tdigest-Chart-0: README.md

# tdigest-Chart

A [`Chart`](http://hackage.haskell.org/package/Chart) plotting of [`tdigest`](http://hackage.haskell.org/package/tdigest)

## Examples

These are outputs of the test-suite

```sh
inkscape --export-png=example1.png --export-dpi=80 --export-background-opacity=0 --without-gui example1.svg
inkscape --export-png=example2.png --export-dpi=80 --export-background-opacity=0 --without-gui example2.svg
```

### Standard normal distribution

```haskell
Chart.layout_title Chart..= "Normal distribution"
Chart.plot $ do
    p <- Chart.tdigestPlot "tdigest" td
    return $ Chart.tdigestToPlot $ p
        & Chart.plot_tdigest_normalize .~ True
        & Chart.plot_tdigest_deviations .~ Just 3
```

![Example 1](https://raw.githubusercontent.com/futurice/haskell-tdigest/master/tdigest-Chart/example1.png)

### Chi-squared distribution, k = 5

```haskell
Chart.layout_title Chart..= "Chi-squared distribution, k = 5"
Chart.plot $ do
    p <- Chart.tdigestPlot "tdigest" td
    return $ Chart.tdigestToPlot $ p
        & Chart.plot_tdigest_normalize .~ True
        & Chart.plot_tdigest_quantiles .~ [0.5, 0.9, 0.999]
```

![Example 2](https://raw.githubusercontent.com/futurice/haskell-tdigest/master/tdigest-Chart/example2.png)