Add plotting API version of anscombe example

Author: mattpap

examples/src/main/scala/plotting/Anscombe.scala

@@ -0,0 +1,72 @@
+package io.continuum.bokeh
+package examples
+package plotting
+
+import breeze.linalg.{DenseMatrix,DenseVector,linspace}
+
+import thirdparty._
+
+object Anscombe extends Example {
+    val anscombe_quartet = DenseMatrix(
+        (10.0,  8.04, 10.0, 9.14, 10.0,  7.46,  8.0,  6.58),
+        ( 8.0,  6.95,  8.0, 8.14,  8.0,  6.77,  8.0,  5.76),
+        (13.0,  7.58, 13.0, 8.74, 13.0, 12.74,  8.0,  7.71),
+        ( 9.0,  8.81,  9.0, 8.77,  9.0,  7.11,  8.0,  8.84),
+        (11.0,  8.33, 11.0, 9.26, 11.0,  7.81,  8.0,  8.47),
+        (14.0,  9.96, 14.0, 8.10, 14.0,  8.84,  8.0,  7.04),
+        ( 6.0,  7.24,  6.0, 6.13,  6.0,  6.08,  8.0,  5.25),
+        ( 4.0,  4.26,  4.0, 3.10,  4.0,  5.39, 19.0, 12.50),
+        (12.0, 10.84, 12.0, 9.13, 12.0,  8.15,  8.0,  5.56),
+        ( 7.0,  4.82,  7.0, 7.26,  7.0,  6.42,  8.0,  7.91),
+        ( 5.0,  5.68,  5.0, 4.74,  5.0,  5.73,  8.0,  6.89))
+
+    object circles extends ColumnDataSource {
+        val xi   = column(anscombe_quartet(::, 0))
+        val yi   = column(anscombe_quartet(::, 1))
+        val xii  = column(anscombe_quartet(::, 2))
+        val yii  = column(anscombe_quartet(::, 3))
+        val xiii = column(anscombe_quartet(::, 4))
+        val yiii = column(anscombe_quartet(::, 5))
+        val xiv  = column(anscombe_quartet(::, 6))
+        val yiv  = column(anscombe_quartet(::, 7))
+    }
+
+    object lines extends ColumnDataSource {
+        val x = column(linspace(-0.5, 20.5, 10))
+        val y = column(x.value*0.5 + 3.0)
+    }
+
+    object lines1 extends ColumnDataSource {
+        val x = column(linspace(-1.5, 20.5, 10))
+        val y = column(x.value*0.7 + 1.0)
+    }
+
+    val xdr = Range1d(-0.5, 20.5)
+    val ydr = Range1d(-0.5, 20.5)
+
+    type Col = circles.Column[DenseVector, Double]
+
+    def make_plot(title: String, x_col: Col, y_col: Col) = {
+        val fig = Figure(title, 400, 400)
+            .x_range(xdr)
+            .y_range(ydr)
+            .border_fill_color(Color.White)
+            .background_fill_color("#e9e0db")
+        // fig.x_axis.axis_line_color()
+        // fig.y_axis.axis_line_color()
+        fig.line(lines)(_.x, _.y).line_color("#666699").line_width(2)
+        fig.circle(x_col, y_col).size(12).fill_color("#cc6633").line_color("#cc6633").fill_alpha(50%%)
+        fig
+    }
+
+    val I   = make_plot("I",   circles.xi,   circles.yi)
+    val II  = make_plot("II",  circles.xii,  circles.yii)
+    val III = make_plot("III", circles.xiii, circles.yiii)
+    val IV  = make_plot("IV",  circles.xiv,  circles.yiv)
+
+    val grid = GridPlot((I,   II),
+                        (III, IV)).width(800)
+
+    val html = grid.save("anscombe.html", config.resources)
+    info(s"Wrote ${html.file}. Open ${html.url} in a web browser.")
+}

examples/src/test/scala/Examples.scala

@@ -39,6 +39,10 @@ class ExamplesSpec extends Specification with RunMatchers {
         "run Trail"           in { models.Trail           must run }
         "run TwinAxis"        in { models.TwinAxis        must run }
     }
+
+    "examples.plotting" should {
+        "run Anscombe"        in { plotting.Anscombe      must run }
+    }
 }
 
 trait RunMatchers {