Contour Lines: Duplicate Key Error #4787
Description
Issue: (Describe the bug here)
Receiving the following error when trying to add contour lines.
I'm following the contour lines with heatmap cookbook example, and the heatmap portion works great, but I get the below when attempting to add contour lines using the same data used for the heatmap.
Error: "An item with the same key has already been added. Key: 6517"
Stack Trace:
at System.ThrowHelper.ThrowAddingDuplicateWithKeyArgumentException[T](T key)
at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 source, Func`2 keySelector, IEqualityComparer`1 comparer)
at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 source, Func`2 keySelector)
at ScottPlot.Triangulation.RectangularGrid.<>c__DisplayClass0_0.<GetContourLines>b__0(Double z)
at System.Linq.Enumerable.SelectArrayIterator`2.MoveNext()
at System.Linq.Enumerable.SelectManySingleSelectorIterator`2.ToList()
at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
at ScottPlot.Triangulation.RectangularGrid.GetContourLines(Coordinates3d[,] coordinateGrid, Double[] zs, Boolean fixContourDirections)
at ScottPlot.Plottables.ContourLines.Update(Coordinates3d[,] coordinateGrid)
at ScottPlot.PlottableAdder.ContourLines(Coordinates3d[,] coordinates, Int32 count)
at ScottPlotContourLineError.Program.Main(String[] args) in C:\Users\scott.stanaland\source\repos\ScottPlotContourLineError\Program.cs:line 51
The data needed to repro the issue was too large to embed in the code, so a text file is attached.
ScottPlot Version: (What NuGet package are you using?)
5.0.54
Code Sample: See http://scottplot.net/faq/repro/ for tips about creating reproducible code samples
using ScottPlot;
using ScottPlot.MultiplotLayouts;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;
using static System.Runtime.InteropServices.JavaScript.JSType;
namespace ScottPlotContourLineError
{
internal class Program
{
static void Main(string[] args)
{
double[,] data;
double[] ud = { 10.00, 9.80, 9.60, 9.40, 9.20, 9.00, 8.80, 8.60, 8.40, 8.20, 8.00, 7.80, 7.60, 7.40, 7.20, 7.00, 6.80, 6.60, 6.40, 6.20, 6.00, 5.80, 5.60, 5.40, 5.20, 5.00, 4.80, 4.60, 4.40, 4.20, 4.00, 3.80, 3.60, 3.40, 3.20, 3.00, 2.80, 2.60, 2.40, 2.20, 2.00, 1.80, 1.60, 1.40, 1.20, 1.00, 0.80, 0.60, 0.40, 0.20, 0.00, -0.20, -0.40, -0.60, -0.80, -1.00, -1.20, -1.40, -1.60, -1.80, -2.00, -2.20, -2.40, -2.60, -2.80, -3.00, -3.20, -3.40, -3.60, -3.80, -4.00, -4.20, -4.40, -4.60, -4.80, -5.00, -5.20, -5.40, -5.60, -5.80, -6.00, -6.20, -6.40, -6.60, -6.80, -7.00, -7.20, -7.40, -7.60, -7.80, -8.00, -8.20, -8.40, -8.60, -8.80, -9.00, -9.20, -9.40, -9.60, -9.80, -10.00 };
