https://github.com/kojix2/nuplot

Running Gnuplot with Crystal.
https://github.com/kojix2/nuplot

crystal gnuplot

Last synced: 9 months ago
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Running Gnuplot with Crystal.

• Host: GitHub
• URL: https://github.com/kojix2/nuplot
• Owner: kojix2
• License: mit
• Created: 2018-02-10T13:40:28.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2018-03-17T09:51:45.000Z (almost 8 years ago)
• Last Synced: 2025-03-27T13:51:26.670Z (9 months ago)
• Topics: crystal, gnuplot
• Language: Crystal
• Homepage:
• Size: 45.9 KB
• Stars: 6
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# nuplot

This is a minimum tool for running Gnuplot with Crystal. 

## Installation

Add this to your application's `shard.yml`:

```yaml

dependencies:

  nuplot:

    github: kojix2/nuplot

```

## Usage

```crystal

require "nuplot"

```

![sin(x)](https://raw.githubusercontent.com/kojix2/nuplot/master/img/sin.png)

```crystal

Gnuplot.plot do |s|

  s << "plot sin(x)"

end

```

![scatter plot](https://raw.githubusercontent.com/kojix2/nuplot/master/img/scatter2d.png)

```crystal

x = Array(Float64).new(100){ rand(10.0..20.0) }

y = Array(Float64).new(100){ rand(100.0..200.0) }

Gnuplot.plot do |s|

  s << "set title 'SCATTER'"

  s << "plot '-' pt 6 lt rgb 'red' t 'circle'"

  s << to_gp([x, y])

end

```

![lines plot](https://raw.githubusercontent.com/kojix2/nuplot/master/img/lines.png)

```crystal

memo = 0

x = Array(Float64).new(100,0.0)

# Optimistic random walk

100.times do |i|

  memo = memo + rand(-0.9..1.0)

  x[i] = memo

end

Gnuplot.plot do |s|

  s << "set title 'LINES'"

  s << "plot '-' with lines title 'x'"

  s << to_gp(x)

end

```

![scatter plot 3d](https://raw.githubusercontent.com/kojix2/nuplot/master/img/scatter3d.png)

```crystal

x = Array(Float64).new(1000){ rand(-10.0..10.0) }

y = Array(Float64).new(1000){ rand(-10.0..10.0) }

z = Array(Float64).new(1000){ |i| x[i]**2 + y[i]**2 }

Gnuplot.plot do |s|

  s << "set title 'SCATTER 3D'"

  s << "splot '-' pt 6 t 'z=x^2+y^2'"

  s << to_gp([x,y,z])

end

```

## Development

What I do not do

- Replacing the gnuplot idiom with a new Crystal object.

## Contributing

- bird1079s

Pull requests are always welcome.