I'm trying to draw an axis for the surface plot.  I would arrows at the ends and the letters x, y and z.  Is it possible to draw the surface plot so that the axis is in the center?

Hi Luis,

Currently, the axes do not support caps in 3D. To cross the axes at some particular value you need to set a cross-axis anchor to each of the axes - the following example shows how to do this:

NChart chart = nChartControl1.Charts[0];
chart.Enable3D = true;

chart.Wall(ChartWallType.Back).Visible = false;
chart.Wall(ChartWallType.Floor).Visible = false;
chart.Wall(ChartWallType.Left).Visible = false;

NAxis xAxis = chart.Axis(StandardAxis.PrimaryX);
NAxis yAxis = chart.Axis(StandardAxis.PrimaryY);
NAxis zAxis = chart.Axis(StandardAxis.Depth);

xAxis.ScaleConfigurator = new NLinearScaleConfigurator();
yAxis.ScaleConfigurator = new NLinearScaleConfigurator();
zAxis.ScaleConfigurator = new NLinearScaleConfigurator();

xAxis.Anchor = new NCrossAxisAnchor(AxisOrientation.Horizontal);
((NCrossAxisAnchor)xAxis.Anchor).Crossings.Add(new NValueAxisCrossing(yAxis, 0));
((NCrossAxisAnchor)xAxis.Anchor).Crossings.Add(new NValueAxisCrossing(zAxis, 0));

yAxis.Anchor = new NCrossAxisAnchor(AxisOrientation.Vertical);
((NCrossAxisAnchor)yAxis.Anchor).Crossings.Add(new NValueAxisCrossing(xAxis, 0));
((NCrossAxisAnchor)yAxis.Anchor).Crossings.Add(new NValueAxisCrossing(zAxis, 0));

zAxis.Anchor = new NCrossAxisAnchor(AxisOrientation.Depth);
((NCrossAxisAnchor)zAxis.Anchor).Crossings.Add(new NValueAxisCrossing(xAxis, 0));
((NCrossAxisAnchor)zAxis.Anchor).Crossings.Add(new NValueAxisCrossing(yAxis, 0));

NGridSurfaceSeries surface = new NGridSurfaceSeries();
chart.Series.Add(surface);
chart.Width = chart.Height = chart.Depth = 50;
surface.XValuesMode = GridSurfaceValuesMode.OriginAndStep;
surface.OriginX = -1;
surface.StepX = 2;
surface.ZValuesMode = GridSurfaceValuesMode.OriginAndStep;
surface.OriginZ = -1;
surface.StepZ = 2;
surface.Data.SetSize(2, 2);

surface.Data.SetValue(0, 0, -1);
surface.Data.SetValue(0, 1, -1);
surface.Data.SetValue(1, 0, 1);
surface.Data.SetValue(1, 1, 1);

nChartControl1.Controller.Tools.Add(new NPanelSelectorTool());
nChartControl1.Controller.Tools.Add(new NTrackballTool());

We hope this helps - let us know if you have any questions or meet any problems.

Best Regards,
Nevron Support Team