What is the meaning of the Steps options?
They represent basic steps to consider for the axis.
Algorithm goes roughly like this:
1) Consider a set of possible step values
{ v: v = s * n * 10^p, s in
Steps, n in
NiceSteps, n >= 1.0, p >= 0 }
2) From that set, select values which are allowed by limits in
Params property
3) Is there are several of thouse, take the one which gives interval count closest to the
Params.Count4) Is there are several of (maximum two) values, take largest one.
When I change the DateTimeFormat the axis is not updated immediately at design time
Fixed in r39377
how do I get it to set marks at the beginning of each month?
According to the algorithm above,
TAChart determined that 10 days step is preferable to month. You can: set
RandomChartSource1.XMax = 40460, increase
DateTimeIntervalChartSource1.Params.MinLength and/or
MaxLength, exclude
dtsDay from
Steps, or perform another similar change to see month-sized intervals.
Additionally, TAChart have selected end-of-month instead of start-of month date, which is fixed in r39376.