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

@@ -13,9 +13,10 @@ import (
 )
 
 type RunConfig struct {
-	InputFile  string
-	OutputFile string
-	Format     string
+	InputFile   string
+	OutputFile  string
+	Format      string
+	Annotations bool
 }
 
 type GoPow struct {
@@ -27,9 +28,10 @@ type GoPow struct {
 func NewGoPow(c *cli.Context) (*GoPow, error) {
 
 	config := &RunConfig{
-		InputFile:  c.String("input"),
-		OutputFile: c.String("output"),
-		Format:     c.String("format"),
+		InputFile:   c.String("input"),
+		OutputFile:  c.String("output"),
+		Format:      c.String("format"),
+		Annotations: !c.Bool("no-annotations"),
 	}
 
 	if config.InputFile == "" {
@@ -79,14 +81,18 @@ func (g *GoPow) Render() error {
 		}
 	}
 
-	annotator, err := NewAnnotator(g.image, table)
-	if err != nil {
-		return err
-	}
+	if g.config.Annotations {
 
-	// add some frequency and date annotation
-	annotator.DrawXScale()
-	annotator.DrawYScale()
+		annotator, err := NewAnnotator(g.image, table)
+		if err != nil {
+			return err
+		}
+
+		// add some frequency and time annotation
+		annotator.DrawXScale()
+		annotator.DrawYScale()
+
+	}
 
 	return nil
 }