diff --git a/p2/run.go b/p2/run.go
index 0390ba1..c2b5742 100644
--- a/p2/run.go
+++ b/p2/run.go
@@ -3,11 +3,15 @@ package main
 import (
 	"flag"
 	"log"
+	"os/exec"
 
 	"git.dotya.ml/wanderer/ak9im/p2/stats"
 )
 
-var datafile = flag.String("datafile", "", "read data from this file")
+var (
+	datafile = flag.String("datafile", "", "read data from this file")
+	vis      = flag.Bool("vis", false, "run 'python visualise.py' to produce visualisations")
+)
 
 func run() error {
 	flag.Parse()
@@ -76,5 +80,29 @@ func run() error {
 		}
 	}
 
+	if *vis {
+		err := visualise()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func visualise() error {
+	red := "\033[31m"
+	cyan := "\033[36m"
+	reset := "\033[0m"
+	f := "visualise.py"
+
+	log.Printf("running %s`python %s`%s", cyan, f, reset)
+
+	out, err := exec.Command("python", f).CombinedOutput()
+	if err != nil {
+		log.Printf("visualise failed with:\n\n%s%s%s\n", red, out, reset)
+		return err
+	}
+
 	return nil
 }