private async void OnUpdateRendererClicked(object sender, RoutedEventArgs e)
{
// Convert the text to doubles and return if they're invalid.
double input1;
double input2;
try
{
input1 = Convert.ToDouble(FirstParameterInput.Text);
input2 = Convert.ToDouble(SecondParameterInput.Text);
}
catch (Exception ex)
{
await new MessageDialog(ex.Message).ShowAsync();
return;
}
// Get the user choice for the raster stretch render
string myRendererTypeChoice = RendererTypes.SelectedValue.ToString();
// Create an IEnumerable from an empty list of doubles for the gamma values in the stretch render
IEnumerable <double> myGammaValues = new List <double>();
// Create a color ramp for the stretch renderer
ColorRamp myColorRamp = ColorRamp.Create(PresetColorRampType.DemLight, 1000);
// Create the place holder for the stretch renderer
StretchRenderer myStretchRenderer = null;
switch (myRendererTypeChoice)
{
case "Min Max":
// This section creates a stretch renderer based on a MinMaxStretchParameters
// TODO: Add you own logic to ensure that accurate min/max stretch values are used
// Create an IEnumerable from a list of double min stretch value doubles
IEnumerable <double> myMinValues = new List <double> {
input1
};
// Create an IEnumerable from a list of double max stretch value doubles
IEnumerable <double> myMaxValues = new List <double> {
input2
};
// Create a new MinMaxStretchParameters based on the user choice for min and max stretch values
MinMaxStretchParameters myMinMaxStretchParameters = new MinMaxStretchParameters(myMinValues, myMaxValues);
// Create the stretch renderer based on the user defined min/max stretch values, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myMinMaxStretchParameters, myGammaValues, true, myColorRamp);
break;
case "Percent Clip":
// This section creates a stretch renderer based on a PercentClipStretchParameters
// TODO: Add you own logic to ensure that accurate min/max percent clip values are used
// Create a new PercentClipStretchParameters based on the user choice for min and max percent clip values
PercentClipStretchParameters myPercentClipStretchParameters = new PercentClipStretchParameters(input1, input2);
// Create the percent clip renderer based on the user defined min/max percent clip values, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myPercentClipStretchParameters, myGammaValues, true, myColorRamp);
break;
case "Standard Deviation":
// This section creates a stretch renderer based on a StandardDeviationStretchParameters
// TODO: Add you own logic to ensure that an accurate standard deviation value is used
// Create a new StandardDeviationStretchParameters based on the user choice for standard deviation value
StandardDeviationStretchParameters myStandardDeviationStretchParameters = new StandardDeviationStretchParameters(input1);
// Create the standard deviation renderer based on the user defined standard deviation value, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myStandardDeviationStretchParameters, myGammaValues, true, myColorRamp);
break;
}
// Get the existing raster layer in the map
RasterLayer myRasterLayer = (RasterLayer)MyMapView.Map.OperationalLayers[0];
// Apply the stretch renderer to the raster layer
myRasterLayer.Renderer = myStretchRenderer;
}
private void UpdateRendererButton_Clicked(object sender, EventArgs e)
{
// This function acquires the user selection of the stretch renderer from the table view
// along with the parameters specified, then a stretch renderer is created and applied to
// the raster layer.
// Convert the input text to doubles and return if they're invalid.
double input1;
double input2;
try
{
input1 = Convert.ToDouble(_inputParameter1.Text);
input2 = Convert.ToDouble(_inputParameter2.Text);
}
catch (Exception ex)
{
new UIAlertView("alert", ex.Message, (IUIAlertViewDelegate)null, "OK", null).Show();
return;
}
// Create an IEnumerable from an empty list of doubles for the gamma values in the stretch render.
IEnumerable <double> gammaValues = new List <double>();
// Create a color ramp for the stretch renderer.
ColorRamp colorRamp = ColorRamp.Create(PresetColorRampType.DemLight, 1000);
// Create the place holder for the stretch renderer.
StretchRenderer stretchRenderer = null;
switch (_rendererTypes.SelectedSegment)
{
case 0:
// This section creates a stretch renderer based on a MinMaxStretchParameters.
// TODO: Add you own logic to ensure that accurate min/max stretch values are used.
try
{
// Create an IEnumerable from a list of double min stretch value doubles.
