Chapter 3
Measurement Studio Visual C++ Class Libraries
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National Instruments Corporation
3-11
Measurement Studio User Manual
Graph Control
Use the Measurement Studio ActiveX graph control, as shown in
Figure 3-3, to plot and chart two-dimensional data. The
CNiGraph
class
provides the Visual C++ interface to the ActiveX graph control.
Figure 3-3.
ActiveX Graph Control
With the graph control and the classes that interface with the control, you
can perform the following operations:
•
Plot and chart data.
•
Configure a graph to contain multiple plots to show separate but
related data on the same graph.
•
Configure a graph to include multiple Y axes so that plot data fits the
graph plot area.
•
Use cursors and annotations to identify key points in plots and the
plot area.
•
Configure cursor snap modes to be fixed, floating, nearest point,
and to plot.
•
Pan and zoom interactively.
•
Use the
CNiAxis
class to interface to a single axis of a graph control.
This feature allows you to modify the appearance and behavior of
the axis.
•
Automatically label axes with log or inverted numeric scales.
•
Configure the axis modes for manual scaling or autoscaling.
•
Configure the graph for fixed, strip, or scope charting.
•
Customize the graph by using ticks, labels, and value pairs.
