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I recently had to look at the implementation of the Sparkline [1] widget in Ratatui which uses a similar Unicode technique but scales nicely for sparklines with larger vertical size.
[1] https://github.com/ratatui/ratatui/blob/20c88aaa5b9eb011a522...
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Stream
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I have a small python (hy) package which extends the idea to horizon charts https://github.com/kunalb/orphism
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As a fan of Sparklines (and Tufte in general), I have to shout out to one of my favourite places that sparklines have been used - in sudara's Audio Sparkline library for the popular JUCE Audio processing framework:
https://github.com/sudara/melatonin_audio_sparklines
The reason this is such a nerd tickle, is that sudara even went as far as to teach lldb how to render arrays' using sparklines, meaning one can get a pretty useful clue about the contents of an audio buffer within the debugger:
https://forum.juce.com/t/new-audio-sparklines-module/46606
This, to me, aligns very much with the "Tao" of sparklines - although of course I've modified my local copy to use unicode fonts, which is either heinous or fabulous, depending on how much coffee I've had before I have to hit up lldb for details about why my day is going to be good/bad... ;)
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If anyone want to see an example of graphing use the braille characters (I think) look at btop https://github.com/aristocratos/btop
Speaking of misaligned characters: an upgrade a few months back in some thing (font, terminal, or renderer) caused the characters to be shifted up or down one pixel so the bottom and top now touch between lines
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InfluxDB
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