In the Data Builder, select the Series tab.

Select the Search Database button and in the the Tree View, choose the front continuous Natural Gas futures contract by selecting Futures>NYMEX. Select the symbol NG , then double-click Close to add the symbol information to the Worksheet. Select the Configuration button to return to the Configuration window.

In the Data Builder, from the Time Units pull-down, change the units to Weekly.

From the Column pull-down, change the setting to Bar.

Before you chart the Worksheet, you must change the date options to 2 years. In the Data Builder, set the Change Period to 2 years.

From the menu bar, select View>Chart Options and verify the Legend Anchor is set to North and the Legend Orientation is set to Vertical. Select the Chart button to chart of the information contained in the Worksheet.

The chart plots the weekly bar for the front continuous Natural Gas futures contract and displays this weekly bar on a daily basis because the Execution Units are set to Daily.

Select the Configuration button to return to the Configuration window.

In the Worksheet Options pane, change the Execution Units to 1 Week.

Chart the Worksheet by selecting the Chart button from the toolbar.

Notice the weekly bar is now displayed on a weekly basis for the last two years. The weekly bar is created by using the opening price for the week, the closing price for the week and the high and low reached during the week. Since weekly bar charts can indicate different interpretations of price patterns than those indicated by daily charts, many market participants use both types of charts in their analysis.

Select the New button to clear off the existing worksheet and start the "Problem Solvers" section. Do not save the Worksheet.