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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Pipeline from scala-constructed pointcloud","articleBody":"Hello,\r\n\r\ni couldn't find documentation so far. My problem is that i have a dataset that can be converted to a pointcloud. I do the conversion as follows:\r\n\r\n```scala\r\n  def toPointCloud(sweeps: Seq[Tuple3[Coordinate, Double, Seq[XZ]]]): PointCloud = {\r\n    // the Double in the tuple3 is the azimuth.\r\n    val points = sweeps.map(gs =\u003e projectSweep(gs._3, gs._2, gs._1)).\r\n          reduce((a,b) =\u003e DenseMatrix.horzcat(a,b))\r\n    var v = new util.HashMap[String, SizedDimType]()\r\n    v += \"X\" -\u003e SizedDimType(DimType.X, java.lang.Double.BYTES, 0)\r\n    v += \"Y\" -\u003e SizedDimType(DimType.Y, java.lang.Double.BYTES, java.lang.Double.BYTES)\r\n    v += \"Z\" -\u003e SizedDimType(DimType.Z, java.lang.Double.BYTES, 2*java.lang.Double.BYTES)\r\n    val bos = ByteBuffer.allocate(points.cols * points.rows * java.lang.Double.BYTES).order(ByteOrder.nativeOrder());\r\n    val ios = bos.asDoubleBuffer();\r\n    ios.put(points.copy.data)\r\n    return new PointCloud(bos.array(), v)\r\n  }\r\n\r\n```\r\n\r\ni verified and the pointcloud seems to be okay (i can get points out of it). I'd like to create a PDAL pipeline now using this pointcloud so that i can reproject/persist/... it.\r\n\r\nIs there a way to do this ?\r\n\r\ngreetings,\r\nFrank\r\n\r\n\r\n\r\n","author":{"url":"https://github.com/kervel","@type":"Person","name":"kervel"},"datePublished":"2019-10-25T14:02:39.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/22/java/issues/22"}