private void PreserveColumns(IEnumerable <Transformation <double> > transformations)
{
foreach (var transformation in transformations)
{
if (!originalColumns.ContainsKey(transformation.Column))
{
int colIndex = preprocessingData.GetColumnIndex(transformation.Column);
var originalData = preprocessingData.GetValues <double>(colIndex);
originalColumns.Add(transformation.Column, originalData);
}
}
}
public void SetFilter(bool[] remainingRows)
{
filteredData = (IPreprocessingData)originalData.Clone();
filteredData.InTransaction(() => {
var remainingIndices = Enumerable.Range(0, remainingRows.Length).Where(x => remainingRows[x]);
foreach (var v in filteredData.VariableNames)
{
var ci = filteredData.GetColumnIndex(v);
if (filteredData.VariableHasType <double>(ci))
{
var values = filteredData.GetValues <double>(ci);
var filteredValues = remainingIndices.Select(x => values[x]).ToList();
filteredData.SetValues(ci, filteredValues);
}
else if (filteredData.VariableHasType <DateTime>(ci))
{
var values = filteredData.GetValues <DateTime>(ci);
var filteredValues = remainingIndices.Select(x => values[x]).ToList();
filteredData.SetValues(ci, filteredValues);
}
else if (filteredData.VariableHasType <string>(ci))
{
var values = filteredData.GetValues <string>(ci);
var filteredValues = remainingIndices.Select(x => values[x]).ToList();
filteredData.SetValues(ci, filteredValues);
}
}
});
OnFilterChanged();
}
