Launch the Chart Platform

Launch the Chart platform by selecting Graph > Legacy > Chart.

Figure 14.5 The Chart Launch Window

In the Chart launch window, you can assign the following:

•

Up to two X variables, which appear on the x-axis in the same order that you assign them in the launch window.

•

As many Y variables (statistics) as you want. If the data is already summarized, select Data as the statistics option.

The following options are available:

Cast Selected Columns Into Roles

Statistics

Use this menu to select the statistic to chart for each Y variable.

See Plot Statistics for Y Variables.

Categories, X, Levels

Select up to two X variables whose levels are categories on the x-axis. The Chart platform produces a bar for each level or combination of levels of the X variables. If you do not specify an X variable, the chart has a bar for each row in the data table.

See Use Categorical Variables.

Additional Roles

Grouping

For one or more Grouping variables, independent results are produced for each level or combination of levels of the grouping variables. These results appear in the same report window, but in separate plots. See Use Grouping Variables.

Weight

Assigns a variable to give the observations different weights.

Freq

Assigns a frequency variable. This is useful if you have summarized data.

By variables cause plots to be created in separate outline nodes.

Options

Overlay

If this option is selected, all Y variables are plotted in one graph. If this option is not selected, each Y variable is plotted in its own graph. This option is selected by default where available.

This option is available for all chart types except Pie Chart.

Chart Orientation

Select Vertical for a vertical chart or Horizontal for a horizontal chart. Vertical is the default option.

This option is available for all chart types except Pie Chart.

Chart Type

Select the type of chart that you want. Available chart types are Bar Chart, Line Chart, Pie Chart, Needle Chart, and Point Chart. Selecting a chart controls which of the other options are available.

You can always change these options after the chart appears. See Y Options.

Show Points

Shows the points in the plot. This option is selected by default where available.

This option is available for all chart types except Bar Chart and Pie Chart.

Connect Points

Connects the points in the plot. Show Points does not have to be selected to connect points. This option is selected by default where available.

This option is available only for Line Chart.

Add Error Bars to Mean

Adds error bars when the Mean statistic is selected for at least one Y variable and at least one X variable is assigned. This option is not selected by default.

This option is available for Line Chart and Bar Chart, and additional options are added to the Chart launch window. See Adding Error Bars.

Percent for quantiles

Sets the specific quantile when the Quantiles statistic is selected for at least one Y variable. The default value is 25. Specify a different quantile:

Type the value in the Percent for quantiles box.

Select a column.

Click Statistics.

Select Quantiles from the menu of statistics.

For more information about the launch window, see Launch Windows in the Using JMP book.

After you click OK, the Chart report window appears. See The Chart Report.