public void blobcounter_test()
{
string basePath = Path.Combine(NUnit.Framework.TestContext.CurrentContext.TestDirectory, "Resources");
#region doc_process
// Load an example image containing blobs (such the sample from the Blob Detection sample applications)
// https://github.com/accord-net/framework/raw/development/Samples/Imaging/Detection%20(Blobs)/demo.png
Bitmap image = Accord.Imaging.Image.FromFile(Path.Combine(basePath, "blob-input.png"));
// Creeate a new blob counter object
var blobCounter = new BlobCounter();
// Process the image looking for blobs
blobCounter.ProcessImage(image);
// Get information about all the image blobs found:
Blob[] blobs = blobCounter.GetObjectsInformation();
// Prepare to extract their Convex Hull
var grahamScan = new GrahamConvexHull();
var colors = new ColorSequenceCollection();
// For each blob in the image
for (int i = 0; i < blobs.Length; i++)
{
// Get the blob
Blob blob = blobs[i];
// Collect edge points
List <IntPoint> edgePoints = blobCounter.GetBlobsEdgePoints(blob);
// Find convex hull
List <IntPoint> hull = grahamScan.FindHull(edgePoints);
// Prepare to mark the hull in the image
var marker = new PointsMarker(colors[i])
{
Points = hull,
Connect = true // connect the points with line segments
};
// Draw the hull lines
marker.ApplyInPlace(image);
}
// Save the image to disk
image.Save(Path.Combine(basePath, "test.png"));
#endregion
Assert.AreEqual(25, blobs.Length);
}
public void CreateScatterplot(ZedGraphControl zgc, double[,] graph)
{
GraphPane myPane = zgc.GraphPane;
myPane.CurveList.Clear();
// Set the titles
myPane.Title.IsVisible = false;
myPane.XAxis.Title.Text = columnNames[0];
myPane.YAxis.Title.Text = columnNames[1];
// Classification problem
var lists = new Dictionary <double, PointPairList>();
var unique = graph.GetColumn(2).Distinct();
foreach (var u in unique)
{
lists[u] = new PointPairList();
}
for (int i = 0; i < graph.GetLength(0); i++)
{
lists[graph[i, 2]].Add(graph[i, 0], graph[i, 1]);
}
var seq = new ColorSequenceCollection();
// Add the curve
for (int i = 0; i < unique.Length; i++)
{
var color = seq.GetColor(i);
LineItem myCurve = myPane.AddCurve("G" + i,
lists[unique[i]], color,
SymbolType.Diamond);
myCurve.Line.IsVisible = false;
myCurve.Symbol.Border.IsVisible = false;
myCurve.Symbol.Fill = new Fill(color);
}
// Fill the background of the chart rect and pane
//myPane.Chart.Fill = new Fill(Color.White, Color.LightGoldenrodYellow, 45.0f);
//myPane.Fill = new Fill(Color.White, Color.SlateGray, 45.0f);
myPane.Fill = new Fill(Color.WhiteSmoke);
zgc.AxisChange();
zgc.Invalidate();
}
public void CreateComponentDistributionGraph(ZedGraphControl zgc)
{
ColorSequenceCollection sequence = new ColorSequenceCollection();
GraphPane myPane = zgc.GraphPane;
myPane.CurveList.Clear();
// Set the GraphPane title
myPane.Title.Text = "Component Proportion";
myPane.Title.FontSpec.Size = 24f;
myPane.Title.FontSpec.Family = "Tahoma";
// Fill the pane background with a color gradient
// myPane.Fill = new Fill(Color.White, Color.WhiteSmoke, 45.0f);
// No fill for the chart background
myPane.Chart.Fill.Type = FillType.None;
myPane.Legend.IsVisible = false;
// Add some pie slices
for (int i = 0; i < pca.Components.Count; i++)
{
myPane.AddPieSlice(pca.Components[i].Proportion,
sequence[i], 0.1, pca.Components[i].Index.ToString());
}
myPane.XAxis.Scale.MinAuto = true;
myPane.XAxis.Scale.MaxAuto = true;
myPane.YAxis.Scale.MinAuto = true;
myPane.YAxis.Scale.MaxAuto = true;
myPane.XAxis.Scale.MagAuto = true;
myPane.YAxis.Scale.MagAuto = true;
// Calculate the Axis Scale Ranges
zgc.AxisChange();
zgc.Invalidate();
}
private void CreateBarGraph(double[] weights, string[] featureNames)
{
var zgc = graphSupportVectors;
GraphPane myPane = zgc.GraphPane;
myPane.CurveList.Clear();
// Set the titles
myPane.Title.IsVisible = false;
myPane.XAxis.Title.Text = "Weight importance";
myPane.YAxis.Title.Text = "Features";
var colors = new ColorSequenceCollection();
for (int i = 0; i < featureNames.Length; i++)
{
myPane.AddBar(featureNames[i], new double[] { i }, new[] { weights[i] }, colors[i]);
}
myPane.Fill = new Fill(Color.WhiteSmoke);
zgc.AxisChange();
zgc.Invalidate();
}
/// <summary>
/// Forces a update of the scatter plot.
