private void lShannonsDiversityIndex(string filename, string epsg, int fieldIndex)
{
try
{
//Obtenemos un arraylist con toda la colección de registros del campo
ArrayList fieldRows = new ArrayList();
SchemaDB_Reader collect = new SchemaDB_Reader(filename, fieldIndex);
fieldRows = collect.FieldValues;
//obtenemos un arraylist con las categorias encontradas en el campo
ArrayList categories = new ArrayList();
SchemaDB_Reader categ = new SchemaDB_Reader();
categories = categ.categories((ArrayList)fieldRows.Clone());
C_LandscapePercent_V diversity = new C_LandscapePercent_V(filename, epsg, fieldIndex);
double _shannonsDiversityIndexTemp = 0;
for (int i = 0; i < diversity.CategoryNames.Count; i++)
{
_shannonsDiversityIndexTemp += ((double)diversity.LandscapePercent[i] / 100) * Math.Log(((double)diversity.LandscapePercent[i] / 100));
}
_shannonsDiversityIndex = _shannonsDiversityIndexTemp * -1;
}
catch (Exception ex)
{
throw ex;
}
}
private void lSimpsonsDiversityIndex(string filename, string epsg, int fieldIndex)
{
try
{
C_LandscapePercent_V diversity = new C_LandscapePercent_V(filename, epsg, fieldIndex);
double _simpsonsDiversityIndexTemp = 0;
for (int i = 0; i < diversity.CategoryNames.Count; i++)
{
_simpsonsDiversityIndexTemp += Math.Pow(((double)diversity.LandscapePercent[i] / 100), 2);
}
_simpsonsDiversityIndex = 1 - _simpsonsDiversityIndexTemp;
}
catch (Exception ex)
{
throw ex;
}
}
private void landscapeMetrics(string filename, string epsg, int fieldIndex)
{
try
{
//Obtenemos un arraylist con toda la colección de registros del campo
ArrayList fieldRows = new ArrayList();
SchemaDB_Reader collect = new SchemaDB_Reader(filename, fieldIndex);
fieldRows = collect.FieldValues;
//obtenemos un arraylist con las categorias encontradas en el campo
ArrayList categories = new ArrayList();
SchemaDB_Reader categ = new SchemaDB_Reader();
categories = categ.categories((ArrayList)fieldRows.Clone());
_numLandscapeCategories = categories.Count;
L_Area_V totalArea = new L_Area_V(filename, epsg);
_patchRichnessDensity = ((_numLandscapeCategories / totalArea.LandscapeArea)) * 100;
C_LandscapePercent_V diversity = new C_LandscapePercent_V(filename, epsg, fieldIndex);
double _simpsonsDiversityIndexTemp = 0;
double _shannonsDiversityIndexTemp = 0;
for (int i = 0; i < diversity.CategoryNames.Count; i++)
{
_shannonsDiversityIndexTemp += ((double)diversity.LandscapePercent[i] / 100) * Math.Log(((double)diversity.LandscapePercent[i] / 100));
_simpsonsDiversityIndexTemp += Math.Pow(((double)diversity.LandscapePercent[i] / 100), 2);
}
_shannonsDiversityIndex = _shannonsDiversityIndexTemp * -1;
_simpsonsDiversityIndex = 1 - _simpsonsDiversityIndexTemp;
_modifiedSimpsonsDiversityIndex = -Math.Log(_simpsonsDiversityIndexTemp);
_shannonsEvennessIndex = _shannonsDiversityIndex / Math.Log(_numLandscapeCategories);
_simpsonsEvennessIndex = _simpsonsDiversityIndex / (1 - (1 / (double)_numLandscapeCategories));
_modifiedSimpsonsEvennessIndex = _modifiedSimpsonsDiversityIndex / Math.Log(_numLandscapeCategories);
}
catch (Exception ex)
{
throw ex;
}
}
