using System; using System.Windows.Forms; using HeuristicLab.Analysis; using HeuristicLab.MainForm; using HeuristicLab.Core.Views; using System.Collections.Generic; using HeuristicLab.DataPreprocessing.Implementations; using System.Drawing; using System.Windows.Forms.DataVisualization.Charting; namespace HeuristicLab.DataPreprocessing.Views { [View("Histogram View")] [Content(typeof(DataCompletenessChartContent), true)] public partial class DataCompletenessView : ItemView { //list of columns, bool indicates wether the cell is a missing value or not private List> matrix = new List>(); //series colors private static Color colorNonMissingVal = Color.CornflowerBlue; private static Color colorMissingVal = Color.Orange; public new DataCompletenessChartContent Content { get { return (DataCompletenessChartContent)base.Content; } set { base.Content = value; } } public DataCompletenessView() { InitializeComponent(); } protected override void OnContentChanged() { base.OnContentChanged(); if (Content != null) { InitData(); } } private void InitData() { IDictionary> missingValueIndices = Content.SearchLogic.GetMissingValueIndices(); for (int i = 0; i < Content.SearchLogic.Columns; i++) { //append column List column = new List(); for (int j = 0; j < Content.SearchLogic.Rows; j++) { column.Add(missingValueIndices[i].Contains(j)); } matrix.Add(column); } List> yValuesPerColumn = ProcessMatrixForCharting(matrix, missingValueIndices); PrepareChart(); CreateSeries(yValuesPerColumn); } private void PrepareChart() { chart.Titles.Add("DataCompletenessChart"); chart.EnableDoubleClickResetsZoom = true; chart.ChartAreas[0].AxisX.MajorGrid.LineWidth = 0; chart.ChartAreas[0].AxisY.MajorGrid.LineWidth = 0; chart.ChartAreas[0].AxisX.IsMarginVisible = false; chart.ChartAreas[0].AxisY.IsMarginVisible = false; chart.ChartAreas[0].CursorX.IsUserEnabled = true; chart.ChartAreas[0].CursorX.IsUserSelectionEnabled = true; chart.ChartAreas[0].CursorY.IsUserEnabled = true; chart.ChartAreas[0].CursorY.IsUserSelectionEnabled = true; //custom x axis label double from = 0.5; foreach (String columnName in Content.SearchLogic.VariableNames) { double to = from + 1; chart.ChartAreas[0].AxisX.CustomLabels.Add(from, to, columnName); from = to; } //custom y axis label chart.ChartAreas[0].AxisY.IsReversed = true; } private void CreateSeries(List> yValuesPerColumn) { //prepare series int seriesCount = DetermineSeriesCount(yValuesPerColumn); for (int i = 0; i < seriesCount; i++) { chart.Series.Add(CreateSeriesName(i)); Series series = chart.Series[CreateSeriesName(i)]; series.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.StackedColumn; series.IsVisibleInLegend = false; series["PointWidth"] = "1.0"; if (i % 2 == 0) { if (i == 0) //show legend for non missing values only once series.IsVisibleInLegend = true; series.Color = colorNonMissingVal; } else { if (i == 1) //show legend for missing values only once series.IsVisibleInLegend = true; series.Color = colorMissingVal; } } //fill series for (int i = 0; i < yValuesPerColumn.Count; i++) { List column = yValuesPerColumn[i]; for (int j = 0; j < seriesCount; j++) { if (column.Count - 1 < j) { chart.Series[CreateSeriesName(j)].Points.AddY(0); } else { chart.Series[CreateSeriesName(j)].Points.AddY(column[j]); } } } } private String CreateSeriesName(int index) { if (index == 0) return "non-missing value"; else if (index == 1) return "missing value"; return "series" + index; } #region data_preparation_for_chartseries private int DetermineSeriesCount(List> yValuesPerColumn) { int highest = 0; foreach (List values in yValuesPerColumn) { highest = Math.Max(values.Count, highest); } return highest; } private List> ProcessMatrixForCharting(List> matrix, IDictionary> missingValueIndices) { List> columnsYValues = new List>(); for (int i=0; i < matrix.Count; i++) //column { List yValues = new List(); List column = matrix[i]; bool missingState = false; int valueCount = 0; for (int j = 0; j < column.Count; j++ ) { if (missingState == missingValueIndices[i].Contains(j)) { valueCount++; } else { yValues.Add(valueCount); valueCount = 1; missingState = !missingState; } } yValues.Add(valueCount); if (missingState) //handle last missing { yValues.Add(0); } //yValues.Reverse(); columnsYValues.Add(yValues); } return columnsYValues; } #endregion } }