So far, Scala is cool and all, why not use a well-established library from a Java domain? JFreeChart comes to mind, it is very versatile and works well.
One of Scala's strengths is its compatibility with Java. Without raising a finger, Scala programs gain access to a wide range of libraries developed in / for Java. No need to wait for someone to re-launch the wheel in Scala for specialized solutions like these.
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