private static async void SetRasterColorByAttributeField(RasterLayer raster, string fieldName, StyleProjectItem styleProjItem)
{
await QueuedTask.Run(() =>
{
var ramps = styleProjItem.SearchColorRamps("Green Blues");
CIMColorRamp colorRamp = ramps[0].ColorRamp;
var colorizerDef = new UniqueValueColorizerDefinition(fieldName, colorRamp);
var colorizer = raster.CreateColorizer(colorizerDef);
// fix up colorizer ... due to a problem with getting the values for different attribute table fields:
// we use the Raster's attribute table to collect a dictionary with the correct replacement values
Dictionary <string, string> landuseToFieldValue = new Dictionary <string, string>();
if (colorizer is CIMRasterUniqueValueColorizer uvrColorizer)
{
var rasterTbl = raster.GetRaster().GetAttributeTable();
var cursor = rasterTbl.Search();
while (cursor.MoveNext())
{
var row = cursor.Current;
var correctField = row[fieldName].ToString();
var key = row[uvrColorizer.Groups[0].Heading].ToString();
landuseToFieldValue.Add(key.ToLower(), correctField);
}
uvrColorizer.Groups[0].Heading = fieldName;
for (var idxGrp = 0; idxGrp < uvrColorizer.Groups[0].Classes.Length; idxGrp++)
{
var grpClass = uvrColorizer.Groups[0].Classes[idxGrp];
var oldValue = grpClass.Values[0].ToLower();
var correctField = landuseToFieldValue[oldValue];
grpClass.Values[0] = correctField;
grpClass.Label = $@"{correctField}";
}
}
raster.SetColorizer(colorizer);
});
}
private static async void SetRasterColorByRGBAttributeFields(RasterLayer raster, List <string> fields)
{
await QueuedTask.Run(() =>
{
// set fieldName to the first column
var fieldName = "n/a";
bool setFieldName = false;
foreach (var attributeColumn in fields)
{
if (attributeColumn.Equals("value", StringComparison.OrdinalIgnoreCase))
{
setFieldName = true;
}
else
{
if (setFieldName)
{
fieldName = attributeColumn;
break;
}
}
}
var colorizerDef = new UniqueValueColorizerDefinition(fieldName);
var colorizer = raster.CreateColorizer(colorizerDef);
raster.SetColorizer(colorizer);
});
}