Options to disable annotations

gopow.go

@@ -56,7 +56,7 @@ func main() {
 		cli.StringFlag{
 			Name:  "input,i",
 			Value: "",
-			Usage: "CSV input file generated by rtl_power",
+			Usage: "CSV input file generated by rtl_power [required]",
 		},
 		cli.StringFlag{
 			Name:  "output,o",
@@ -72,6 +72,10 @@ func main() {
 			Name:  "verbose",
 			Usage: "Enable more verbose output",
 		},
+		cli.BoolFlag{
+			Name:  "no-annotations",
+			Usage: "Disabled annotations such as time and frequency scales",
+		},
 	}
 
 	app.Run(os.Args)

internal/gopow/gopow.go

@@ -16,6 +16,7 @@ type RunConfig struct {
 	InputFile   string
 	OutputFile  string
 	Format      string
+	Annotations bool
 }
 
 type GoPow struct {
@@ -30,6 +31,7 @@ func NewGoPow(c *cli.Context) (*GoPow, error) {
 		InputFile:   c.String("input"),
 		OutputFile:  c.String("output"),
 		Format:      c.String("format"),
+		Annotations: !c.Bool("no-annotations"),
 	}
 
 	if config.InputFile == "" {
@@ -79,15 +81,19 @@ func (g *GoPow) Render() error {
 		}
 	}
 
+	if g.config.Annotations {
+
 		annotator, err := NewAnnotator(g.image, table)
 		if err != nil {
 			return err
 		}
 
-	// add some frequency and date annotation
+		// add some frequency and time annotation
 		annotator.DrawXScale()
 		annotator.DrawYScale()
 
+	}
+
 	return nil
 }