sparkchart.go
func (b *SparkChart) SetValueWidth(width int) {
	b.mtx.Lock()
	defer b.mtx.Unlock()

	b.valueWidth = width
}
func (b *SparkChart) SetValueWidth(width int) {
	b.mtx.Lock()
	defer b.mtx.Unlock()

	b.valueWidth = width
}
func ( b * SparkChart ) SetValueWidth ( width int ) { b . mtx . Lock ( ) defer b . mtx . Unlock ( ) b . valueWidth = width }
// SetValueWidth changes width of the value panel on the left
SetValueWidth changes width of the value panel on the left