You can use reference dimensions to indicate the relative position of an object compared to some fixed point, such as a wall or steel column.
The ability to place or edit a reference dimension using relative coordinates is only available if the 3D coordinates of the referenced point are fully defined.
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Click Place > Reference Dimension.
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Click the pipe, component, or open end to define the location of the reference dimension.
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Click a second point in the Detail window to indicate the location of the reference dimension flag.
The software opens the Reference Dimension dialog box.
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Define the reference point values, and then click OK.
The software places the reference dimension in the sketch and displays its attribute information in the Properties window.
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In the Properties window, define the reference dimension attributes.
The table below lists attribute data for reference dimensions:
Attribute Name |
Description |
Referenced Item |
Select from the list of referenced objects. Isogen uses annotation for each of the items. |
Referenced Item Direction |
Select the orientation of the symbol drawn by Isogen for the referenced object. |
LineStyle |
Select the line type of the symbol drawn by Isogen for the referenced object. |
Message |
Type the name or some other identification for the referenced item. |
Style |
Select how the message text is displayed. |
Status |
Show the referenced item dimensioned or undimensioned. If you select Dimensioned, Isogen displays the dimension; if you select Undimensioned, it does not. |
Type of Dimension |
Select either the orthogonal dimension style or the skew dimension style. |
You can use the Properties window to edit the coordinates of a referenced object using absolute or relative coordinates. Alternatively, right-click the origin on the referenced object, and then select Edit.