IEnumerable <double> minValues = new List <double> {
input1
};
// Create an IEnumerable from a list of double max stretch value doubles.
IEnumerable <double> maxValues = new List <double> {
input2
};
// Create a new MinMaxStretchParameters based on the user choice for min and max stretch values.
MinMaxStretchParameters minMaxStretchParameters = new MinMaxStretchParameters(minValues, maxValues);
// Create the stretch renderer based on the user defined min/max stretch values, empty gamma values, statistic estimates, and a predefined color ramp.
stretchRenderer = new StretchRenderer(minMaxStretchParameters, gammaValues, true, colorRamp);
}
catch (ArgumentException)
{
ShowMessage("Error configuring renderer.", "Ensure all values are valid and try again.");
return;
}
break;
case 1:
// This section creates a stretch renderer based on a PercentClipStretchParameters.
// TODO: Add you own logic to ensure that accurate min/max percent clip values are used.
try
{
// Create a new PercentClipStretchParameters based on the user choice for min and max percent clip values.
PercentClipStretchParameters percentClipStretchParameters = new PercentClipStretchParameters(input1, input2);
// Create the percent clip renderer based on the user defined min/max percent clip values, empty gamma values, statistic estimates, and a predefined color ramp.
stretchRenderer = new StretchRenderer(percentClipStretchParameters, gammaValues, true, colorRamp);
}
catch (Exception)
{
ShowMessage("Error configuring renderer.", "Ensure all values are valid and try again.");
return;
}
break;
case 2:
// This section creates a stretch renderer based on a StandardDeviationStretchParameters.
// TODO: Add you own logic to ensure that an accurate standard deviation value is used
try
{
// Create a new StandardDeviationStretchParameters based on the user choice for standard deviation value.
StandardDeviationStretchParameters standardDeviationStretchParameters = new StandardDeviationStretchParameters(input1);
// Create the standard deviation renderer based on the user defined standard deviation value, empty gamma values, statistic estimates, and a predefined color ramp.
stretchRenderer = new StretchRenderer(standardDeviationStretchParameters, gammaValues, true, colorRamp);
}
catch (Exception)
{
ShowMessage("Error configuring renderer.", "Ensure all values are valid and try again.");
return;
}
break;
}
// Get the existing raster layer in the map.
RasterLayer rasterLayer = (RasterLayer)_myMapView.Map.OperationalLayers[0];
// Apply the stretch renderer to the raster layer.
rasterLayer.Renderer = stretchRenderer;
}
private void OnUpdateRendererClicked(object sender, EventArgs e)
{
// Get the user choice for the raster stretch render
string myRendererTypeChoice = RendererTypes.SelectedItem.ToString();
// Create an IEnumerable from an empty list of doubles for the gamma values in the stretch render
IEnumerable <double> myGammaValues = new List <double> {
};
// Create a color ramp for the stretch renderer
ColorRamp myColorRamp = ColorRamp.Create(PresetColorRampType.DemLight, 1000);
// Create the place holder for the stretch renderer
StretchRenderer myStretchRenderer = null;
switch (myRendererTypeChoice)
{
case "Min Max":
// This section creates a stretch renderer based on a MinMaxStretchParameters
// TODO: Add you own logic to ensure that accurate min/max stretch values are used
// Create an IEnumerable from a list of double min stretch value doubles
IEnumerable <double> myMinValues = new List <double> {
Convert.ToDouble(Input_Parameter1.Text)
};
// Create an IEnumerable from a list of double max stretch value doubles
IEnumerable <double> myMaxValues = new List <double> {
Convert.ToDouble(Input_Parameter2.Text)
};
// Create a new MinMaxStretchParameters based on the user choice for min and max stretch values
MinMaxStretchParameters myMinMaxStretchParameters = new MinMaxStretchParameters(myMinValues, myMaxValues);
// Create the stretch renderer based on the user defined min/max stretch values, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new Esri.ArcGISRuntime.Rasters.StretchRenderer(myMinMaxStretchParameters, myGammaValues, true, myColorRamp);
break;
case "Percent Clip":
// This section creates a stretch renderer based on a PercentClipStretchParameters
// TODO: Add you own logic to ensure that accurate min/max percent clip values are used
// Create a new PercentClipStretchParameters based on the user choice for min and max percent clip values
PercentClipStretchParameters myPercentClipStretchParameters = new PercentClipStretchParameters(Convert.ToDouble(Input_Parameter1.Text), Convert.ToDouble(Input_Parameter2.Text));
// Create the percent clip renderer based on the user defined min/max percent clip values, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myPercentClipStretchParameters, myGammaValues, true, myColorRamp);
break;
case "Standard Deviation":
