[Haskell-cafe] Re: ANN: Chart v0.14

Eugene Kirpichov ekirpichov at gmail.com
Wed Oct 27 07:46:47 EDT 2010

Good news!

Thanks, Tim!

I'd like to also note that now the LocalTime axis supports millisecond
precision, whereas earlier it only supported second precision.

2010/10/28 Tim Docker <twd2 at dockerz.net>:
> I'm pleased to announce v0.14 of the haskell chart library. This is a
> library for drawing 2D data plots. It's features include
>   + Use of the cairo graphics engine, supporting a variety of
>     output types: ps, pdf, png, and gtk windows.
>   + A variety of plot types, including: points, lines, error bars,
>     candlesticks, bar charts and pie charts.
>   + Strong typing. Charts are parameterized by the types of their
>     coordinates. One benefit of this is that labels etc are
>     automatically generated appropriately for the type of the
>     data. Currently axis types include: Double, Int, Log, LocalTime,
>     and Indexed.
>   + (some) support for interactivity. Charts support dynamic
>     resizing, and mapping from device coordinates back to source
>     values.
> The library is available on hackage. Additional information including
> details of the mailing list can be found here:
>    http://dockerz.net/software/chart.html
> Thanks to Malcolm Wallace, Eugene Kirpichov, and Matt Brown for their
> contributions to this release.
> Tim Docker
> ----------------------------------------------------------------------
> New features in v0.14
> ---------------------
> * Plot Type: AreaSpots4D
> Spots with varying area and colour
> * Plot Type: CandleStick charts
> A specific type of plot often used in financial markets for stock
> price series.
> * Multiline text in Annotation Plots
> with flexible control over the anchoring.
> * Picking.
> The library now contains logic required to map device coordinates back
> to input elements. This facilitates interactivity. See tests/TestPicking.hs.
> * Multiple Layers of axis labels
> This is currently used by the LocalTime axis to show an additional set
> of context labels - these show the next sensible granularity of time
> enclosing the more detailed labels and ticks.
> * Avoid overlapping axis labels
> The axis rendering code now skips labels where there would be
> overlaps. This is done dynamically as the chart is rendered.
> * Code refactor
> Plots and axes have been split into separate file hierarchies, with one file
> per type. This makes it easier to understand, and (hopefully) makes it
> clearer how to add new plot types.
> --
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Eugene Kirpichov
Senior Software Engineer,
Grid Dynamics http://www.griddynamics.com/

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