92 lines
2.4 KiB
Markdown
92 lines
2.4 KiB
Markdown
# matplotlib-d
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[](LICENSE)
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[](https://travis-ci.org/koji-kojiro/matplotlib-d)
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[](https://code.dlang.org/packages/matplotlib-d)
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[](https://code.dlang.org/packages/matplotlib-d)
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2D Plotting library for D using python and matplotlib.
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## Requirements
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- Python
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- matplotlib
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`matplotlib-d` uses `python3` by default, thus if you want to use `python2`, set `$MATPLOTLIB_D_PYTHON` to `python2`.
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## Usage
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### Installation
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To use this package, put the following dependency into your project's dependencies section:
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dub.json: `"matplotlib-d": "~>0.1.4"`
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dub.sdl: `dependency "matplotlib-d" version="~>0.1.4"`
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For small applications or scripts, add following sentence to the head of your script.
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```d
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#!/usr/bin/env dub
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/+ dub.sdl:
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name "name_of_your_application"
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dependency "matplotlib-d" version="~>0.1.4"
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+/
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```
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And excute with `dub run --single`.
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For more details, please refer to [the documentation of dub](https://code.dlang.org/getting_started).
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### Syntax
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Most pyplot functions are available.
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For more details for each functions, please refer to the [documantation of pyplot](http://matplotlib.org/api/pyplot_summary.html).
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Describe Python keyword arguments as an associative array with string of keyword name as key.
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- The Python way:
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*function(arg1, arg2..., keyword1=kwarg1, keyword2=kwarg2...)*
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- The D way:
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*function(arg1, arg2..., ["keyword1": kwarg1], ["keyword2": kwarg2])*
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## Examples
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Simple example:
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```d
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import std.math;
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import std.range;
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import std.algorithm;
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import plt = matplotlibd.pyplot;
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void main() {
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auto x = iota(0, 2.05, 0.05).map!(x => x * PI);
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auto y = x.map!(sin);
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plt.plot(x, y, "r-", ["label": "$y=sin(x)$"]);
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plt.xlim(0, 2 * PI);
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plt.ylim(-1, 1);
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plt.legend();
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plt.savefig("simple.png");
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plt.clear();
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}
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```
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Color plot example:
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```d
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import std.range;
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import plt = matplotlibd.pyplot;
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void main() {
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const n = 100;
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auto x = iota(n);
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auto y = x[];
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double[n][n] z;
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foreach (i; 0..n)
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foreach (j; 0..n)
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z[i][j] = i + j;
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plt.contourf(x, y, z, 64, ["cmap": "hsv"]);
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plt.colorbar();
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plt.savefig("color.png");
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plt.clear();
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}
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```
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