Row Selection

• SDDS_SetRowFlags -- Set all row-selection flags to a given value, indicating whether all rows are initially ``of interest'' or not. By default, all rows are initially of interest.
• SDDS_SetRowsOfInterest -- Modifies row-selection flags based on string matching to the data in a named column, with general two-term logic supported using the previous status of each row and the results of the newly-requested matching.
• SDDS_FilterRowsOfInterest -- Modifies row-selection flags based on whether the numeric entries in a named column are within a specified interval, with general two-term logic supported using the previous status of each row and the results of the newly-requested matching.
• SDDS_CountRowsOfInterest -- Counts the number of rows in the current data table that are currently ``of interest'', i.e., those with non-zero row-selection flags.
• SDDS_DeleteUnsetRows -- Deletes all rows of the current data table that are not currently of interest.