private void Draw()
{
byte[][] defaultColourScheme;
int nClassesValue = 3;
string colourSchemeComboBoxSelection = colourSchemeComboBox.SelectedValue.ToString();
if (!_datasetModel.IsColourQualitative)
{
ComboBoxItem nClassesComboBoxSelection = (ComboBoxItem)numDataClassesComboBox.SelectedValue;
nClassesValue = int.Parse(nClassesComboBoxSelection.Content.ToString());
defaultColourScheme = _colourScheme.GetRGBColours(colourSchemeComboBoxSelection, nClassesValue);
}
else
{
nClassesValue = _distinctCategories.Count();
defaultColourScheme = _colourScheme.GetRGBColours(colourSchemeComboBoxSelection, nClassesValue);
}
foreach (TreemapRow row in _rows)
{
foreach (TreemapNode node in row.Nodes)
{
Canvas.SetLeft(node, node.XPos);
Canvas.SetTop(node, node.YPos);
canvas.Children.Add(node);
if (_datasetModel.IsColourQualitative)
{
int index = _distinctCategories.IndexOf(node.ColourValue);
node.Colour = defaultColourScheme[index];
}
else
{
double colourValue = double.Parse(node.ColourValue);
double linearTransform = (colourValue - _datasetModel.ColourMinMax[0]) /
(_datasetModel.ColourMinMax[1] - _datasetModel.ColourMinMax[0]) * (nClassesValue - 1);
int colourIndex = (int)Math.Truncate(linearTransform);
node.Colour = defaultColourScheme[colourIndex];
}
}
}
// Assign event handlers at the end so events are not fired during initialisation
numDataClassesComboBox.SelectionChanged += numDataClassesComboBox_SelectionChanged;
colourSchemeTypeComboBox.SelectionChanged += colourSchemeTypeComboBox_SelectionChanged;
colourSchemeComboBox.SelectionChanged += colourSchemeComboBox_SelectionChanged;
}
private void Draw()
{
_dataGrid.CollectionChanged -= dataGrid_CollectionChanged;
_dataGrid.Clear();
// get colour scheme values from combobox selections
ComboBoxItem nDataClassesSelection = numDataClassesComboBox.SelectedItem as ComboBoxItem;
int nDataClasses = int.Parse(nDataClassesSelection.Content.ToString());
byte[][] defaultColourScheme = _colourScheme.GetRGBColours(colourSchemeComboBox.SelectedItem.ToString(), nDataClasses);
for (int i = 0; i < _datasetModel.Dataset.Count; i++)
{
string[] row = _datasetModel.Dataset[i];
ListViewItem item = BuildRowStructure(_cellWidth, row[_idIndex]);
Grid rowGrid = item.Content as Grid;
for (int j = 0; j < this.Columns.Length; j++)
{
int currentColumn = _columnIndexes[j];
string columnTitle = _datasetModel.ColumnHeadings[currentColumn];
// get max and min for the column
double[] minMax = _datasetModel.GetAxisMinMaxValues(columnTitle);
double min = minMax[0];
double max = minMax[1];
double cellValue = double.Parse(row[currentColumn]);
double linearTransform = (cellValue - min) / (max - min) * (nDataClasses - 1);
int colourIndex = (int)Math.Truncate(linearTransform);
byte[] colourRGB = defaultColourScheme[colourIndex];
Rectangle cell = new Rectangle();
cell.Stroke = new SolidColorBrush(Colors.LightGray);
cell.StrokeThickness = 1;
cell.Fill = new SolidColorBrush(Color.FromArgb(255, colourRGB[0], colourRGB[1], colourRGB[2]));
ToolTip tt = new ToolTip();
tt.Content = row[currentColumn];
tt.Placement = Windows.UI.Xaml.Controls.Primitives.PlacementMode.Mouse;
ToolTipService.SetToolTip(cell, tt);
rowGrid.Children.Add(cell);
// add to column + 1 to account for the row title
Grid.SetColumn(cell, j + 1);
}
_dataGrid.Add(item);
}
_dataGrid.CollectionChanged += dataGrid_CollectionChanged;
dataListView.ItemsSource = _dataGrid;
// check for filtered items
if (_filteredItems.Count > 0)
{
Filter();
}
}
private async void CreateBubbles()
{
StringBuilder sb = new StringBuilder();
byte[][] colourSchemeArray;
int nClassesValue = 3;
string colourSchemeComboBoxSelection = colourSchemeComboBox.SelectedValue.ToString();
if (!_datasetModel.IsColourQualitative)
{
ComboBoxItem nClassesComboBoxSelection = (ComboBoxItem)numDataClassesComboBox.SelectedValue;
nClassesValue = int.Parse(nClassesComboBoxSelection.Content.ToString());
colourSchemeArray = _colourScheme.GetRGBColours(colourSchemeComboBoxSelection, nClassesValue);
}
else
{
nClassesValue = _distinctCategories.Count();
colourSchemeArray = _colourScheme.GetRGBColours(colourSchemeComboBoxSelection, nClassesValue);
}
for (int i = 0; i < _datasetModel.Dataset.Count; i++)
{
string[] row = _datasetModel.Dataset[i];
BubblePushpin bubble = new BubblePushpin();
bubble.OriginalBubbleSize = double.Parse(row[_symbolSizeIndex]);
bubble.BubbleSize = bubble.OriginalBubbleSize;
bubble.ColourValue = row[_symbolColourIndex];
// use StringBuilder to create the tooltip details
sb.AppendLine(row[_placeNameIndex]);
sb.Append(_datasetModel.ColumnHeadings[_symbolSizeIndex]);
sb.Append(": ");
