---
title: Reference Origin for Data Entry – O-Calc Pro Wiki
description: In O-Calc Pro v. 5.03 additional functionality was added to incorporate the use of a reference that can be set by the user. Two additional shortcuts were c
---

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# [Reference Origin for Data Entry – O-Calc Pro Wiki](https://www.osmose.com/o-calc/wiki/2017/11/10/reference-origin-for-data-entry)

 Written by [Admin](https://www.osmose.com/o-calc/wiki/author/admin) | Nov 10, 2017 2:50:00 PM

In O-Calc Pro v. 5.03 additional functionality was added to incorporate the use of a reference that can be set by the user. Two additional shortcuts were created to utilize this set reference for the manipulation of the height and rotation of various objects in O-Calc Pro. A reference can be set as an object, in which case the object’s height and rotation become the **reference elevation** and the **reference angle** respectively.

Only one reference can be set at a time, and this reference can be set either under the **Edit** drop down menu, or by right-clicking on an object and choosing the option “Set as Reference Origin for Data Entry”.

Reference Elevation

The reference elevation can be adjusted under the **Edit** drop down menu. Under edit, select **Reference Origin** to be able to **Set Origin Elevation** or **Clear Origin Elevation**. This is a value in feet, above the ground line. If the reference elevation was set by right-clicking on an object, the reference can be cleared by selecting **Clear Reference Origin** from this list.

A reference height that has been set will be “tagged” in the 3D view.

Once an origin is set, a user can utilize a shortcut to manipulate other objects heights in relation to that reference. This is done using a shortcut, entered in the “Installation Height” attribute of most components on a pole. This can be done by entering the shortcut **ref=+<value>** to make an object a set distance higher than the elevation, or **ref=-<value>** to make an object a set distance lower than the elevation; both positive and negative value can be used, but the + or – sign must also be included immediately following the **ref=**.

Reference Angle

The reference angle can be adjusted under the **Edit** drop-down menu. Under edit, select **Reference Origin** to be able to **Set Reference Angle** or **Clear Reference Angle**. This value is in degrees, moving either clockwise or counterclockwise from the 0 degree direction (blue arrow on ground line compass).

A reference angle that has been set will be “tagged” on the 3D View Groundline compass.

Once an origin is set, a user can utilize a shortcut to manipulate other objects rotations in relation to that reference. This is done using a shortcut, entered in the “Rotation” attribute of most components on a pole. This can be done by entering the shortcut **ref=+<value>** to rotate an object a given value clockwise from the reference angle, or **ref=-<value>** to rotate an object a given value counter-clockwise from the reference angle; both positive and negative value can be used, but the + or – sign must also be included immediately following the **ref=**.

*Note: The reference origin angle shortcut does not consider an objects **side** attribute as part of its initial angle*.

[View full post](https://www.osmose.com/o-calc/wiki/2017/11/10/reference-origin-for-data-entry)

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