Hello,

I am designing a chart according to the post at this address:

https://www.nevron.com/Forum/8941/Align-a-Chart-With-PredefinedChartStyleHorizontalRight

I would like to synchronize the axis of the stock chart and the horizontal bar chart. I'm using the following code:

// stock chart Y axis
_AxisYPrice = _ChartPrice.Axis(StandardAxis.PrimaryY);
_AxisYPrice.View = new NRangeAxisView(new NRange1DD(LowValue, HighValue));

// horizontal bar chart x-axis
_AxisXLevel2 = _ChartLevel2.Axis(StandardAxis.PrimaryX);
_AxisXLevel2.View = new NRangeAxisView(new NRange1DD(LowValue, HighValue));

This almost works, but the center horizontal bar does not always alighn exactly with the latest closing tick mark. I made the horizontal bar chart x-axis visible, and found that the limits are slightly different. (Please see the screen capture following.) Is there a way to make the axes ranges exact?

Thank you, Brian Warren

Hi Brian,

If the difference is only in the range 1-2 pixels then this may be caused by different pixel snapping and there is no way to avoid that. Do you get a larger offset between the two? Alternatively you can use range series scaled on the secondary Y axis instead of a bar with right to left orientation...

Best Regards,
Nevron Support Team

Hello,
Thank you for the response.
Sometimes the offset is only a few pixels, but other times it is very large as in this screenshot:


The center peak of the histogram on the right is at a significantly different than right-most closing tick on the price chart.

I looked into the NRangeSeries example. It makes a very nice histogram. However, I would still want it oriented left to right, not vertically as in the example. The price should match the bin values, not the bin heights. I think this means I am left with the same problem, trying to synchronize the x-axis of the NRangeSeries with the y-axis of the NStockSeries. Is there something else I can try?

I would still be interested in seeing how the axis ranges are expanded from the set values. For instance, if I set an NRangeAxisView to (2, 8), will the axis always be set to (0, 10). In my screenshot above, for the same values passed to NRangeAxisView, I would like the y-axis of the price and the x-axis of the L2 both expanded to the same values (4280, 4305).

Thank you for the help, Brian Warren

Hi Warren,

By default the axis will round the current range to the nearest tick for aesthetic reasons. In this case however it can lead to displacement so you need to turn it off:

NLinearScaleConfigurator scaleY = chart.Axis(StandardAxis.PrimaryY).ScaleConfigurator as NLinearScaleConfigurator;
scaleY.RoundToTickMax = false;
scaleY.RoundToTickMin = false;
Let us know if this fixes the problem.

Best Regards,
Nevron Support Team