Row Deletion

To delete rows from the table, provide either a list of row ranges or a conditional expression.

By range

A row range is in the form of first_row-last_row. You can give a list of row ranges separated by commas, e.g
   1-20, 25, 30-100

By condition

Use the calculator and column buttons to create a boolean formula (or type one in directly), indicating which rows should be deleted. All the rows that satisfy the condition (expression evaluates to TRUE, or not equal to zero) will be deleted.

When the "Delete" button (or <Return> key) is pressed, fv will ask for confirmation before actually deleting the rows.

See the calculator help page for information on how to specify the conditional expression.

Go to About fv.
Pages maintained by Bryan Irby
Send bug reports or feature requests via the FTOOLS help desk.

HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public

Last modified: Thursday, 16-Jul-2009 14:09:22 EDT