History Data Property
Short Name: History
Installed With: Base Package
Class: IntensityChart Properties
Array of the history data of a chart. Wire an empty array to this property to clear the chart history.
 | Note Use strictly typed refnums when reading this property. |
This property is similar to the Clear Graph and Clear Chart items on the shortcut menu of a chart.
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 How to Clear Charts & Graphs VI in the labview\examples\general\graphs\charts.llb for an example of using the History Data property.
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