DateTimeAxis Question

Oystein Bjorke 5 years ago 0
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sjren082013 wrote at 2013-08-13 02:48:

when using DateTimeAxis,I found a question.
bottomAxis[i] = new DateTimeAxis(AxisPosition.Bottom, "时间", "yyyy/MM/dd\nhh:mm:ss", DateTimeIntervalType.Milliseconds);
bottomAxis[i].MajorStep = 1.0 / 3600 / 24;
bottomAxis[i].MinorStep = 1.0 / 3600 / 24 / 10;
bottomAxis[i].ShowMinorTicks = true;
I want to set MajorStep=1 second and Minorstep=0.1 second.when I started,the DateTimeInterval was correct.
But when I set :
bottomAxis[i].Maximum = DateTimeAxis.ToDouble(DateTime.Now);
bottomAxis[i].Minimum = DateTimeAxis.ToDouble(DateTime.Now.AddMinutes(-1));
the DateTimeInterval become 9 Second per step.Why?
Please revert. Thanks in advance.

Regards
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