animation package cannot find ImageMagick with convert = "convert"
animation, imagemagick, r
Solution
I had a similar issue with the {rgl} `movie3d()` function. In that case you can explicitly pass a convert string to be executed, and so can 'tell' R where to find the right `convert.exe`:
`imconvertstring<-"\"c:\\Program Files\\ImageMagick-6.9.0-Q16\\convert.exe\" -delay 1x%d %s*.png %s.%s"`
`movie3d(spin3d(),duration=10,convert=imconvertstring)`
You can do the same with the {animation} package using `ani.options()` to specify the exact location to `convert.exe` needed. See the help entry for `im.convert()` in the {animation} package.
Problem
I have run animations in the past up to 2 weeks ago on Windows 7, R 3.0.1. Today I loaded R 3.0.2 and needed to download the animations package to run make an animation. After doing so when I try to run the animation (here is a script) I get the following error: ``` > saveGIF(FUN2(), interval = 0.1, outdir = "images/animate") I cannot find ImageMagick with convert = "convert" NULL Warning messages: 1: running command 'convert --version' had status 4 2: In im.convert(img.files, output = movie.name, convert = convert, : ImageMagick not installed yet! ``` I have ImageMagick installed and on the path as demonstrated in the video I made of the problem: http://www.youtube.com/watch?v=gvpawqLyCZY&feature=youtu.be I can run `convert --version` in the Windows command line and get the following: ``` C:\Users\trinker>convert --version Version: ImageMagick 6.8.6-8 2013-08-04 Q16 http://www.imagemagick.org Copyright: Copyright (C) 1999-2013 ImageMagick Studio LLC Features: DPC OpenMP Delegates: bzlib djvu fftw fontconfig freetype jng jp2 jpeg lcms lzma openexr pa ngo png ps tiff webp x xml zlib ``` Yet running `system("convert --version")` in R yields: ``` Invalid drive specification. Warning message: running command 'convert --version' had status 4 ``` What am I doing wrong or might I alter to make the animation package (and R) see ImageMagick? Here is additional information for the problem (in the R command line I get): ``` > system("convert -version") Invalid drive specification. Warning message: running command 'convert -version' had status 4 > shell("convert --version") Version: ImageMagick 6.8.7-9 Q16 x64 2013-11-28 http://www.imagemagick.org Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC Features: DPC Modules OpenMP Delegates: bzlib freetype jbig jng jp2 jpeg lcms lqr pangocairo png ps tiff webp xml zlib ```