private void UpdateTheme()
{
// If there was no theme attached to the layer yet, generate a default theme
if (featureCoverage == null || featureCoverage.Features == null || featureCoverage.Features.Count == 0)
{
return;
}
Style.GeometryType = GetFeatureGeometryType(featureCoverage.Features[0] as IFeature);
// Values to base the theme on
//List<IVariableFilter> filters = new List<IVariableFilter>();
if (Coverage.Time != null)
{
if (CurrentTime == null && Coverage.Time.Values.Count != 0)
{
CurrentTime = Coverage.Time.Values[0];
}
//filters.Add(new VariableValueFilter(featureCoverage.Time, CurrentTime));
}
IMultiDimensionalArray <double> values = featureCoverage.GetValues <double>();
if (null == values)
{
return;
}
// NOTE: we're getting all values here!
var featureValues = new List <double>(values.Where(v => !double.IsNaN(v)));
if (0 == featureValues.Count)
{
log.Error("Unable to generate default theme; no values available");
return;
//throw new ArgumentException();
}
featureValues.Sort();
double minValue = featureValues.Min();
double maxValue = featureValues.Max();
if (minValue == maxValue)
{
// Only a single value, so no gradient theme needed/wanted: create a 'blue' single feature theme
Theme = ThemeFactory.CreateSingleFeatureTheme(Style.GeometryType, Color.Blue, 10);
}
else
{
// Create 'green to blue' gradient theme
Theme = ThemeFactory.CreateGradientTheme(Coverage.Components[0].Name, Style,
new ColorBlend(new Color[] { Color.Green, Color.Blue },
new float[] { 0f, 1f }),
(float)minValue, (float)maxValue, 1, 1, false, true);
}
}
private void UpdateTheme()
{
// If there was no theme attached to the layer yet, generate a default theme
if (featureCoverage == null || featureCoverage.Features == null || featureCoverage.Features.Count == 0)
{
return;
}
Style.GeometryType = GetFeatureGeometryType(featureCoverage.Features[0]);
// Values to base the theme on
if (Coverage.Time != null)
{
if (CurrentTime == null && Coverage.Time.Values.Count != 0)
{
CurrentTime = Coverage.Time.Values[0];
}
}
IMultiDimensionalArray <double> values = featureCoverage.GetValues <double>();
if (null == values)
{
return;
}
// NOTE: we're getting all values here!
var featureValues = new List <double>(values.Where(v => !double.IsNaN(v) && !double.IsInfinity(v)));
if (0 == featureValues.Count)
{
Log.Error("Unable to generate default theme; no values available");
return;
}
featureValues.Sort();
double minValue = featureValues.Min();
double maxValue = featureValues.Max();
if (base.Theme == null)
{
// Create default Theme
if (minValue == maxValue)
{
// Only a single value, so no gradient theme needed/wanted: create a 'blue' single feature theme
Theme = ThemeFactory.CreateSingleFeatureTheme(Style.GeometryType, Color.Blue, 10);
}
else
{
// Create 'green to blue' gradient theme
Theme = ThemeFactory.CreateGradientTheme(Coverage.Components[0].Name, Style,
new ColorBlend(new[] { Color.Green, Color.Blue },
new[] { 0f, 1f }),
(float)minValue, (float)maxValue, 1, 1, false, true);
}
}
else
{
if (AutoUpdateThemeOnDataSourceChanged)
{
Theme.ScaleTo(minValue, maxValue);
}
}
}