/// </summary>
///
public void UpdateGraph()
{
zedGraphControl.GraphPane.Title.Text = scatterplot.Title;
zedGraphControl.GraphPane.XAxis.Title.Text = Scatterplot.XAxisTitle;
zedGraphControl.GraphPane.YAxis.Title.Text = Scatterplot.YAxisTitle;
classes.Clear();
if (scatterplot.Classes != null)
{
if (scatterplot.Classes.Count == 0)
{
zedGraphControl.GraphPane.Legend.IsVisible = false;
// Create space for unlabelled data
PointPairList list = new PointPairList(scatterplot.XAxis, scatterplot.YAxis);
LineItem item = new LineItem(String.Empty, list, Color.Black, SymbolType.Default);
item.Line.IsVisible = LinesVisible;
item.Symbol.Border.IsVisible = false;
item.Symbol.Fill = new Fill(Color.Black);
if (SymbolSize == 0)
item.Symbol.IsVisible = false;
else item.Symbol.Size = SymbolSize;
classes.Add(item);
}
else
{
zedGraphControl.GraphPane.Legend.IsVisible = true;
var colors = new ColorSequenceCollection(scatterplot.Classes.Count);
// Create a curve item for each of the labels
for (int i = 0; i < scatterplot.Classes.Count; i++)
{
// retrieve the x,y pairs for the label
double[] x = scatterplot.Classes[i].XAxis;
double[] y = scatterplot.Classes[i].YAxis;
PointPairList list = new PointPairList(x, y);
LineItem item = new LineItem(scatterplot.Classes[i].Text,
list, colors[i], SymbolType.Default);
item.Line.IsVisible = LinesVisible;
item.Symbol.Border.IsVisible = false;
item.Symbol.Fill = new Fill(colors[i]);
if (SymbolSize == 0)
item.Symbol.IsVisible = false;
else item.Symbol.Size = SymbolSize;
classes.Add(item);
}
}
zedGraphControl.AxisChange();
zedGraphControl.Invalidate();
if (!ScaleTight)
zedGraphControl.ZoomPane(zedGraphControl.GraphPane, 1.1, PointF.Empty, false);
else zedGraphControl.RestoreScale(zedGraphControl.GraphPane);
}
}
public void CreateComponentDistributionGraph(ZedGraphControl zgc)
{
ColorSequenceCollection sequence = new ColorSequenceCollection();
GraphPane myPane = zgc.GraphPane;
myPane.CurveList.Clear();
// Set the GraphPane title
myPane.Title.Text = "Component Proportion";
myPane.Title.FontSpec.Size = 24f;
myPane.Title.FontSpec.Family = "Tahoma";
// Fill the pane background with a color gradient
// myPane.Fill = new Fill(Color.White, Color.WhiteSmoke, 45.0f);
// No fill for the chart background
myPane.Chart.Fill.Type = FillType.None;
myPane.Legend.IsVisible = false;
// Add some pie slices
for (int i = 0; i < pca.Components.Count; i++)
{
myPane.AddPieSlice(pca.Components[i].Proportion,
sequence[i], 0.1, pca.Components[i].Index.ToString());
}
myPane.XAxis.Scale.MinAuto = true;
myPane.XAxis.Scale.MaxAuto = true;
myPane.YAxis.Scale.MinAuto = true;
myPane.YAxis.Scale.MaxAuto = true;
myPane.XAxis.Scale.MagAuto = true;
myPane.YAxis.Scale.MagAuto = true;
// Calculate the Axis Scale Ranges
zgc.AxisChange();
zgc.Invalidate();
}
