Update Mode Property

Short Name: UpdateMode

Installed With: Base Package

Class: IntensityChart Properties

Gets or sets the update mode of the chart. Valid values include 0 (Strip), 1 (Scope), and 2 (Sweep).

This property is similar to the Advanced»Update Mode item on the shortcut menu of an intensity chart and the Update mode option on the Appearance page of the Intensity Chart Properties dialog box.

0	Strip—Shows running data continuously scrolling from left to right across the chart with old data on the left and new data on the right. A strip chart is similar to a paper tape strip chart recorder.
1	Scope—Shows one item of data, such as a pulse or wave, scrolling partway across the chart from left to right. For each new value, the chart plots the value to the right of the last value. When the plot reaches the right border of the plotting area, LabVIEW erases the plot and begins plotting again from the left border. The retracing display of a scope chart is similar to an oscilloscope.
2	Sweep—Works similarly to a scope chart except it shows the old data on the right and the new data on the left separated by a vertical line. LabVIEW does not erase the plot in a sweep chart when the plot reaches the right border of the plotting area. A sweep chart is similar to an EKG display.

Example

Remarks

The following table lists the characteristics of this property.

Available in Run-Time Engine and Real-Time Operating System	Yes
Permissions	Read/Write
Settable when the VI is running	Yes
Loads the front panel into memory	No
Need to authenticate before use	No
Loads the block diagram into memory	No
Remote access disallowed	No
Must wait until user interface is idle	No
Available with control VIs	No
Available with global VIs	No
Available with strict type definitions	No
Available with polymorphic VIs	No

Example

Refer to the Chart Property Node VI in the labview\examples\general\cntrlref.llb for an example of using the Update Mode property.

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