![]() ![]() library ( viridis ) # nice color palette library ( ggplot2 ) # plotting library ( ggmap ) # ggplot functionality for maps library ( dplyr ) # use for fixing up data library ( readr ) # reading in data/csv library ( RColorBrewer ) # for color palettes library ( purrr ) # for mapping over a function library ( magick ) # this is call to animate/read pngs Backgroundįor this example, I’m using Google Earth Engine LANDSAT derived data on a subset of meadows in the Sierra Nevada. On the R side, I’m using quite a few R packages here, so I’ve tried to add comments about what each one is. ![]() With that installed you can either call directly from your console/system or from R. ![]() Let’s get started! What You’ll Needįor both methods, you’ll need to install ImageMagick. Whe I figure out a solution, I’ll update this post. pngs before but can’t remember exactly how I did it. I know I’ve made compact gifs with these same sets of. These animations below were 15-16MB in size. gif seems to end up as a fairly large file size (for a. The only downside I’m finding (at least building them using these ggmap base. I’ll show two different methods, one using the purrr package, and the other using system calls to the really nice ImageMagick program, which is open source and cross-platform compatible. These are great for presentations, web display, etc, and really pretty easy to build in a ggplot framework. Building on that, and some work I’ve been doing for an upcoming conference presentation, I spent some time figuring out how to take some of those really nice maps, plotted through time, and turn them into animated gifs. Get your copy here.Last post I discussed and demonstrated how you can make a pretty nice map using R. This is an excerpt from the Linux Photography book. To overrride the default settings, specify the required parameters, for example: Next time you want to transform a set of photos into an animated GIF, switch to the directory with the photos, and run the gif command. To automate the process of generating an animated GIF, add the following function to the ~/.bashrc file:Ĭonvert -delay "$delay" -loop 0 *"$ext" "$output" The delay parameter specifies the delay between frames in milliseconds, while the loop parameter determines how many times the animation runs (the 0 value will run the loop infinitely). Generating an animated GIF then is a matter of running the following command: Since there is little point in turning full-resolution photos into an animated GIF, resize the source images: This renames the photos using their date and time data to ensure the correct image sequence. ![]() In the terminal, switch to the directory containing the photos you want to assemble into an animated GIF, and run the following command: If you happen to use openSUSE, run the sudo zypper in ImageMagick jhead command. To install these tools on Debian and Ubuntu, run the sudo install imagemagick jhead command. Generating animated GIFs can be done using ImageMagick and jhead. They can also come in rather handy when you want to whip up a quick-and-dirty slideshow that can be viewed on any platform or create a timelapse animation from a sequence of images with a minimum of effort. Animated GIFs are not only good for sharing funny cat videos. ![]()
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