Making a Movie
Generating a Sequence of (PNG) Images
Inside VisTrails
Inside Excel
Creating the Animation
Animated GIF
Here is a set of steps that can be followed to construct an animated gif (movie) from a set of images that have been constructed using VisTrails.
- Use the "Explore" feature of VisTrails to sample a parameter range and thereby generate a sequences of spreadsheet images.
- After viewing the spreadsheet results, use the spreadsheet's "Export/Separately" menu option to dump the image sequence into a new (otherwise empty) file folder. By default, VisTrails will name the files: a1.png, a2.png, a3.png, etc.
- Via the Mac's terminal window, change directories into the folder that contains the image sequence. Type the following command:
convert -set delay 3 -colorspace GRAY -colors 16 -dispose 1 -loop 0 -scale 50% *.png Output.gif
- Related information:
- I initially extracted this recommended "convert" instruction from Jens Nöckel's web site.
- My Mac contains a manual on this "convert" instruction (man convert); it points out that, "The convert program is a member of the ImageMagick(1) suite of tools."
- The Mac's "convert" manual also refers to a convert website.
- Finally, simply upload the "Output.gif" file to the VisTrails wiki site, then insert it into the desired wiki page just as you would insert a single image.
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