Inspired by the Art of Data Visualization workshop hosted by Columbia University I decided to take another stab at preparing videos of data rather than just stationary figures.  Previous attempts at making figures natively within Matlab had gotten nowhere (vague instructions can be found here and meandering forums on the topic here).  Nevertheless, rejuvenated by the first warm days of Spring in NYC and two large coffees before 9am I set out on another attempt.  And this time it worked!

Video showing ambient noise Rayleigh waves dispersing away from a reference station. The color scale is amplitude.  As the video scrolls from time = 0.05 s you see the wave moving out across the array of seismic stations.  Thin grey lines show topography from NASA's Shuttle Radar Topography Mission.

Video showing ambient noise Rayleigh waves dispersing away from a reference station. The color scale is amplitude.  As the video scrolls from time = 0.05 s you see the wave moving out across the array of seismic stations.  Thin grey lines show topography from NASA's Shuttle Radar Topography Mission.

To create this video I took the path of least resistance (i.e. not depending on Matlab) and wrote out individual images as PNG files and then bound them together as a single gif using the linux command convert.  This command and the entire ImageMagic package is EXTREMELY easy to install and use, thus stop what you're doing right now and go get it! The actual command to create the gif cannot be simpler:

convert example_images*.png example_gif.gif

And there you go! To view your newly created gif just drag and drop it into your favorite web browser.  

To whet your appetite here are more videos showing Rayleigh waves traversing across the SEGMeNT array.
118BBAKO - GAWA - KARMKIMO

I'll get into more of the nitty gritty of what this video is actually showing in a later post but for now get out there and starting making your figures videos!