// Resize symbols slider value changed event handler
private void symbolSizeSlider_ValueChanged(object sender, Windows.UI.Xaml.Controls.Primitives.RangeBaseValueChangedEventArgs e)
{
foreach (UIElement element in map.Children)
{
if (element is BubblePushpin)
{
BubblePushpin bp = element as BubblePushpin;
if (e.NewValue == 0.0)
{
// revert back to original sizes
bp.BubbleSize = bp.OriginalBubbleSize;
}
else
{
if (e.NewValue < e.OldValue)
{
// shrinking bubbles so we divide to get the new size
// convert negative values to positive values to prevent
// the subsequent area calculations from breaking
if (e.NewValue < 0.0)
{
bp.BubbleSize = bp.BubbleSize / (e.NewValue * -1.0);
}
else
{
bp.BubbleSize = bp.BubbleSize / e.NewValue;
}
}
else
{
// growing bubbles - multiply
bp.BubbleSize = bp.BubbleSize * e.NewValue;
}
}
}
}
}
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 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();
}
