Scala wrapping of INDArray class of ND4j

src/main/java/scalaExec/Interpreter/GlobalValues.java

@@ -42,7 +42,7 @@ public class GlobalValues
 {
 
 
-    static public   String  scalalabBuildVersion = "3-Jan-19"; 
+    static public   String  scalalabBuildVersion = "4-Jan-19"; 
 
     static public boolean createNewInterpreterOnToggleLibraries = false; // controls whether to create a new interpreter on library switching along with a new classloader
     																	 // or to simply execute the proper import statements in order to wsitch libraries

src/main/resources/ScalaSciExamples/deeplearning/wrappingINDArray.sssci

@@ -0,0 +1,55 @@
+
+
+// wrapping with more friendly user interface the class INDArray
+// this example runs only with Deeplearning4j version of ScalaLab, i.e. ScalaLabDL4j.jar
+class ND4jMat  (x: RichDouble2DArray)  {
+ import org.nd4j.linalg.api.ndarray.INDArray
+ import org.nd4j.linalg.factory.Nd4j
+ import org.nd4j.linalg.util.ArrayUtil
+  import java.util.Arrays
+
+
+  var x1d = scalaSci.RichDouble2DArray.oneDDoubleArray(x)
+
+  var data = Nd4j.create( x1d, Array( x.Nrows, x.Ncols) )
+
+
+   def this(xp: INDArray) = this(xp.toDoubleMatrix )
+
+
+  def + ( that: INDArray) =  new ND4jMat(data.add(that))
+
+
+  def - ( that: INDArray) =  new ND4jMat(data.sub(that))
+
+
+
+  def * ( that: INDArray) =  new ND4jMat(data.mmul(that))
+
+
+  def + ( that: ND4jMat):ND4jMat = this + that.data
+
+
+  def - ( that: ND4jMat):ND4jMat =  this - that.data
+
+
+
+  def * ( that: ND4jMat):ND4jMat = this * that.data
+
+  //def - ( that: ND4jMat) = this.sub(that)
+ // def * ( that: ND4jMat) = this.mmul(that)
+
+ }
+
+
+
+ var N=4000
+
+ var x = rand(N,N)
+
+ var nx = new ND4jMat(x)
+
+
+ tic
+ var nxnx = nx * nx   // multiply fast using ND4j 
+ var tm=toc