private static DataSeriesBox show(String title, double[][] series, bool hold)
{
DataSeriesBox form = null;
Thread formThread = null;
AutoResetEvent stopWaitHandle = new AutoResetEvent(false);
formThread = new Thread(() =>
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
// Show control in a form
form = new DataSeriesBox();
form.Text = title;
form.formThread = formThread;
var sequence = new ColorSequenceCollection(series.Length);
for (int i = 0; i < series.Length; i++)
{
form.series.Add(new LineItem(i.ToString(), Matrix.Indices(0, series[i].Length).ToDouble(),
series[i], sequence.GetColor(i), SymbolType.None));
}
form.zedGraphControl.GraphPane.AxisChange();
stopWaitHandle.Set();
Application.Run(form);
});
formThread.SetApartmentState(ApartmentState.STA);
formThread.Start();
stopWaitHandle.WaitOne();
if (!hold)
formThread.Join();
return form;
}
private static WavechartBox show(String title, bool hold, params Tuple<Signal, int>[] series)
{
WavechartBox form = null;
Thread formThread = null;
AutoResetEvent stopWaitHandle = new AutoResetEvent(false);
formThread = new Thread(() =>
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
// Show control in a form
form = new WavechartBox();
form.Text = title;
form.formThread = formThread;
if (!String.IsNullOrEmpty(title))
{
form.zedGraphControl.GraphPane.Title.IsVisible = true;
form.zedGraphControl.GraphPane.Title.Text = title;
}
var sequence = new ColorSequenceCollection(series.Length);
for (int i = 0; i < series.Length; i++)
{
var signal = series[i].Item1;
int channel = series[i].Item2;
ComplexSignal complex = signal as ComplexSignal;
if (complex != null && complex.Status != ComplexSignalStatus.Normal)
{
double[] spectrum = Accord.Audio.Tools
.GetPowerSpectrum(complex.GetChannel(channel));
double[] frequencies = Accord.Audio.Tools.GetFrequencyVector(signal.Length, signal.SampleRate);
form.series.Add(new LineItem(i.ToString(), frequencies,
spectrum, sequence.GetColor(i), SymbolType.None));
form.zedGraphControl.GraphPane.XAxis.Title.Text = "Frequency";
form.zedGraphControl.GraphPane.YAxis.Title.Text = "Power";
}
else
{
double[] values;
if (signal.Channels == 1)
{
values = signal.ToDouble();
}
else
{
ExtractChannel extract = new ExtractChannel(channel);
values = extract.Apply(signal).ToDouble();
}
form.series.Add(new LineItem(i.ToString(), Matrix.Indices(0, signal.Length).ToDouble(),
values, sequence.GetColor(i), SymbolType.None));
form.zedGraphControl.GraphPane.XAxis.Title.Text = "Time";
form.zedGraphControl.GraphPane.YAxis.Title.Text = "Amplitude";
}
}
form.zedGraphControl.GraphPane.AxisChange();
stopWaitHandle.Set();
Application.Run(form);
});
formThread.SetApartmentState(ApartmentState.STA);
formThread.Start();
stopWaitHandle.WaitOne();
if (!hold)
formThread.Join();
return form;
}
/// <summary>
/// Constructs a new instance of the ScatterplotView.
