Ranges of plots, Ranges of plots -6 – National Instruments Xmath Interactive Control Design Module ICDM User Manual

Page 37

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Chapter 3

ICDM Main Window

Xmath Interactive Control Design Module

3-6

ni.com

In the ICDM Main

window, the Plot Choices

dialog

box is used to select

any combination of the eight plots. This dialog box is modal so you cannot
interact with any other Xmath window until you dismiss it.

Ranges of Plots

The ranges for the plots can be set in the Ranges

window, shown in

Figure 3-3. The Ranges

window can be made to appear by selecting

Plot»Ranges or pressing <Ctrl-R> in the ICDM Main window. The
Ranges

window also is used to determine the number of points used

in the plots.

ICDM provides two convenient ways to select ranges for the plots. The first
is to use the Autoscale feature which can be invoked from the Plot menu
or from the Ranges

window. When Autoscale is invoked, ICDM tries to

assign sensible ranges to the plots but does not always succeed. The second
convenient method for changing the ranges of plots is to use interactive
re-ranging, which is described in the

General Plotting Features

section

of Chapter 2,

Introduction to SISO Design

.

The ICDM Ranges

window, shown in Figure 3-3, is used to set the analysis

ranges and plot ranges for the ICDM Main

window.

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