HorizontalPlotter.cs

using ScottPlot;
using System;
using System.Collections.Generic;
using System.Linq;

var plt = new Plot(600, 400); // Fixed width, initial height

// Example data for bars
List<DateTime> startTimes = new List<DateTime>() { /* populate with start times */ };
List<DateTime> endTimes = new List<DateTime>() { /* populate with end times */ };

// Example times for vertical lines
List<DateTime> lineTimes = new List<DateTime>() { /* populate with times for vertical lines */ };

// Convert DateTime to double (OADate format used by ScottPlot)
double[] xs1 = startTimes.Select(t => t.ToOADate()).ToArray();
double[] xs2 = endTimes.Select(t => t.ToOADate()).ToArray();
double[] lineXPositions = lineTimes.Select(t => t.ToOADate()).ToArray();

// Set the Y values as row indices (1, 2, 3, ...)
double[] yPositions = Enumerable.Range(0, startTimes.Count).Select(i => (double)i).ToArray();

// Add bars to the plot
for (int i = 0; i < startTimes.Count; i++)
{
    double width = xs2[i] - xs1[i];
    plt.AddHorizontalBar(width, yPositions[i], xs1[i]);
}

// Add vertical dotted lines
foreach (var x in lineXPositions)
{
    var vLine = plt.AddVerticalLine(x);
    vLine.LineStyle = LineStyle.Dot;
    vLine.Color = System.Drawing.Color.Gray; // Customize color if needed
}

// Adjust height based on row count
plt.Height = startTimes.Count * 30; // Adjust 30 based on row spacing

// Format x-axis as dates/times
plt.XAxis.DateTimeFormat(true);

plt.SaveFig("plot_with_lines.png"); // Save or display the plot