public IDataMatrix Build()
{
var cols = DataMatrixFactory.GetColumns(_columnHeaders, _columnHeaders, _dependentColumns.ToArray(), false);
var colIndexes = DataMatrixFactory.GetDependencySortOrder(cols);
//create data matrix
var dm = new DataMatrixLite(_arrValues.GetLength(0), cols.ToArray());
for (var rowIndex = 0; rowIndex < _arrValues.GetLength(0); rowIndex++)
{
foreach (var colIndex in colIndexes)
{
var myCol = cols[colIndex];
if (myCol.Compute == null)
{
dm[rowIndex][colIndex] = _arrValues[rowIndex, colIndex];
}
}
}
//update computed columns
dm.ComputeDependentCols(colIndexes);
return(dm);
}
public static DataMatrixBuilder Create <T>(IEnumerable <T> values,
params Expression <Func <T, object> >[] valueSelectors)
{
var headers = valueSelectors.Select(func => DataMatrixFactory.GetProperty(func).Name).ToArray();
var selectors = valueSelectors.Select(exp => exp.Compile()).ToArray();
return(Create(values.ToArray(), headers, selectors));
}
