Re: create a Row Matrix
This works for me import org.apache.spark.mllib.linalg._ import org.apache.spark.mllib.linalg.distributed.RowMatrix val v1=Vectors.dense(Array(1d,2d)) val v2=Vectors.dense(Array(3d,4d)) val rows=sc.parallelize(List(v1,v2)) val mat=new RowMatrix(rows) val svd: SingularValueDecomposition[RowMatrix, Matrix] = mat.computeSVD(2, computeU = true) On Wed, Oct 22, 2014 at 1:55 AM, viola viola.wiersc...@siemens.com wrote: Thanks for the quick response. However, I still only get error messages. I am able to load a .txt file with entries in it and use it in sparks, but I am not able to create a simple matrix, for instance a 2x2 row matrix [1 2 3 4] I tried variations such as val RowMatrix = Matrix(2,2,array(1,3,2,4)) but it doesn't work.. -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/create-a-Row-Matrix-tp16913p16993.html Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
Re: create a Row Matrix
Please check out the example code: https://github.com/apache/spark/blob/master/examples/src/main/scala/org/apache/spark/examples/mllib/TallSkinnySVD.scala -Xiangrui On Tue, Oct 21, 2014 at 5:34 AM, viola viola.wiersc...@siemens.com wrote: Hi, I am VERY new to spark and mllib and ran into a couple of problems while trying to reproduce some examples. I am aware that this is a very simple question but could somebody please give me an example - how to create a RowMatrix in scala with the following entries: [1 2 3 4]? I would like to apply an SVD on it. Thank you very much! -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/create-a-Row-Matrix-tp16913.html Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
Re: create a Row Matrix
Thanks for the quick response. However, I still only get error messages. I am able to load a .txt file with entries in it and use it in sparks, but I am not able to create a simple matrix, for instance a 2x2 row matrix [1 2 3 4] I tried variations such as val RowMatrix = Matrix(2,2,array(1,3,2,4)) but it doesn't work.. -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/create-a-Row-Matrix-tp16913p16993.html Sent from the Apache Spark User List mailing list archive at Nabble.com. - To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
