Another update from ingydotnet^djgoku

Task/Plot-coordinate-pairs/Go/plot-coordinate-pairs.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()
+}