There’s been a recent resurgence in animated GIFs. Maybe it’s because they’re easier to share on GitHub, Imgur and Twitter. Videos usually need a player and don’t work everywhere. It’s like we’re back in the ’90s again.
Animated GIFs don’t have as good compression as video codecs so tend to be much larger. Yet they can be acceptable for non-natural video. For example screencasts with lots of solid colour. For natural video of real scenes you need to be careful.
For example this is an animated GIF of my Blinky Tube Status. It’s composed of JPEGs but they’re cropped and there are only two frames. There is still quite a bit of noise and it looks grainy.
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This is an animation of screenshots from my mobile tube status at /tube. It shows the progression of a strike and the order in which the lines closed.
ImageMagick is a great piece of command line software for manipulating images. You can combine it with FFMPEG to turn videos into GIFs. There is a good guide on that but I started with screenshots. In newer versions of Android press lock and volume down together to capture a screenshot. On iOS press lock and home together. Retrieve the PNG images from the phone over USB.
The following command uses ImageMagick to create an animated GIF from a set of PNG images. You can specify the time between frames and if it repeats.
Awesome 'waiting' Animated Gifs
Cropping an animated GIF is a bit more complex. If you use a basic crop it will become corrupted. The following command works well. You will need to adjust the crop pixels. This removes the 80px top status bar and the bottom button bar.
You may want to shrink your GIF if the file size is too big. This command makes the image half the size. It preserves the animation which other software may not do.I already covered how to make animated heatmaps in R, but in this tutorial you learn more about customizing the animation itself. Notice that in the animated GIF above, there is a pause in the middle to indicate a changing point and a pause at the end to show the most recent difference.
If you used the animation package in R, you could string together the images to make an animation, but you wouldn’t be able to create those pauses in between.
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So instead, I created the images in R and then used ImageMagick command-line to string the images together — with the pause in between. For animated GIFs, the animation package uses ImageMagick. So going direct isn’t that big of a jump, and it gets you more flexibility.
You will get unlimited access to step-by-step visualization courses and tutorials for insight and presentation — all while supporting an independent site. Files and data are included so that you can more easily apply what you learn in your own work.
Members also receive a weekly newsletter, The Process. Keep up-to-date on visualization tools, the rules, and the guidelines and how they all work together in practice.
Geometric Gif Animations
Nathan Yau is a statistician who works primarily with visualization. He earned his PhD in statistics from UCLA, is the author of two best-selling books —
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How to Make a Polar Density Plot in R With cyclical data, a circular format might be useful. Combine that with a smooth density to reduce noise, and you got yourself a plot.
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So instead, I created the images in R and then used ImageMagick command-line to string the images together — with the pause in between. For animated GIFs, the animation package uses ImageMagick. So going direct isn’t that big of a jump, and it gets you more flexibility.
You will get unlimited access to step-by-step visualization courses and tutorials for insight and presentation — all while supporting an independent site. Files and data are included so that you can more easily apply what you learn in your own work.
Members also receive a weekly newsletter, The Process. Keep up-to-date on visualization tools, the rules, and the guidelines and how they all work together in practice.
Geometric Gif Animations
Nathan Yau is a statistician who works primarily with visualization. He earned his PhD in statistics from UCLA, is the author of two best-selling books —
R Cheat Sheet and Guide for Graphical Parameters You can customize graphics in R with par(), but the docs are mostly text and just organized alphabetically. Here is a more visual reference, categorized by what you can change. Plus, a one-page printout.
How to Make a Polar Density Plot in R With cyclical data, a circular format might be useful. Combine that with a smooth density to reduce noise, and you got yourself a plot.
Imagemagick: Two Fast Methods To Make A Gif From Images
Downloading Your Email Metadata Email provides a window into who we interact with and what we do. This tutorial describes how to get that data in the format you want.
Mapping With Shapefiles in R – Getting Started Geographic data is often available as a shapefile, and there’s plenty of heavy software to get that data in a map. R is an open source option, and as a bonus, much of the work can be done in a few lines of code.
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