I'm using the following code to generate a custom logarithmic scale for my Y axis:

NLogarithmicScaleConfigurator logarithmicScale = new NLogarithmicScaleConfigurator();
logarithmicScale.CustomMajorTicks.Clear();
logarithmicScale.MajorTickMode = MajorTickMode.CustomTicks;
for (double i = min - 5; i <= max + 5; i = i + 5)
logarithmicScale.CustomMajorTicks.Add(i);
logarithmicScale.MajorGridStyle.SetShowAtWall(ChartWallType.Back, true);
logarithmicScale.MajorGridStyle.LineStyle.Pattern = LinePattern.Dot;
logarithmicScale.MajorGridStyle.LineStyle.Color = Color.Black;
logarithmicScale.MinorGridStyle.SetShowAtWall(ChartWallType.Back, false);
logarithmicScale.UseOrigin = false;
logarithmicScale.ViewRangeInflateMode = ScaleViewRangeInflateMode.MajorTickExtend;
logarithmicScale.InflateViewRangeBegin = true;
logarithmicScale.InflateViewRangeEnd = true;
logarithmicScale.RulerStyle.BorderStyle.Color = Color.Black;
logarithmicScale.OuterMajorTickStyle.LineStyle.Color = Color.Black;
logarithmicScale.InnerMajorTickStyle.Length = new NLength(0);
logarithmicScale.OuterMajorTickStyle.Length = new NLength(2);
logarithmicScale.LabelStyle.TextStyle.FillStyle = new NColorFillStyle(Color.Black);

Using this code the axis just shows no labels or gridlines (so I can not say if it is scaled logarithmically or not).

Just changing the first line to:

NLinearScaleConfigurator logarithmicScale = new NLinearScaleConfigurator();

and my code works as expected. Did I find a bug or am I missing something here?

Regards,
Matthias.

Hi Matthias,

On a logarithmic scale the custom major ticks actual values are interpretted as Math.Log(logbase, customTick) - just tested with the following code:

   NChart chart = nChartControl1.Charts[0];
   NLogarithmicScaleConfigurator logarithmicScale = new NLogarithmicScaleConfigurator();

   logarithmicScale.CustomMajorTicks.Clear();
   logarithmicScale.MajorTickMode = MajorTickMode.CustomTicks;

   for (double i = 0; i <= max; i++)
   {
    logarithmicScale.CustomMajorTicks.Add(i);
   }

   NLineSeries line = new NLineSeries();

   for (int j = 0; j < 10; j++)
   {
    line.Values.Add(Math.Pow(10, j));
   }

   chart.Series.Add(line);
   chart.Axis(StandardAxis.PrimaryY).ScaleConfigurator = logarithmicScale;

and the axis was behaving as expected.

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

Best Regards,
Nevron Support Team

Yes. It's working now. Maybe this should be added to the documentation.