A computer program which plots radar video data generated by a seeker on a missile. The program allows a user to plot multiple scans of radar video data on a chart, which is obtained from a Data Worksheet. The chart displays one or more sets of radar video data scans and a detection gate plot for each radar video data scan. The program includes Zoom In, Zoom Out, Pan Left and Pan Right functions which allow the user to view and manipulate views of the data displayed by the chart.