// This section creates a stretch renderer based on a StandardDeviationStretchParameters
// TODO: Add you own logic to ensure that an accurate standard deviation value is used
// Create a new StandardDeviationStretchParameters based on the user choice for standard deviation value
StandardDeviationStretchParameters myStandardDeviationStretchParameters = new StandardDeviationStretchParameters(Convert.ToDouble(Input_Parameter1.Text));
// Create the standard deviation renderer based on the user defined standard deviation value, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myStandardDeviationStretchParameters, myGammaValues, true, myColorRamp);
break;
}
// Get the existing raster layer in the map
RasterLayer myRasterLayer = (RasterLayer)MyMapView.Map.OperationalLayers[0];
// Apply the stretch renderer to the raster layer
myRasterLayer.Renderer = myStretchRenderer;
}
private void OnUpdateRendererClicked(object sender, EventArgs e)
{
// This function acquires the user selection of the stretch renderer from the table view
// along with the parameters specified, then a stretch renderer is created and applied to
// the raster layer
// Get the user choice for the raster stretch render
UITableViewSource myUITableViewSource = _myRenderChoiceType.Source;
TableSource myTableSource = (TableSource)myUITableViewSource;
string myRendererTypeChoice;
if (myTableSource.SelectedValue == null)
{
// If the user does not click on a choice in the table but just clicks the
// button, the selected value will be null so use the initial
// stretch renderer option
myRendererTypeChoice = "Min Max";
}
else
{
// The user clicked on an option in the table and thus the selected value
// will contain a valid choice
myRendererTypeChoice = myTableSource.SelectedValue;
}
// Create an IEnumerable from an empty list of doubles for the gamma values in the stretch render
IEnumerable <double> myGammaValues = new List <double>();
// Create a color ramp for the stretch renderer
ColorRamp myColorRamp = ColorRamp.Create(PresetColorRampType.DemLight, 1000);
// Create the place holder for the stretch renderer
StretchRenderer myStretchRenderer = null;
switch (myRendererTypeChoice)
{
case "Min Max":
// This section creates a stretch renderer based on a MinMaxStretchParameters
// TODO: Add you own logic to ensure that accurate min/max stretch values are used
// Create an IEnumerable from a list of double min stretch value doubles
IEnumerable <double> myMinValues = new List <double> {
Convert.ToDouble(_Input_Parameter1.Text)
};
// Create an IEnumerable from a list of double max stretch value doubles
IEnumerable <double> myMaxValues = new List <double> {
Convert.ToDouble(_Input_Parameter2.Text)
};
// Create a new MinMaxStretchParameters based on the user choice for min and max stretch values
MinMaxStretchParameters myMinMaxStretchParameters = new MinMaxStretchParameters(myMinValues, myMaxValues);
// Create the stretch renderer based on the user defined min/max stretch values, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myMinMaxStretchParameters, myGammaValues, true, myColorRamp);
break;
case "Percent Clip":
// This section creates a stretch renderer based on a PercentClipStretchParameters
// TODO: Add you own logic to ensure that accurate min/max percent clip values are used
// Create a new PercentClipStretchParameters based on the user choice for min and max percent clip values
PercentClipStretchParameters myPercentClipStretchParameters = new PercentClipStretchParameters(Convert.ToDouble(_Input_Parameter1.Text), Convert.ToDouble(_Input_Parameter2.Text));
// Create the percent clip renderer based on the user defined min/max percent clip values, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myPercentClipStretchParameters, myGammaValues, true, myColorRamp);
break;
case "Standard Deviation":
// This section creates a stretch renderer based on a StandardDeviationStretchParameters
// TODO: Add you own logic to ensure that an accurate standard deviation value is used
// Create a new StandardDeviationStretchParameters based on the user choice for standard deviation value
StandardDeviationStretchParameters myStandardDeviationStretchParameters = new StandardDeviationStretchParameters(Convert.ToDouble(_Input_Parameter1.Text));
// Create the standard deviation renderer based on the user defined standard deviation value, empty gamma values, statistic estimates, and a predefined color ramp
myStretchRenderer = new StretchRenderer(myStandardDeviationStretchParameters, myGammaValues, true, myColorRamp);
break;
}
// Get the existing raster layer in the map
RasterLayer myRasterLayer = (RasterLayer)_myMapView.Map.OperationalLayers[0];
// Apply the stretch renderer to the raster layer
myRasterLayer.Renderer = myStretchRenderer;
}
private void ApplyRgbRendererButton_Click(object sender, System.Windows.RoutedEventArgs e)
{
// Create the correct type of StretchParameters with the corresponding user inputs.