/// </summary>
///
public ComponentView()
{
InitializeComponent();
zedGraphControl.GraphPane.Title.Text = "Components";
zedGraphControl.GraphPane.Title.FontSpec.Size = 24f;
zedGraphControl.GraphPane.Title.FontSpec.Family = "Tahoma";
zedGraphControl.GraphPane.XAxis.Title.Text = "Components";
zedGraphControl.GraphPane.YAxis.Title.Text = "Percentage";
zedGraphControl.BorderStyle = System.Windows.Forms.BorderStyle.None;
zedGraphControl.GraphPane.Border.IsVisible = false;
zedGraphControl.GraphPane.Border.Color = Color.White;
zedGraphControl.GraphPane.Border.Width = 0;
zedGraphControl.GraphPane.Fill = new Fill(Color.White);
zedGraphControl.GraphPane.Chart.Fill = new Fill(Color.GhostWhite);
zedGraphControl.GraphPane.Legend.IsVisible = false;
zedGraphControl.GraphPane.Legend.Position = LegendPos.Right;
zedGraphControl.GraphPane.Legend.IsShowLegendSymbols = false;
zedGraphControl.GraphPane.XAxis.Scale.MinAuto = true;
zedGraphControl.GraphPane.XAxis.Scale.MaxAuto = true;
zedGraphControl.GraphPane.YAxis.Scale.MinAuto = true;
zedGraphControl.GraphPane.YAxis.Scale.MaxAuto = true;
zedGraphControl.GraphPane.XAxis.Scale.MagAuto = true;
zedGraphControl.GraphPane.YAxis.Scale.MagAuto = true;
zedGraphControl.GraphPane.Chart.Fill.Type = FillType.None;
zedGraphControl.GraphPane.Legend.IsVisible = false;
zedGraphControl.GraphPane.Title.FontSpec.Size = 24f;
zedGraphControl.GraphPane.Title.FontSpec.Family = "Tahoma";
colors = new ColorSequenceCollection();
}
private void CreateBarGraph(double[] weights, string[] featureNames)
{
var zgc = graphSupportVectors;
GraphPane myPane = zgc.GraphPane;
myPane.CurveList.Clear();
// Set the titles
myPane.Title.IsVisible = false;
myPane.XAxis.Title.Text = "Weight importance";
myPane.YAxis.Title.Text = "Features";
var colors = new ColorSequenceCollection();
for (int i = 0; i < featureNames.Length; i++)
myPane.AddBar(featureNames[i], new double[] { i }, new[] { weights[i] }, colors[i]);
myPane.Fill = new Fill(Color.WhiteSmoke);
zgc.AxisChange();
zgc.Invalidate();
}
private static DataSeriesBox show(String title, double[] x, double[][] series,
bool time = false)
{
DataSeriesBox form = null;
Thread formThread = null;
if (title == null)
title = "Time series";
x = (double[])x.Clone();
var idx = Matrix.Indices(0, x.Length);
Array.Sort(x, idx);
for (int i = 0; i < series.Length; i++)
series[i] = series[i].Submatrix(idx);
AutoResetEvent stopWaitHandle = new AutoResetEvent(false);
formThread = new Thread(() =>
{
Accord.Controls.Tools.ConfigureWindowsFormsApplication();
// Show control in a form
form = new DataSeriesBox();
form.Text = title;
form.formThread = formThread;
var pane = form.zedGraphControl.GraphPane;
if (time)
{
pane.XAxis.Type = AxisType.Date;
pane.XAxis.Scale.MajorUnit = DateUnit.Hour;
pane.XAxis.Scale.Format = "T";
}
var sequence = new ColorSequenceCollection(series.Length);
for (int i = 0; i < series.Length; i++)
{
if (x == null)
x = Matrix.Indices(0, series[i].Length).ToDouble();
var lineItem = new LineItem(i.ToString(), x,
series[i], sequence.GetColor(i), SymbolType.None);
form.series.Add(lineItem);
}
pane.Title.Text = title;
pane.AxisChange();
stopWaitHandle.Set();
Application.Run(form);
});
formThread.SetApartmentState(ApartmentState.STA);
formThread.Start();
stopWaitHandle.WaitOne();
return form;
}
private static DataBarBox show(string title, string[] labels, double[][] series)
