Scatter plot render artifacts #889
Description
If you have different densities on the x-axis of your scatter data and you zoom into a high density area there are render errors drawing additional horizontal lines where we shouldn't have there.
example code:
var plt = new ScottPlot.Plot(600, 400);
int pointCount = 1000;
double[] ys = new double[pointCount];
double[] xs = new double[pointCount];
double currentX = 0;
for (int i = 0; i < pointCount; i++)
{
if ((i % 100) < 10)
currentX += 10;
else
currentX += 0.001;
xs[i] = currentX;
ys[i] = i % 2 == 0 ? 1.0 : 0.0;
}
plt.AddScatterStep(xs, ys);Also belongs to a normal ScatterPlot (no step style) where you add additional data points to create the steps "by hand" within the loop like:
var plt = new ScottPlot.Plot(600, 400);
int pointCount = 1000;
var xs = new List<double>();
var ys = new List<double>();
double last_y = -1.0;
double currentX = 0;
for (int i = 0; i < pointCount; i++)
{
if ((i % 100) < 10)
currentX += 10;
else
currentX += 0.001;
if (last_y >= 0.0)
{
xs.Add(currentX);
ys.Add(last_y);
}
xs.Add(currentX);
last_y = i % 2 == 0 ? 1.0 : 0.0;
ys.Add(last_y);
}
plt.AddScatter(xs.ToArray(), ys.ToArray());