Origin Property

LabVIEW 2018 Help


Edition Date: March 2018
Part Number: 371361R-01
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Short Name: Origin

Requires: Base Development System

Class: Picture Properties

To Use: Create a property.

Horizontal and vertical coordinates of the point in the picture you want to display in the upper left corner of the picture control or indicator.

Increasing the horizontal coordinate shifts the picture to the left, and increasing the vertical coordinate shifts the picture to the top.

You can use this property to display a different portion of a picture in the picture control or indicator. For example, if you wire 100 and 100 to this property, LabVIEW draws the upper left corner of the picture 100 pixels above and 100 pixels to the left of the upper left corner of the control or indicator.

If you change the origin and LabVIEW draws part of the picture outside the draw area of the picture control or indicator, you can use the Horizontal Scrollbar Visible and Vertical Scrollbar Visible properties to display scroll bars for the picture control or indicator. As you move the scroll bars of the picture control or indicator, the origin of the picture in the control or indicator changes, and the coordinates returned by this property change.

Elements

Name Description
Left Horizontal coordinate of the point in the picture you want to display in the upper left corner of the picture control or indicator.
Top Vertical coordinate of the point in the picture you want to display in the upper left corner of the picture control or indicator.

Example

Remarks

The following table lists the characteristics of this property.

Data type
PermissionsRead/Write
Available in Run-Time EngineYes
Available in Real-Time Operating SystemYes
Settable when the VI is runningYes
Loads the front panel into memoryNo
Need to authenticate before useNo
Loads the block diagram into memoryNo
Remote access allowedYes

Example

Refer to the Zoom Attribute VI in the labview\examples\Graphics and Sound\2D Picture Control directory for an example of using the Origin property.

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