sb.AppendLine(row[_symbolSizeIndex]);
sb.Append(_datasetModel.ColumnHeadings[_symbolColourIndex]);
sb.Append(": ");
sb.Append(row[_symbolColourIndex]);
if (!String.IsNullOrEmpty(this.Description))
{
sb.Append(": ");
sb.Append(row[_descriptionIndex]);
}
bubble.Details = sb.ToString();
// plot symbols on map - if lat/lon not set then geocode the place name
if (String.IsNullOrEmpty(this.Latitude) || String.IsNullOrEmpty(this.Longitude) ||
String.IsNullOrEmpty(row[_latitideIndex]) || String.IsNullOrEmpty(row[_longitudeIndex]))
{
Bing.Maps.Location geocodedLocation = await GeocodePlaceName(row[_placeNameIndex]);
bubble.LatLon = geocodedLocation;
}
else
{
double latitude = 0.0;
double longitude = 0.0;
if (!double.TryParse(row[_latitideIndex], out latitude) ||
!double.TryParse(row[_longitudeIndex], out longitude))
{
await new MessageDialog("Cannot parse latitude/longitude for " + row[_placeNameIndex],
"Error parsing dataset").ShowAsync();
}
bubble.LatLon = new Bing.Maps.Location(latitude, longitude);
}
// Apply colour
if (_datasetModel.IsColourQualitative)
{
int index = _distinctCategories.IndexOf(row[_symbolColourIndex]);
bubble.Colour = colourSchemeArray[index];
}
else
{
double colourValue = double.Parse(row[_symbolColourIndex]);
double linearTransform = (colourValue - _datasetModel.ColourMinMax[0]) /
(_datasetModel.ColourMinMax[1] - _datasetModel.ColourMinMax[0]) * (nClassesValue - 1);
int colourIndex = (int)Math.Truncate(linearTransform);
bubble.Colour = colourSchemeArray[colourIndex];
}
_bubblePushpins.Add(bubble);
sb.Clear();
}
Draw();
}
private void Draw()
{
StringBuilder sb = new StringBuilder();
byte[][] defaultColourScheme;
int nClassesValue = 3;
string colourSchemeComboBoxSelection = colourSchemeComboBox.SelectedValue.ToString();
if (!_datasetModel.IsColourQualitative)
{
ComboBoxItem nClassesComboBoxSelection = (ComboBoxItem)numDataClassesComboBox.SelectedValue;
nClassesValue = int.Parse(nClassesComboBoxSelection.Content.ToString());
defaultColourScheme = _colourScheme.GetRGBColours(colourSchemeComboBoxSelection, nClassesValue);
}
else
{
_distinctCategories = _datasetModel.Dataset.Select(o => o[_colourValueIndex]).Distinct().ToList();
nClassesValue = _distinctCategories.Count();
defaultColourScheme = _colourScheme.GetRGBColours(colourSchemeComboBoxSelection, nClassesValue);
}
foreach (string[] row in _datasetModel.Dataset)
{
ParallelCoordsPolyline line = new ParallelCoordsPolyline();
line.ColourValue = row[_colourValueIndex];
sb.AppendLine(row[_idIndex]);
// Apply line colour
if (_datasetModel.IsColourQualitative)
{
int index = _distinctCategories.IndexOf(row[_colourValueIndex]);
line.LineColour = defaultColourScheme[index];
}
else
{
double colourValue = double.Parse(row[_colourValueIndex]);
double linearTransform = (colourValue - _datasetModel.ColourMinMax[0]) /
(_datasetModel.ColourMinMax[1] - _datasetModel.ColourMinMax[0]) * (nClassesValue - 1);
int colourIndex = (int)Math.Truncate(linearTransform);
line.LineColour = defaultColourScheme[colourIndex];
}
PointCollection points = new PointCollection();
double[] dataValues = new double[_axesIndexes.Length];
for (int i = 0; i < _axesIndexes.Length; i++)
{
// get value for the axis
double val = double.Parse(row[_axesIndexes[i]]);
dataValues[i] = val;
// get max/min values for the axis
string axisTitle = _datasetModel.ColumnHeadings[_axesIndexes[i]];
double[] minMax = _datasetModel.GetAxisMinMaxValues(axisTitle);
// get normalised value (between 0 and 1) and multiply
// by screen height to convert it into a screen coordinate
double yCoord = NormaliseValue(val, minMax[1], minMax[0]) * _canvasHeight;
double xCoord = _xSeparation * i;
points.Add(new Point(xCoord, yCoord));
sb.Append(_datasetModel.ColumnHeadings[_axesIndexes[i]]);
sb.Append(": ");
sb.AppendLine(val.ToString());
}
// colour value tooltip text
// check to see if the colour value is already an axis
if (Array.IndexOf(this.Axes, this.ColourValue) < 0)
{
// colour value is not an axis, add to the tooltip text
sb.Append(_datasetModel.ColumnHeadings[_colourValueIndex]);
sb.Append(": ");
sb.Append(row[_colourValueIndex]);
}
line.Details = sb.ToString();
sb.Clear();
line.PolylinePoints = points;
line.DataValues = dataValues;
_polylines.Add(line);
canvas.Children.Add(line);
}
// Assign event handlers at the end so events are not fired during initialisation
numDataClassesComboBox.SelectionChanged += numDataClassesComboBox_SelectionChanged;
colourSchemeTypeComboBox.SelectionChanged += colourSchemeTypeComboBox_SelectionChanged;
colourSchemeComboBox.SelectionChanged += colourSchemeComboBox_SelectionChanged;
}