Labeling Graphs—81

There are three methods for displaying the confidence intervals in boxplots. They may be notched, shaded, or not drawn at all, which you may specify using one of the supported keywords (notch, shade, none). For example,

boxgraph01.setbpelem ci(notch)

draws the confidence intervals in BOXGRAPH01 as notches.

Modifying the boxplot horizontal axis

The bplabel (p. 231) command for boxplots is similar to the datelabel command in time plots (see “Modifying the date/time axis” beginning on page 71). Use it to specify the frequency or alignment of labels on the horizontal axis. Provide the step method you wish to use, and optionally a step or alignment number. For example,

boxgraph02.bplabel interval(ends)

labels the first and last boxes in BOXGRAPH02. To label every fiftieth box, aligned with the tenth box:

boxgraph02.bplabel interval(cust, 50, 10)

A boxplot's horizontal scale can be modified further by placing the text labels at an angle, changing the text itself, or selectively hiding any of the labels. Using the bplabel command,

boxgraph02.bplabel angle(60) label(10, "First") -label(60)

sets the labels in BOXGRAPH02 to a 60 degree angle, changes the tenth box label to “First”, and hides the sixtieth label.

Labeling Graphs

As with all EViews objects, graphs have a label view to display and edit information such as the graph name, last modified date, and remarks. To modify or view the label information, use the label (p. 330) command:

graph12.label(r) Data from CPS 1988 March File

This command shows the label view, and the “r” option appends the text “Data from CPS 1988 March File” to the remarks field of GRAPH12.

To return to the graph view, use the graph keyword:

graph12.graph

All changes made in label view will be saved when the graph is saved.