StretchParameters stretchParameters = null;
// See which type is selected and apply the corresponding input parameters to create the renderer.
switch (StretchTypeComboBox.SelectedValue.ToString())
{
case "Min Max":
// Read the minimum and maximum values for the red, green, and blue bands.
double minRed = Convert.ToDouble(MinRedComboBox.SelectedValue);
double minGreen = Convert.ToDouble(MinGreenComboBox.SelectedValue);
double minBlue = Convert.ToDouble(MinBlueComboBox.SelectedValue);
double maxRed = Convert.ToDouble(MaxRedComboBox.SelectedValue);
double maxGreen = Convert.ToDouble(MaxGreenComboBox.SelectedValue);
double maxBlue = Convert.ToDouble(MaxBlueComboBox.SelectedValue);
// Create an array of the minimum and maximum values.
double[] minValues = { minRed, minGreen, minBlue };
double[] maxValues = { maxRed, maxGreen, maxBlue };
// Create a new MinMaxStretchParameters with the values.
stretchParameters = new MinMaxStretchParameters(minValues, maxValues);
break;
case "Percent Clip":
// Get the percentile cutoff below which values in the raster dataset are to be clipped.
double minimumPercent = MinimumValueSlider.SelectedIndex;
// Get the percentile cutoff above which pixel values in the raster dataset are to be clipped.
double maximumPercent = MaximumValueSlider.SelectedIndex;
// Create a new PercentClipStretchParameters with the inputs.
stretchParameters = new PercentClipStretchParameters(minimumPercent, maximumPercent);
break;
case "Standard Deviation":
// Read the standard deviation factor (the number of standard deviations used to define the range of pixel values).
double standardDeviationFactor = Convert.ToDouble(StdDeviationFactorComboBox.SelectedValue);
// Create a new StandardDeviationStretchParameters with the selected number of standard deviations.
stretchParameters = new StandardDeviationStretchParameters(standardDeviationFactor);
break;
}
// Create an array to specify the raster bands (red, green, blue).
int[] bands = { 0, 1, 2 };
// Create the RgbRenderer with the stretch parameters created above, then apply it to the raster layer.
RgbRenderer rgbRenderer;
StretchRenderer stretchRenderer;
if (stretchItem.IsEnabled == false)
{
rgbRenderer = new RgbRenderer(stretchParameters, bands, null, true);
_rasterLayer.Renderer = rgbRenderer;
}
else if (stretchItem.IsEnabled == true)
{
PresetColorRampType pcrt;
int colorType = Convert.ToInt32(ColorRampCsy.SelectedIndex - 1);
switch (colorType)
{
case -1:
pcrt = PresetColorRampType.Elevation;
break;
case 0:
pcrt = PresetColorRampType.Elevation;
break;
case 1:
pcrt = PresetColorRampType.DemScreen;
break;
case 2:
pcrt = PresetColorRampType.DemScreen;
break;
default:
pcrt = PresetColorRampType.DemScreen;
break;
}
uint colorSize = Convert.ToUInt32(ColorRampSizeCsy.SelectedValue);
stretchRenderer = new StretchRenderer(stretchParameters, null, true, ColorRamp.Create(pcrt, colorSize));
_rasterLayer.Renderer = stretchRenderer;
}
}