There is no specific animation function in the Racket plot package, but animations can be build by repeatedly plotting individual frames onto a canvas or image using `plot/dc`. The technique requires drawing the entire plot every frame, which will be inef...| alex-hhh.github.io
When experimenting with a new data visualization or data analysis method, it is simpler to write a prototype as a separate application, to evaluate if it is worthwhile investing the effort of adding a full feature to ActivityLog2, this post illustrates th...| alex-hhh.github.io
This is a Racket GUI Widget which can display maps based on Open Street Map tiles -- it allows embedding maps in Racket GUI applications. I originally wrote this code as part of the ActivityLog2 project and, since I wanted to use it in other projects, I d...| alex-hhh.github.io
The Racket plot package produces interactive `snip%` objects which allow zooming of the plot area. While this is a cool and sometimes useful feature, the functionality is hard coded in the `plot-snip%` class inside the package. I extended the package to a...| alex-hhh.github.io