ahmadawais/chartli

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![npx chartli](https://raw.githubusercontent.com/ahmadawais/chartli/main/.github/chartli.jpg) # chartli CLI for rendering charts in terminals from numeric text data. `chartli` turns plain numbers into terminal charts. ascii, spark, bars, columns, heatmap, unicode, braille, svg. ## Install Run instantly: ```sh npx chartli --help ``` Or install globally: ```sh npm i -g chartli ``` ## Agent skill install Install the repository skill for agents: ```sh npx skills add ahmadawais/chartli ``` Quick start: ```sh npx chartli npx chartli --help ``` ## Usage ```sh npx chartli [file] [options] ``` ```text Usage: chartli [options] [file] Render terminal charts from numeric data Arguments: file Input file (reads from stdin if not provided) Options: -v, --version Output the version number -t, --type <type> Chart type: svg, ascii, unicode, braille, spark, bars, columns, heatmap (default: "ascii") -w, --width <number> Chart width -h, --height <number> Chart height -m, --mode <mode> SVG mode: circles or lines (default: "circles") --x-axis-label <label> Title to render for the x-axis --y-axis-label <label> Title to render for the y-axis --x-labels <labels> Comma-separated labels for x-axis ticks or row labels --series-labels <labels> Comma-separated labels for plotted series or categories --data-labels Show raw values near plotted data when supported --first-column-x Treat the first numeric column as x labels instead of a plotted series --help Display help for command ``` ## Labels and metadata - Use `--x-axis-label` and `--y-axis-label` to add axis titles. - Use `--x-labels` for explicit tick labels. - Use `--series-labels` to replace generic labels like `S1` and `C1`. - Use `--data-labels` to print raw values on or near the plotted data where the renderer supports it. - Use `--first-column-x` when the first numeric column is a domain like `day`, `month`, or `year`. With `--first-column-x`, chartli will: - use the first numeric column as x-axis labels - use the first header cell as the x-axis title when a header row exists - use the remaining header cells as series labels - use the second header cell as the y-axis title for common two-column data Example: ```sh pnpm chartli examples/assets/core-single-series.txt -t ascii -w 24 -h 8 --first-column-x --data-labels ``` ```sh pnpm chartli examples/assets/core-multi-series.txt -t columns -h 8 --first-column-x --series-labels sales,costs,profit --x-axis-label Metrics --y-axis-label Value --data-labels ``` ## Labeled chart examples ### ASCII line with inferred axis labels and data labels ```sh pnpm chartli examples/assets/weekly-signups.txt -t ascii -w 28 -h 8 --first-column-x --data-labels ``` ```text signups 91 │ ● 87 │ 91 ● │ 73 │ ● 68 66.5 │ 58 ● │ ● 49 │42 ● 42 │● └──────────────────────────── 1 2 3 4 5 6 7 day ``` ### Columns with explicit axis titles and inferred series names ```sh pnpm chartli examples/assets/weekly-metrics.txt -t columns -h 8 --first-column-x --x-axis-label Metrics --y-axis-label Count --data-labels ``` ```text Count 176 29 10 █ █ █ █ █ ▓ ▒ █ ▓ ▒ ──────────────────── visits trials paid Metrics ``` ### SVG with axes, x labels, and point labels ```sh pnpm chartli examples/assets/weekly-signups.txt -t svg -m lines -w 320 -h 120 --first-column-x --data-labels | sed -n '/^<?xml/,$p' > examples/assets/output/weekly-signups-chart.svg ``` This writes `examples/assets/output/weekly-signups-chart.svg`. ## Types - `ascii` - `spark` - `bars` - `columns` - `heatmap` - `unicode` - `braille` - `svg` ## Example data files - `examples/assets/core-single-series.txt` - `examples/assets/core-multi-series.txt` - `examples/assets/image-data.txt` - `examples/assets/image-single-series.txt` - `examples/assets/image-columns-variant.txt` - `examples/assets/weekly-signups.txt` - `examples/assets/weekly-metrics.txt` ## Image chart set (text diagrams) ### ASCII Line ```sh pnpm chartli examples/assets/image-data.txt -t ascii -w 24 -h 8 ``` ```text day=● sales=○ costs=◆ profit=◇ 1.00 │ ○ │ │ ◇ ◇ │ ◆ ● 0.50 │ ● ◆ │ ◇ ◆ ● │ ○ ◆ 0.00 │◇ ◆ ◇ ◇ └──────────────────────── ``` ### Sparklines ```sh pnpm chartli examples/assets/image-data.txt -t spark ``` ```text day ▁▂▃▄▅▆ sales ▁▄▂▇▅█ costs ▁▂▄▃▆▅ profit ▁▄▂▇▂▇ ``` ### Horizontal Bars ```sh pnpm chartli examples/assets/image-data.txt -t bars -w 28 ``` ```text day |███████████████████ | 0.67 sales |▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓| 