Hi,

I need to plot data in log scale (y-axis, lineseries). My data often contains zeros. I've noticed that when this is the case, the y-axis behaves badly. When there is a zero, the minimum value is set to 1.

When all values are smaller than 1 this fails badly (see example)


var rand = new Random();
var rand_seq = Enumerable.Repeat(0, 100).Select(i => rand.NextDouble()).ToArray();
rand_seq[20] = 0;
var chart = new NCartesianChart();
nChartControl1.Charts.Add(chart);
var line = new NLineSeries();
line.DataLabelStyle.Visible = false;
chart.Axis(StandardAxis.PrimaryY).ScaleConfigurator = new NLogarithmicScaleConfigurator();

chart.Series.Add(line);
line.Values.FillFromEnumerable(rand_seq);
nChartControl1.Refresh();


Also, when using larger values than 1, it seems that the value of log(0) is simply set to 1. This tricks the user into believeing that the data point is 1 instead of zero. What I would like, is a solution where points neighboring log(0) simply are plot with a vertical line (i.e. simulating minus infinity).

Is there any way to achieve this?

best regards

Fredrik Östlund