Setting up a character investigation

A character investigation analyzes multiple single-domain columns. For a concatenate character investigation, select columns from anywhere in a record to be investigated as a single data column.

1. In the Investigate stage window, click Character Discrete Investigate or Character Concatenate Investigate.
2. Under Available Data Columns, select a column to investigate.
3. Click Add To Selected Columns.

   The column appears in the Scheduled Process box and the Mask Column Selection window opens. By default, all characters at each position in the column are set to T (type).

4. For every position in the column, adjust the mask according to one of the following options:
   • To set all characters in the column to display one investigation category, click the appropriate button (All T, All C, or All X).
   • To set the mask for individual characters in the column, click a particular character until the desired mask type appears.

   For more information about column masks, see Column masks.

5. Click OK to close the Mask Column Selection window after you set the mask.
6. Repeat steps 2-5 for additional columns you want to investigate.
   • For a character discrete investigation, each selected column is investigated separately.
   • For a character concatenate investigation, all selected columns are concatenated, based on the chosen masks.
7. To change the number of samples or the frequency cutoff, click Advanced Options.

   The Investigate Advanced Options window opens.

8. In the window, select one of the following options:
   • Specify the number of samples of source data to include in the report for each pattern.
   • To skip patterns that appear infrequently, specify a frequency cutoff level. Patterns with frequencies under the specified level do not appear in the report.
9. Click OK.

   You can change these settings at any time.

10. Click OK to close the stage.