逐行读取数据集，并将每个空格分隔的行转换为在Scala中分隔的逗号

我有一个长度为200的数据集，每行数据的长度也是200。此数据集是空间分隔的。下面是示例数据集（第一行）

我试着用下面的方法把它转换成逗号分隔的数据。这是我的密码

val bufferedSource1 = Source.fromFile(Path1 + name)
val lines1 : Iterator[String] = bufferedSource1.getLines()

val lines2 = lines1.toArray
println( lines2(0).toList )

最后一行代码的结果是

List(-, 0, ., 1, 1, 0, 0, 2, 0, 8, 2, 6, 9, 7, 2, 9, 0, 9, 7,  , 0, ., 1, 2, 4, 8, 4, 6, 0, 4, 6, 3, 1, 0, 5, 5, 8, 9,  , -, 0, ., 0, 1, 5, 5, 9, 1, 3, 8, 5, 8, 8, 2, 5, 5, 2, 8, 6,  , -, 0, ., 0, 1, 6, 2, 5, 8, 3, 9, 4, 2, 8, 2, 9, 2, 6, 0, 3,  , -, 0, ., 0, 5, 3, 2,.........

这是返回给我一个字符，但我希望完整的行将是空格分隔的。如何解决此问题

下面是用于转换的剩余代码

 val data1 : Array[Array[Double]]  = lines2.flatMap{xz : String =>
  Seq (xz.replaceAll(" ", ",").split(",").map(_.toDouble) )
}.toArray

---

基本上是读取数据集时的问题。只有正确读取数据，您的代码才能工作。

 val data1 : Array[Array[Double]]  = lines2.flatMap{xz : String =>
  Seq (xz.replaceAll(" ", ",").split(",").map(_.toDouble) )
}.toArray

 import spark.implicits._

  val ds = List("-0.1100208269729097 0.1248460463105589 -0.01559138588255286 -0.01625839428292603 -0.05323888667281371 0.06722185430549973 -0.0490877148079949 -0.05039368886946847 0.0897270838973875 0.00754589058726465 -0.06693447805463611 -0.1193740974362337 -0.02214573804045866 0.02930806967704801 -0.009567144727872222 -0.02288991169653539 0.04256313697292451 -0.08190168271952417 0.008274133732539695 -0.02299227162395361 0.0111923018567119 -0.009872522389769637 0.06866110814693088 0.04622954799009332 0.05498202029091768 -0.06672541846259043 -0.05130079655965012 0.1107659505844031 0.07912810279475517 0.02246390669165305 -0.06997067603392053 -0.02069109953229961 -0.05191987832821615 -0.01971016519416264 ","-0.1100208269729097 0.1248460463105589 -0.01559138588255286 -0.01625839428292603 -0.05323888667281371 0.06722185430549973 -0.0490877148079949 -0.05039368886946847 0.0897270838973875 0.00754589058726465 -0.06693447805463611 -0.1193740974362337 -0.02214573804045866 0.02930806967704801 -0.009567144727872222 -0.02288991169653539 0.04256313697292451 -0.08190168271952417 0.008274133732539695 -0.02299227162395361 0.0111923018567119 -0.009872522389769637 0.06866110814693088 0.04622954799009332 0.05498202029091768 -0.06672541846259043 -0.05130079655965012 0.1107659505844031 0.07912810279475517 0.02246390669165305 -0.06997067603392053 -0.02069109953229961 -0.05191987832821615 -0.01971016519416264 ").toDS()

  ds.map(i=> i.split(" ").mkString(",")).show(false)



-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|-0.1100208269729097,0.1248460463105589,-0.01559138588255286,-0.01625839428292603,-0.05323888667281371,0.06722185430549973,-0.0490877148079949,-0.05039368886946847,0.0897270838973875,0.00754589058726465,-0.06693447805463611,-0.1193740974362337,-0.02214573804045866,0.02930806967704801,-0.009567144727872222,-0.02288991169653539,0.04256313697292451,-0.08190168271952417,0.008274133732539695,-0.02299227162395361,0.0111923018567119,-0.009872522389769637,0.06866110814693088,0.04622954799009332,0.05498202029091768,-0.06672541846259043,-0.05130079655965012,0.1107659505844031,0.07912810279475517,0.02246390669165305,-0.06997067603392053,-0.02069109953229961,-0.05191987832821615,-0.01971016519416264|
|-0.1100208269729097,0.1248460463105589,-0.01559138588255286,-0.01625839428292603,-0.05323888667281371,0.06722185430549973,-0.0490877148079949,-0.05039368886946847,0.0897270838973875,0.00754589058726465,-0.06693447805463611,-0.1193740974362337,-0.02214573804045866,0.02930806967704801,-0.009567144727872222,-0.02288991169653539,0.04256313697292451,-0.08190168271952417,0.008274133732539695,-0.02299227162395361,0.0111923018567119,-0.009872522389769637,0.06866110814693088,0.04622954799009332,0.05498202029091768,-0.06672541846259043,-0.05130079655965012,0.1107659505844031,0.07912810279475517,0.02246390669165305,-0.06997067603392053,-0.02069109953229961,-0.05191987832821615,-0.01971016519416264|
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+