double[] lr = { -20.00, -19.80, -19.60, -19.40, -19.20, -19.00, -18.80, -18.60, -18.40, -18.20, -18.00, -17.80, -17.60, -17.40, -17.20, -17.00, -16.80, -16.60, -16.40, -16.20, -16.00, -15.80, -15.60, -15.40, -15.20, -15.00, -14.80, -14.60, -14.40, -14.20, -14.00, -13.80, -13.60, -13.40, -13.20, -13.00, -12.80, -12.60, -12.40, -12.20, -12.00, -11.80, -11.60, -11.40, -11.20, -11.00, -10.80, -10.60, -10.40, -10.20, -10.00, -9.80, -9.60, -9.40, -9.20, -9.00, -8.80, -8.60, -8.40, -8.20, -8.00, -7.80, -7.60, -7.40, -7.20, -7.00, -6.80, -6.60, -6.40, -6.20, -6.00, -5.80, -5.60, -5.40, -5.20, -5.00, -4.80, -4.60, -4.40, -4.20, -4.00, -3.80, -3.60, -3.40, -3.20, -3.00, -2.80, -2.60, -2.40, -2.20, -2.00, -1.80, -1.60, -1.40, -1.20, -1.00, -0.80, -0.60, -0.40, -0.20, -0.00, 0.20, 0.40, 0.60, 0.80, 1.00, 1.20, 1.40, 1.60, 1.80, 2.00, 2.20, 2.40, 2.60, 2.80, 3.00, 3.20, 3.40, 3.60, 3.80, 4.00, 4.20, 4.40, 4.60, 4.80, 5.00, 5.20, 5.40, 5.60, 5.80, 6.00, 6.20, 6.40, 6.60, 6.80, 7.00, 7.20, 7.40, 7.60, 7.80, 8.00, 8.20, 8.40, 8.60, 8.80, 9.00, 9.20, 9.40, 9.60, 9.80, 10.00, 10.20, 10.40, 10.60, 10.80, 11.00, 11.20, 11.40, 11.60, 11.80, 12.00, 12.20, 12.40, 12.60, 12.80, 13.00, 13.20, 13.40, 13.60, 13.80, 14.00, 14.20, 14.40, 14.60, 14.80, 15.00, 15.20, 15.40, 15.60, 15.80, 16.00, 16.20, 16.40, 16.60, 16.80, 17.00, 17.20, 17.40, 17.60, 17.80, 18.00, 18.20, 18.40, 18.60, 18.80, 19.00, 19.20, 19.40, 19.60, 19.80, 20.00 };
// data needed to repro the issue was too long to embed in the code because the text length was too long for the github issue
// including a text file with the data
data = GetTestData();
Plot plt = new();
Coordinates3d[,] cs = new Coordinates3d[ud.Length, lr.Length];
for (int y = 0; y < cs.GetLength(0); y++)
{
for (int x = 0; x < cs.GetLength(1); x++)
{
cs[y, x] = new(ud[y], lr[x], data[y, x]);
}
}
var hm = plt.Add.Heatmap(cs);
CoordinateRange yRange = new(ud.Min(), ud.Max());
CoordinateRange xRange = new(lr.Min(), lr.Max());
hm.Rectangle = new(xRange, yRange);
hm.Colormap = new ScottPlot.Colormaps.Jet(); // .MellowRainbow();
hm.Smooth = true;
plt.Add.ColorBar(hm);
// show contour
//// *** this line caused the error
var contour = plt.Add.ContourLines(cs, count: 5);
contour.LabelStyle.Bold = true;
contour.LinePattern = LinePattern.DenselyDashed;
contour.LineColor = Colors.Black.WithAlpha(.5);
plt.YLabel("Up - Down");
plt.XLabel("Left - Right");
// display it in a Windows Form
Form form = new() { Width = 800, Height = 600 };
ScottPlot.WinForms.FormsPlot formsPlot1 = new() { Dock = DockStyle.Fill };
formsPlot1.Reset(plt);
formsPlot1.Refresh();
form.Controls.Add(formsPlot1);
form.ShowDialog();
}
static double[,] GetTestData()
{
string datastr;
datastr = File.ReadAllText("C:\\worktemp\\testdata.txt");
var rows = datastr.Split("|");
if (rows == null) return null;
var firstrowcols = rows[0].Split(",");
double[,] data = new double[rows.Length, firstrowcols.Length];
for (int y = 0; y < rows.Length; y++)
{
for (int x = 0; x < firstrowcols.Length; x++)
{
var cols = rows[y].Split(",");
double num;
if (!double.TryParse(cols[x], out num))
{
num = double.NaN;
}
data[y, x] = num;
}
}
return data;
}
}
}