{
DataBarBox form = null;
Thread formThread = null;
if (title == null)
title = "Bar chart";
double[] x = Matrix.Indices(0, labels.Length).ToDouble();
AutoResetEvent stopWaitHandle = new AutoResetEvent(false);
formThread = new Thread(() =>
{
Accord.Controls.Tools.ConfigureWindowsFormsApplication();
// Show control in a form
form = new DataBarBox();
form.Text = title;
form.formThread = formThread;
var sequence = new ColorSequenceCollection(series.Length);
for (int i = 0; i < series.Length; i++)
{
form.series.Add(new BarItem(i.ToString(), x,
series[i], sequence.GetColor(i)));
}
form.zedGraphControl.GraphPane.Title.Text = title;
form.zedGraphControl.GraphPane.XAxis.Type = AxisType.Text;
form.zedGraphControl.GraphPane.XAxis.Scale.TextLabels = labels;
form.zedGraphControl.GraphPane.XAxis.Scale.MajorStep = 1;
form.zedGraphControl.GraphPane.AxisChange();
stopWaitHandle.Set();
Application.Run(form);
});
formThread.SetApartmentState(ApartmentState.STA);
formThread.Start();
stopWaitHandle.WaitOne();
return form;
}
/// <summary>
/// Forces a update of the scatter plot.
/// </summary>
///
public void UpdateGraph()
{
classes.Clear();
if (scatterplot.LabelAxis == null)
{
// Create space for unlabelled data
PointPairList unlabelled = new PointPairList(scatterplot.XAxis, scatterplot.YAxis);
LineItem item = new LineItem(String.Empty, unlabelled, Color.Black, SymbolType.Diamond);
item.Line.IsVisible = false;
item.Symbol.Border.IsVisible = false;
item.Symbol.Fill = new Fill(Color.Black);
classes.Add(item);
}
else
{
ColorSequenceCollection colors = new ColorSequenceCollection(scatterplot.Classes.Count);
// Create a curve item for each of the labels
for (int i = 0; i < scatterplot.Classes.Count; i++)
{
// retrieve the x,y pairs for the label
double[] x = scatterplot.Classes[i].XAxis;
double[] y = scatterplot.Classes[i].YAxis;
PointPairList list = new PointPairList(x, y);
LineItem item = new LineItem(String.Empty, list, colors[i], SymbolType.Diamond);
item.Line.IsVisible = false;
item.Symbol.Border.IsVisible = false;
item.Symbol.Fill = new Fill(colors[i]);
classes.Add(item);
}
zedGraphControl.AxisChange();
zedGraphControl.Invalidate();
}
}
public void CreateScatterplot(ZedGraphControl zgc, double[,] graph)
{
GraphPane myPane = zgc.GraphPane;
myPane.CurveList.Clear();
// Set the titles
myPane.Title.IsVisible = false;
myPane.XAxis.Title.Text = columnNames[0];
myPane.YAxis.Title.Text = columnNames[1];
// Classification problem
var lists = new Dictionary<double, PointPairList>();
var unique = graph.GetColumn(2).Distinct();
foreach (var u in unique)
lists[u] = new PointPairList();
for (int i = 0; i < graph.GetLength(0); i++)
lists[graph[i, 2]].Add(graph[i, 0], graph[i, 1]);
var seq = new ColorSequenceCollection();
// Add the curve
for (int i = 0; i < unique.Length; i++)
{
var color = seq.GetColor(i);
LineItem myCurve = myPane.AddCurve("G" + i,
lists[unique[i]], color,
SymbolType.Diamond);
myCurve.Line.IsVisible = false;
myCurve.Symbol.Border.IsVisible = false;
myCurve.Symbol.Fill = new Fill(color);
}
// Fill the background of the chart rect and pane
//myPane.Chart.Fill = new Fill(Color.White, Color.LightGoldenrodYellow, 45.0f);
//myPane.Fill = new Fill(Color.White, Color.SlateGray, 45.0f);
myPane.Fill = new Fill(Color.WhiteSmoke);
zgc.AxisChange();
zgc.Invalidate();
}
