getLabelMinX method
Get the minimum (the first, the leftmost) X label value.
If _initialLabelMinX
is null, which means that labelMinX value from the constructor
was not supplied, minimum X label value will be retrieved from
floor(minimum X value in data points).
Implementation
double getLabelMinX() {
if (_initialLabelMinX != null) return _initialLabelMinX!;
return _dataPointMinX.floorToDouble();
}