Merge d2533da into 73a6514

widgets/linechart/linechart_test.go

@@ -371,7 +371,6 @@ func TestLineChartDraws(t *testing.T) {
 			desc: "custom Y scale, negative only, values fit",
 			opts: []Option{
 				YAxisCustomScale(-200, -100),
-				YAxisAdaptive(),
 			},
 			canvas: image.Rect(0, 0, 20, 10),
 			writes: func(lc *LineChart) error {

widgets/linechart/options.go

@@ -140,12 +140,15 @@ type customScale struct {
 // i.e. smaller than the minimum or larger than the maximum.
 // Both the minimum and the maximum must be valid numbers and the minimum must
 // be smaller than the maximum.
+//
+// Providing this option also sets YAxisAdaptive.
 func YAxisCustomScale(min, max float64) Option {
 	return option(func(opts *options) {
 		opts.yAxisCustomScale = &customScale{
 			min: min,
 			max: max,
 		}
+		opts.yAxisMode = axes.YScaleModeAdaptive
 	})
 }