Uniplot

Unicode plotting tool for displaying CSV data directly in your terminal.

(source: Our World in Data)

Features

• Braille canvas for plotting
• Line plots
• Axes and tick labels showing ranges
• Optional title, x-axis label, and legend
• Input data loading from a CSV file

Usage

Start from a well-formatted CSV file:

$ head data/annual_co2_emissions.csv
Year,United States,China,France,Germany,Italy,United Kingdom
1750,,,,,,9.350528e6
1751,,,,,,9.350528e6
1752,,,,,,9.354192e6
1753,,,,,,9.354192e6
1754,,,,,,9.357856e6
1755,,,,,,9.36152e6
1756,,,,,,1.0006384e7
1757,,,,,,1.0010048e7
1758,,,,,,1.0013712e7

Uniplot reads the standard input for a CSV file, and its behaviour depends on the number of columns:

• If there is only one column, it will plot its values against a simple range index.
• For two or more columns, it will use the first column for the x-axis, and plot the next columns with different colors against it.

You can use a tool like Awk or xsv to select the columns you want to plot:

awk -F, -v OFS=, '{print $1, $4, $5, $6, $7}' data/annual_co2_emissions.csv | uniplot

And you can add a title by giving an argument to uniplot:

awk -F, -v OFS=, '{print $1, $4, $5, $6, $7}' data/annual_co2_emissions.csv | uniplot "Annual CO₂ emissions (kg)"

Build

Install Gerbil Scheme.

Uniplot depends on Fancy for colors and display.

gxpkg install github.com/dlozeve/fancy
gxpkg install github.com/dlozeve/uniplot

Or manually clone Fancy and Uniplot and run ./build.ss in the root directory of each repository.

References

• UnicodePlots.jl in Julia