void tscompute(string strDatasetName, int iGroupSize)
{
	// Declare dataset and verify
	Dataset dsData(strDatasetName);
	if(!dsData)
	{
		printf("Dataset is not valid!\n");
		return;
	}
	
	// Check group size
	int iSize = dsData.GetSize();
	if ( iGroupSize < 0 || iGroupSize > (iSize/2) )
	{
		printf("Incorrect group size!\n");
		return;
	}
	
	// Create new wks for results
	Worksheet wks;
	wks.Create("origin.otw");
	// Delete all existing columns
	while (wks.Columns(0))
		wks.DeleteCol(0);
	// Add new colums and assign them label names and set them wide enough
	int iColIndex;
	iColIndex = wks.AddCol();
	wks.Columns(iColIndex).SetLabel("Group No.");
	wks.Columns(iColIndex).SetType(OKDATAOBJ_DESIGNATION_X);
	wks.Columns(iColIndex).SetWidth(11);
	iColIndex = wks.AddCol();
	wks.Columns(iColIndex).SetLabel("Group Min");
	wks.Columns(iColIndex).SetWidth(11);
	iColIndex = wks.AddCol();
	wks.Columns(iColIndex).SetLabel("Group Max");
	wks.Columns(iColIndex).SetWidth(11);
	iColIndex = wks.AddCol();
	wks.Columns(iColIndex).SetLabel("Group Mean");
	wks.Columns(iColIndex).SetWidth(11);
	iColIndex = wks.AddCol();
	wks.Columns(iColIndex).SetLabel("Group Std Dev");
	wks.Columns(iColIndex).SetWidth(11);
	// Turn on label display for columns
	wks.ShowLabels();

	// Loop over dataset, set the range for each group, and compute stats
	BasicStats stat;
	int iSteps = iSize / iGroupSize;
	for(int ii = 0; ii < iSteps; ii++)
	{
		int iBegin = ii * iGroupSize;
		int iEnd = iBegin + iGroupSize - 1;
		dsData.SetLowerBound(iBegin);				// set begin marker for dataset
		dsData.SetUpperBound(iEnd);					// set end marker for dataset

		Data_sum(&dsData, &stat);					// compute stats
		wks.SetCell(ii, 0, ii);						// plug values into wks
		wks.SetCell(ii, 1, stat.min);
		wks.SetCell(ii, 2, stat.max);
		wks.SetCell(ii, 3, stat.mean);
		wks.SetCell(ii, 4, stat.sd);
	}
	
	dsData.SetLowerBound(0);						// reset range to full
	dsData.SetUpperBound(iSize - 1);
}