> John K wrote:
>>
>>
>> I am trying to auto-generate a diagram from a Python script in my Lyx
>> document using the "External Material" function. I have created a Python
>> script called "myscript.py" which generates a diagram and saves it to
>> "myscript.pdf". I am trying to make Lyx run my script to generate the
>> diagram when I export my document to PDF.
>>
>> I added the following to the Lyx external_templates file:
>>
>> Template Python
>> GuiName "Python: $$AbsOrRelPathParent$$Basename"
>> HelpText
>> Python diagram.
>> HelpTextEnd
>> InputFormat "*"
>> FileFilter "*.py"
>> AutomaticProduction true
>> Preview Graphics
>> Format PDFLaTeX
>> Product "\\includegraphics{$$AbsPath$$Basename.pdf}"
>> Requirement "graphicx"
>> UpdateCommand "python $$AbsPath$$Basename.py"
>> UpdateFormat pdf
>> UpdateResult "$$AbsPath$$Basename.pdf"
>> Requirement "graphicx"
>> ReferencedFile pdflatex "$$AbsPath$$Basename.pdf"
>> FormatEnd
>> TemplateEnd
>>
>> However, when I insert the Python script in Lyx, it draws a box that says
>> "Error converting to loadable format".
> This isn't critical, it merely means you won't get a preview within LyX
> because of a failure to convert to something displayable. (png, I believe.)
>
> Of course, this may also be a symptom of what's wrong with the main
> conversion.
>
>> If I try exporting to PDF using pdflatex, I get the following error:
>>
>> "Missing $ inserted. Missing { inserted. I've inserted a begin-math/end-math
>> symbol since I think you left one out. Proceed, with fingers crossed."
>>
>> If I export to Latex using pdflatex, it seems to export correctly, and my
>> text file contains something like this:
>>
>> begin{document}
>> \includegraphics{C:/Documents and Settings/MyUsername/Desktop/myscript.pdf}
>> \end{document}
>>
>> However, it doesn't run my update command, i.e. doesn't run the Python
>> script. (I've even tried changing my update command to things like "echo
>> test> output.txt" but I can't seem to get any commands to run at all.)
>>
> That is the problem, and I guess it explains why everything else goes
> wrong too.
>
> First thing to check: is python in the path? I.e. can you give the
> command "python filename.py" on the command line - will that work?
>
> If python isn't in the path, then LyX won't find it.
Yes, Python is on the path. I tried putting the full path to Python in the
UpdateCommand as well but that didn't work either. I don't think it's a path
issue because even a command like "echo test> output.txt" does not work.
> If this succeed, will the latex export then work, as long as the
> manually converted file is present?
If I first run the Python script manually and then try exporting the Lyx
document to PDF (pdflatex), I still get this error:
"Missing $ inserted. Missing { inserted. I've inserted a
begin-math/end-math symbol since I think you left one out. Proceed,
with fingers crossed."
However, if I export to LaTeX (pdflatex), and then open this LaTeX file in
TeXnicCenter, I can export to PDF with no problems and the Python-generated
figure shows up correctly.
>> Any ideas what I am doing wrong? I've tried on Lyx 1.6.3 and 1.6.5-1 on
>> Windows XP.
>
> Another wild guess: You have a path with spaces in it, e.g. "Documents
> and Settings". Some versions of LyX can't deal with that. Some can, but
> you have to take care when a path is passed to external utilities (such
> as python) Otherwise, you risk that:
>
> python "C:\documents and settings\folder\file.py"
> becomes
> python "C:\documents" "and" "settings\folder\file.py"
> and the latter just won't work.
>
> To check if you have space problems, copy the document and all files
> to some space-free path such as C:\test\
> See if that changes anything.
I tried putting everything in to the root directory C:\ but had the same
problem.
J
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