Scala implementation of Histogrammar
See histogrammar.org for a complete introduction to Histogrammar.
This is a Scala implementation for Scala versions 2.10 and 2.11.
Installation
Histogrammar has a standard Maven POM. With Maven 3+, run
mvn install -P scala-2.10
or
mvn install -P scala-2.11
in the base directory (to compile everything) or one of the subdirectories. All subdirectories depend on core, so this must be installed first.
Status
The Scala implementation is verified against the Python implementation by running exactly the same tests on both. They agree numerically to one part in a trillion, with the same NaN/infinity handling, and exchange the same JSON.
All primitives except UntypedLabel preserve type information in the Scala REPL, so you can extract values or tab-complete without casting.
In the future, JIT-compilation will be available, similar to the ROOT/Cling interface in Python, but compiling to Java bytecode with Janino instead of native bytecode with LLVM.
| Primitive | Scala | JVM JIT |
|---|---|---|
| Count | done | |
| Sum | done | |
| Average | done | |
| Deviate | done | |
| Minimize | done | |
| Maximize | done | |
| Bag | done | |
| Bin | done | |
| SparselyBin | done | |
| CentrallyBin | done | |
| IrregularlyBin | done | |
| Categorize | done | |
| Fraction | done | |
| Stack | done | |
| Select | done | |
| Label | done | |
| UntypedLabel | done | |
| Index | done | |
| Branch | done |
