847d616bf04%40googlegroups.com.
> > For more options, visit https://groups.google.com/groups/opt_out.

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