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I wanted to automate conversion from pdf to animated gif with animate rule provided by cmhughes in answer to plotting the sequence x_n using tikz.

I'm using arara+texworks+miktex on windows. I also have imagemagick installed and working from command line.

I've saved cmhughes code as animate.yaml in my \rules folder. I add

% arara: pdflatex
% arara: animate

to my tex file (as example, this pgfplots code) and compile it with arara. The result is a correct pdf file but when starts animate it shows a message with

Running animate ...

Parámetro no válido: 10

Parámetro no válido means non valid parameter and I don't know which program (arara, convert) shows it.

I'm using arara from TeXworks with options --log and --verbose. After compiling a tex file, arara.log contains:

05 Jun 2013 15:52:58.687 INFO  Arara - Welcome to arara!
05 Jun 2013 15:52:58.687 INFO  Arara - Processing file '117309.tex', please wait.
05 Jun 2013 15:52:58.703 INFO  DirectiveExtractor - Reading directives from 117309.tex.
05 Jun 2013 15:52:58.703 TRACE DirectiveExtractor - Directive found in line 1 with animate: {density: 200, delay: 10}.
05 Jun 2013 15:52:58.812 INFO  DirectiveParser - Parsing directives.
05 Jun 2013 15:52:58.812 INFO  TaskDeployer - Deploying tasks into commands.
05 Jun 2013 15:52:58.812 TRACE TaskDeployer - Task 'animate' found in 'D:\Archivos de programa\arara\rules'.
05 Jun 2013 15:52:59.125 INFO  CommandTrigger - Ready to run commands.
05 Jun 2013 15:52:59.125 INFO  CommandTrigger - Running 'animate'.
05 Jun 2013 15:52:59.125 TRACE CommandTrigger - Command: convert -delay 10 -loop 0 -density 200 "117309.pdf" "117309.gif"
05 Jun 2013 15:52:59.265 TRACE CommandTrigger - Output logging:
05 Jun 2013 15:52:59.265 TRACE CommandTrigger - Par metro no v lido: 10

05 Jun 2013 15:52:59.265 WARN  CommandTrigger - 'animate' returned an error status.
05 Jun 2013 15:52:59.265 INFO  Arara - Done.

(empty line is original, not my mistake editing it)

In any case, running command

convert -delay 10 -loop 0 -density 300 myfile.pdf myfile.gif

from command window works and creates a gif file. This command is what it's trying to do arara: animate.

Do you know what's wrong?

share|improve this question
Did you try to add the flags -v -l to the compilation of arara. Then you have a verbosed arara log file. –  Marco Daniel Jun 5 '13 at 11:06
@MarcoDaniel Nothing changes. I've added arara.log results. –  Ignasi Jun 5 '13 at 13:59
Please add the option -debug All to convert. Then you get an output of the log of convert –  Marco Daniel Jun 5 '13 at 14:06
@MarcoDaniel If I add -debug All to convert on command line I can see a lot of information but conversion still works. If I the option to yaml file: - <arara> convert -debug All -delay @{delay} -loop @{loop} -density @{density} "@{getBasename(file)}.pdf" "@{getBasename(file)}.gif" > test.log 2>&1. Still nothing changes. The error is the same, process stops in same place and nothing is written in test.log. –  Ignasi Jun 5 '13 at 16:26
@Ignasi: I suspect the "wrong" convert is being called (Windows has also a tool named convert, so there's a name clash). I have no Windows machine near me right now, so I cannot say for sure which PATH arara is assuming (either user or system, I suspect system). As a workaround, replace - <arara> convert in Chris' animate rule by the full path to ImageMagick's convert, say, - <arara> "C:\Program Files\ImageMagick\bin\convert.exe" (I don't know the exact path) and try running arara again. Please tell me if this works, otherwise we have to come up with another solution. :) –  Paulo Cereda Jun 5 '13 at 17:26

1 Answer 1

up vote 3 down vote accepted

I apologize for not making my rule robust enough :)

As noted in the comments, the problem with my original answer is that Windows might not get the path correct. You can fix it by using

- <arara> @{ isWindows( "cmd /c convert", "convert" ) } -delay @{delay} -loop @{loop} -density @{density} "@{ getBasename(file) }.pdf" "@{ getBasename(file) }.gif"

Here's a complete, cross-platform, version

# Make animated .gif file from .pdf
# author: Chris Hughes
# last edited by: cmh, June 6th 2013
# requires arara 3.0+
# Sample usage: 
# % arara: animate
# % arara: animate: {density: 200}
# % arara: animate: {density: 200, delay: 20}
# This rule is really just a shortcut for commands like the following
#  convert -delay 10 -loop 0 -density 300 myfile.pdf myfile.gif
# which will output myfile.gif
identifier: animate
name: animate
- <arara> @{ isWindows( "cmd /c convert", "convert" ) } -delay @{delay} -loop @{loop} -density @{density} "@{ getBasename(file) }.pdf" "@{ getBasename(file) }.gif"
- identifier: delay
  flag: <arara> @{parameters.delay}
  default: 10
- identifier: loop
  flag: <arara> @{parameters.loop}
  default: 0
- identifier: density
  flag: <arara> @{parameters.density}
  default: 300
share|improve this answer
Oh a Windows user ;-) –  Marco Daniel Jun 6 '13 at 17:29
Thank you for animate.yaml. Now it will be easier (at least for me) to submit animated gif's to TeX.SX. :-) –  Ignasi Jun 7 '13 at 10:45
@Ignasi no problem, glad it helped :) isWindows is pretty darned useful :) –  cmhughes Jun 7 '13 at 15:04

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