Initial data commit

Task/Plot-coordinate-pairs/Go/plot-coordinate-pairs-1.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+  "fmt"
+  "log"
+  "os/exec"
+)
+
+var (
+  x = []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
+  y = []float64{2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0}
+)
+
+func main() {
+  g := exec.Command("gnuplot", "-persist")
+  w, err := g.StdinPipe()
+  if err != nil {
+    log.Fatal(err)
+  }
+  if err = g.Start(); err != nil {
+    log.Fatal(err)
+  }
+  fmt.Fprintln(w, "unset key; plot '-'")
+  for i, xi := range x {
+    fmt.Fprintf(w, "%d %f\n", xi, y[i])
+  }
+  fmt.Fprintln(w, "e")
+  w.Close()
+  g.Wait()
+}

Task/Plot-coordinate-pairs/Go/plot-coordinate-pairs-2.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+    "log"
+
+    "github.com/gonum/plot"
+    "github.com/gonum/plot/plotter"
+    "github.com/gonum/plot/plotutil"
+    "github.com/gonum/plot/vg"
+)
+
+var (
+    x = []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
+    y = []float64{2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0}
+)
+
+func main() {
+    pts := make(plotter.XYs, len(x))
+    for i, xi := range x {
+        pts[i] = struct{ X, Y float64 }{float64(xi), y[i]}
+    }
+    p, err := plot.New()
+    if err != nil {
+        log.Fatal(err)
+    }
+    if err = plotutil.AddScatters(p, pts); err != nil {
+        log.Fatal(err)
+    }
+    if err := p.Save(3*vg.Inch, 3*vg.Inch, "points.svg"); err != nil {
+        log.Fatal(err)
+    }
+}