TypedPipe to matrix

[Nikhil J Joshi]

Hi,

I have a library (XGBoost) that is optimized for matrix manipulation and hence I need to port my input (read from avro) `TypedPipe` to a matrix. I am able to map each avro record to an array of floats. But I don't know what to write as the fields in `toMatrix` arguments List

I am doing something like

private val inputData = TypedPipe.from(PackedAvroSource[SomeAvroRecord](args("inputData")))

.map(avroToFloatArray)  

.toMatrix(....

Any help would be great.

Thanks,

Nikhil