1.00 costs |▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ | 0.53 profit |░░░░░░░░░░░░░░░░░░░░░░░ | 0.83 ``` ### Columns ```sh pnpm chartli examples/assets/image-data.txt -t columns -h 8 ``` ```text ▓ ▓ ░ ▓ ░ █ ▓ ░ █ ▓ ▒ ░ █ ▓ ▒ ░ █ ▓ ▒ ░ █ ▓ ▒ ░ ─────────────────────────── day sales costs profit ``` ### Columns (Variant) ```sh pnpm chartli examples/assets/image-columns-variant.txt -t columns -h 8 ``` ```text ▓ ░ █ ▓ ░ █ ▓ ░ █ ▓ ▒ ░ █ ▓ ▒ ░ █ ▓ ▒ ░ ─────────────────────────── day sales costs profit ``` ### Heatmap ```sh pnpm chartli examples/assets/image-data.txt -t heatmap ``` ```text day sales costs profit R01 R02 ░ ▒ ░ ▒ R03 ░ ░ ▒ ░ R04 ▒ ▓ ░ ▓ R05 ▒ ▒ ▓ ░ R06 ▓ █ ▒ ▓ ``` ### Unicode Bars ```sh pnpm chartli examples/assets/image-data.txt -t unicode ``` ```text day sales costs profit █ ▃ █ ▅ ▅ ▃ █ █ ▃ █ █ ▂█ █▆█ █▂ █ █ ▂██ ▂ ███ ▂ ██ ▃ █ █ ▁███ █ ███ █▁██ █ █ █ ▁████ █▅███ ▁████ █▁█▁█ █████ █████ █████ █████ ``` ### Braille ```sh pnpm chartli examples/assets/image-data.txt -t braille -w 16 -h 6 ``` ```text profit ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠀⠀⠀⠀⠀⠈ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⡀⠀⠀⠀⠀⠀⠁⠀⠀⠀⠀⠀⠁⠀⠀⠀ ``` ### SVG Chart ```sh pnpm chartli examples/assets/image-data.txt -t svg -m lines -w 320 -h 120 | sed -n '/^<?xml/,$p' > examples/assets/output/image-chart.svg ``` ```text <?xml version='1.0'?> <svg xmlns='http://www.w3.org/2000/svg' width='650' height='120' version='1.1'> <polyline ... /> <polyline ... /> <polyline ... /> <polyline ... /> </svg> ``` ![svg](examples/assets/output/image-chart.svg) # Examples All examples are data-file driven from `examples/assets/`. ## Data files - `examples/assets/core-single-series.txt` - `examples/assets/core-multi-series.txt` - `examples/assets/image-data.txt` - `examples/assets/image-single-series.txt` - `examples/assets/image-columns-variant.txt` - `examples/assets/weekly-signups.txt` - `examples/assets/weekly-metrics.txt` - `examples/assets/output/` ## Core commands - `pnpm chartli examples/assets/core-single-series.txt -t ascii -w 24 -h 8` - `pnpm chartli examples/assets/core-multi-series.txt -t spark` - `pnpm chartli examples/assets/core-multi-series.txt -t bars -w 28` - `pnpm chartli examples/assets/core-multi-series.txt -t columns -h 8` - `pnpm chartli examples/assets/core-multi-series.txt -t heatmap` - `pnpm chartli examples/assets/core-multi-series.txt -t unicode` - `pnpm chartli examples/assets/core-single-series.txt -t braille -w 16 -h 6` - `pnpm chartli examples/assets/core-multi-series.txt -t svg -m lines -w 320 -h 120 | sed -n '/^<?xml/,$p' > examples/assets/output/core-chart.svg` ## Image commands - `pnpm chartli examples/assets/image-data.txt -t ascii -w 24 -h 8` - `pnpm chartli examples/assets/image-data.txt -t spark` - `pnpm chartli examples/assets/image-data.txt -t bars -w 28` - `pnpm chartli examples/assets/image-data.txt -t columns -h 8` - `pnpm chartli examples/assets/image-columns-variant.txt -t columns -h 8` - `pnpm chartli examples/assets/image-data.txt -t heatmap` - `pnpm chartli examples/assets/image-data.txt -t unicode` - `pnpm chartli examples/assets/image-data.txt -t braille -w 16 -h 6` - `pnpm chartli examples/assets/image-data.txt -t svg -m lines -w 320 -h 120 | sed -n '/^<?xml/,$p' > examples/assets/output/image-chart.svg` ## Labeled commands - `pnpm chartli examples/assets/weekly-signups.txt -t ascii -w 28 -h 8 --first-column-x --data-labels` - `pnpm chartli examples/assets/weekly-metrics.txt -t columns -h 8 --first-column-x --x-axis-label Metrics --y-axis-label Count --data-labels` - `pnpm chartli examples/assets/weekly-signups.txt -t svg -m lines -w 320 -h 120 --first-column-x --data-labels | sed -n '/^<?xml/,$p' > examples/assets/output/weekly-signups-chart.svg` ## Run grouped examples - `pnpm run example:kitchen-sink` - `pnpm run example:image-set:kitchen-sink` - `pnpm run example:labeled:kitchen-sink` - `pnpm run example:all-kitchen-sink` ## Run all examples Image-set chart run: ```sh pnpm run example:image-set:kitchen-sink ``` Core + image run: ```sh pnpm run example:all-kitchen-sink ``` ## License Apache-2.0 by [Ahmad Awais](https://x.com/MrAhmadAwais) built with [Command Code](https://commandcode.ai).

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chartli

Softwareentwickler

Install and use chartli to render terminal charts from numeric text files or stdin.

Quellsprache: Englisch

2026-03-10

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