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ascii-graphs.js
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Ascii visualizations
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README.md
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ascii-graphs.js
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# Ascii Graphs js A simple ascii graphing tool in node.js (and possibly in the browser) Currently only supporting Histogram (Barcharts) and Sparkline ### Basic Usage ``` var data = [1, 2, 3, 4, 5]; var formatted = histogram_format(data); console.log(formatted.join('\n')); ``` ### API ``` var formatted_string = histogram_format(data, theme, options); var options = { chart_width /* width of a full bar */ divider /* character to mark the start and end of bar block_formatter /* callback for generating a character block */ last_formatter /* callback for the last character, can handle partial values */ max /* override max value */ min /* override min value */ } clear_and_log(lines) - clears previously printed lines and updates with new formatted lines ### Examples - node test.js - node system.js - browser test.html ```sh echo "Array(20).fill(0).map(_=>Math.random() * 1000 | 0).forEach(x => console.log(x))" | node - | node stdin echo "Array(2000).fill(0).map(_=>Math.random() * 10000 | 0).forEach(x => console.log(x))" | node - | node stdin-histogram ``` ``` ### Themes Use one of these: `standard`, `jim`,`equals`,`stars`,`pipes`,`sparks`, `bitly`. eg. ``` var formatted = histogram_format(data, 'jim'); var formatted = histogram_format(data, 'pipes'); ``` ### Customization Take a look at `test.js` ``` node test default options 0 | | 0.00% 1 |▉ | 6.67% 2 |█▋ | 13.33% 3 |██▌ | 20.00% 4 |███▎ | 26.67% 5 |████ | 33.33% thin (width = 1) 0 | | 0.00% 1 |▎ | 6.67% 2 |▌ | 13.33% 3 |▋ | 20.00% 4 |▉ | 26.67% 5 |█ | 33.33% longer (width = 14) 0 | | 0.00% 1 |██▉ | 6.67% 2 |█████▋ | 13.33% 3 |████████▌ | 20.00% 4 |███████████▎ | 26.67% 5 |██████████████ | 33.33% random data + standard theme 844 |███▉ | 24.55% 357 |█▋ | 10.38% 448 |██ | 13.03% 899 |████ | 26.13% 473 |██▏ | 13.74% 418 |█▉ | 12.17% jim theme 844 --------------------------------------------------------o 24.55% 357 -----------------------o 10.38% 448 -----------------------------o 13.03% 899 ------------------------------------------------------------o 26.13% 473 -------------------------------o 13.74% 418 ---------------------------o 12.17% equals theme 844 |============================] | 24.55% 357 |===========] | 10.38% 448 |==============] | 13.03% 899 |==============================]| 26.13% 473 |===============] | 13.74% 418 |=============] | 12.17% stars theme 844 |****************** | 24.55% 357 |******* | 10.38% 448 |********* | 13.03% 899 |******************** | 26.13% 473 |********** | 13.74% 418 |********* | 12.17% pipes theme 844 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||| | 24.55% 357 ||||||||||||||||||||||||| | 10.38% 448 ||||||||||||||||||||||||||||||| | 13.03% 899 ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| | 26.13% 473 ||||||||||||||||||||||||||||||||| | 13.74% 418 ||||||||||||||||||||||||||||| | 12.17% sparks theme 844 |█ | 24.55% 357 |▄ | 10.38% 448 |▅ | 13.03% 899 |█ | 26.13% 473 |▅ | 13.74% 418 |▅ | 12.17% bitly theme 204 |∎∎∎∎∎∎∎∎∎∎∎∎∎∎ | 9.60% 597 |∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎ | 28.10% 164 |∎∎∎∎∎∎∎∎∎∎∎ | 7.74% 82 |∎∎∎∎∎ | 3.85% 234 |∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎ | 11.01% 844 |∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎ | 39.71% loop 1330 |██████████████████████████████ | 22.96% 721 |████████████████▍ | 12.44% 827 |██████████████████▊ | 14.29% 1250 |████████████████████████████▎ | 21.59% 844 |███████████████████▏ | 14.57% 820 |██████████████████▌ | 14.15% sparkline | ▁▃▄▅▆▇█| Min: 1.00 Avg: 3.50 Max: 8.00 longer sparkline |▃▃▁▅▄ ▆█▅▆▅▇▆▄▄▆▇▅▁▇▅▃▆▃▄▃▅▃▄▄▅▅▄▄▅▃▁▄▄▅▁▅▇▆| Min: 0.30 Avg: 49.80 Max: 99.42 animate sparkline |▃▁▁▁▃▄▄▅▆▆▇▇▇█▇▇▇▇▆▆▅▄▄▃▁▁ ▁▃▃▄▅▅▆▆| Min: -1.00 Avg: 0.84 Max: 1.00 ``` ``` node system Memory usage 16428531712 |████████████████████████████▊ | 100.00% CPU Usage 0 |████████▊ | 27.44% 0 |█▍ | 4.22% 0 |███████▋ | 24.02% 0 |█▍ | 4.22% 0 |█████▍ | 16.89% 0 |▊ | 2.11% 0 |██████▏ | 19.00% 0 |▊ | 2.11% Trend lines |▅▄▄▄▄▄▄▅▄▄▄▄▄▃▃▃▃▃▃▃▃▄▄▃▄▃▃▄▄▃▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.22 Max: 1.00 |▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.02 Max: 1.00 |▄▄▃▃▄▃▄▄▄▃▃▄▄▃▃▃▃▃▃▃▃▃▃▃▄▃▁▄▃▃▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.19 Max: 1.00 |▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.02 Max: 1.00 |▃▃▄▃▃▃▃▄▃▃▃▄▃▃▃▃▁▃▁▁▃▃▃▃▃▁▃▃▃▃▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.16 Max: 1.00 |▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.02 Max: 1.00 |▄▃▃▃▃▃▃▃▃▃▃▃▃▃▁▁▁▁▃▁▃▁▃▁▃▁▁▃▃▁▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.13 Max: 1.00 |▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁| Min: 0.00 Avg: 0.02 Max: 1.00 ``` #### Other projects that makes ascii graphs - https://github.com/mkaz/termgraph - https://github.com/Evizero/UnicodePlots.jl - https://github.com/kroitor/asciichart - https://github.com/bitly/data_hacks
