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Data Viz

Create data visualizations from the command line.

Rating: 3.9 (443 reviews)
Downloads: 15,393 downloads
Version: 1.0.0

Overview

Create data visualizations from the command line.

Complete Documentation

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Data Visualization

Create terminal-based charts and visualizations from CSV, JSON, or piped data.

Quick Visualizations with YouPlot

YouPlot (uplot) creates Unicode charts in the terminal.

Bar Chart

bash

echo -e "Apple,30\nBanana,45\nCherry,20\nDate,35" | uplot bar -d, -t "Fruit Sales"

Line Chart

bash

seq 1 20 | awk '{print $1, sin($1/3)*10+10}' | uplot line -t "Sine Wave"

Histogram

bash

awk 'BEGIN{for(i=0;i<1000;i++)print rand()}' | uplot hist -t "Random Distribution" -n 20

Scatter Plot

bash

awk 'BEGIN{for(i=0;i<100;i++)print rand()*100, rand()*100}' | uplot scatter -t "Random Points"

From CSV Files

bash

# Bar chart from CSV
cat sales.csv | uplot bar -d, -H -t "Monthly Sales"

# Line chart with headers
cat timeseries.csv | uplot line -d, -H -t "Stock Price"

From JSON (with jq)

bash

# Extract data from JSON and plot
curl -s "https://api.example.com/data" | jq -r '.items[] | "\(.name),\(.value)"' | uplot bar -d,

Termgraph (Python Alternative)

Simple horizontal bar charts:

bash

echo -e "2020 50\n2021 75\n2022 90\n2023 120" | termgraph

With colors:

bash

echo -e "Sales 150\nCosts 80\nProfit 70" | termgraph --color green

Gnuplot (Advanced)

For publication-quality charts:

bash

# Quick line plot
gnuplot -e "set terminal dumb; plot sin(x)"

# From data file
gnuplot -e "set terminal dumb; plot 'data.txt' with lines"

Sparklines

Inline mini-charts:

bash

# Using spark (if installed)
echo "1 5 22 13 5" | spark
# Output: ▁▂█▅▂

# Pure bash sparkline
data="1 5 22 13 5"; min=$(echo $data | tr ' ' '\n' | sort -n | head -1); max=$(echo $data | tr ' ' '\n' | sort -n | tail -1); for n in $data; do printf "\u258$((7-7*($n-$min)/($max-$min)))"; done; echo

ASCII Tables

Format data as tables:

bash

# Using column
echo -e "Name,Score,Grade\nAlice,95,A\nBob,82,B\nCarol,78,C" | column -t -s,

# Using csvlook (csvkit)
cat data.csv | csvlook

Real-World Examples

Stock Price Chart

bash

# Fetch and plot stock data (using Alpha Vantage free API)
curl -s "https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=AAPL&apikey=demo" | \
  jq -r '.["Time Series (Daily)"] | to_entries | .[:20] | reverse | .[] | "\(.key) \(.value["4. close"])"' | \
  uplot line -t "AAPL Stock Price"

System Metrics

bash

# CPU usage over time
for i in {1..20}; do
  top -bn1 | grep "Cpu(s)" | awk '{print 100-$8}'
  sleep 1
done | uplot line -t "CPU Usage %"

API Response Times

bash

# Measure and plot response times
for i in {1..10}; do
  curl -s -o /dev/null -w "%{time_total}\n" https://example.com
done | uplot line -t "Response Time (s)"

Tips

Use -d, for comma-delimited data, -d'\t' for tabs
Use -H when your data has headers
Pipe through head or tail to limit data points
Combine with jq for JSON data extraction
Use watch for live updating charts: watch -n1 'command | uplot bar'

Installation

Terminal bash


openclaw install data-viz

Copied!

💻Code Examples

curl -s "https://api.example.com/data" | jq -r '.items[] | "\(.name),\(.value)"' | uplot bar -d,

curl--s-httpsapiexamplecomdata--jq--r-items--namevalue--uplot-bar--d.txt

## Termgraph (Python Alternative)

Simple horizontal bar charts:

echo -e "Sales 150\nCosts 80\nProfit 70" | termgraph --color green

echo--e-sales-150ncosts-80nprofit-70--termgraph---color-green.txt

## Gnuplot (Advanced)

For publication-quality charts:

gnuplot -e "set terminal dumb; plot 'data.txt' with lines"

gnuplot--e-set-terminal-dumb-plot-datatxt-with-lines.txt

## Sparklines

Inline mini-charts:

data="1 5 22 13 5"; min=$(echo $data | tr ' ' '\n' | sort -n | head -1); max=$(echo $data | tr ' ' '\n' | sort -n | tail -1); for n in $data; do printf "\u258$((7-7*($n-$min)/($max-$min)))"; done; echo

data1-5-22-13-5-minecho-data--tr---n--sort--n--head--1-maxecho-data--tr---n--sort--n--tail--1-for-n-in-data-do-printf-u2587-7n-minmax-min-done-echo.txt

## ASCII Tables

Format data as tables:

cat data.csv | csvlook

cat-datacsv--csvlook.txt

## Real-World Examples

### Stock Price Chart

example.sh

# Bar chart from CSV
cat sales.csv | uplot bar -d, -H -t "Monthly Sales"

# Line chart with headers
cat timeseries.csv | uplot line -d, -H -t "Stock Price"

example.sh

# Quick line plot
gnuplot -e "set terminal dumb; plot sin(x)"

# From data file
gnuplot -e "set terminal dumb; plot 'data.txt' with lines"

example.sh

# Using spark (if installed)
echo "1 5 22 13 5" | spark
# Output: ▁▂█▅▂

# Pure bash sparkline
data="1 5 22 13 5"; min=$(echo $data | tr ' ' '\n' | sort -n | head -1); max=$(echo $data | tr ' ' '\n' | sort -n | tail -1); for n in $data; do printf "\u258$((7-7*($n-$min)/($max-$min)))"; done; echo

example.sh

# Using column
echo -e "Name,Score,Grade\nAlice,95,A\nBob,82,B\nCarol,78,C" | column -t -s,

# Using csvlook (csvkit)
cat data.csv | csvlook

example.sh

# Fetch and plot stock data (using Alpha Vantage free API)
curl -s "https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=AAPL&apikey=demo" | \
  jq -r '.["Time Series (Daily)"] | to_entries | .[:20] | reverse | .[] | "\(.key) \(.value["4. close"])"' | \
  uplot line -t "AAPL Stock Price"