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scalasparse-matrixscala-breeze

Broadcasting in Breeze CSCMatrix?

Is it possible to use broadcasting in Breeze CSCMatrix objects? On a DenseMatrix m, broadcasting works like the following:

sum(m(::, *)

However, the same operation on a CSCMatrix m yields this error:

scala> sum(m(0 to m.rows - 1, *))
<console>:15: error: could not find implicit value for parameter canSlice:  breeze.linalg.support.CanSlice2[breeze.linalg.CSCMatrix[Int],scala.collection.immutable.Range.Inclusive,breeze.linalg.*.type,Result]
Solution

  • Slicing and broadcasting haven't been fleshed out for CSCMatrix yet, sorry.