public void ProcessData(IMatrixData mdata, Parameters param, ref IMatrixData[] supplTables,
ref IDocumentData[] documents, ProcessInfo processInfo)
{
var name = param.GetParam <string>("Name").Value;
var keep = param.GetParam <bool>("Keep original columns").Value;
var choice = param.GetParam <int[]>("Columns").Value;
var strategy = Strategies[param.GetParam <int>("Strategy").Value];
var combiner = GetCombiner(strategy);
var columns = choice.Select(mdata.GetCategoryColumnAt).ToArray();
var n = mdata.RowCount;
var values = new string[n][];
for (int i = 0; i < mdata.RowCount; i++)
{
var row = columns.Select(col => col[i]).ToArray();
values[i] = combiner(row);
}
if (!keep)
{
// if unsorted removing column will change index of other columns
foreach (var col in choice.OrderByDescending(col => col))
{
mdata.RemoveCategoryColumnAt(col);
}
}
mdata.AddCategoryColumn(name, "Combined column", values);
}
