Creating Coordinate Dimensions 

This task shows how to create a coordinate dimension based on the coordinates of a selected point. See Dimension Units for more information on dimension unit display.
Open the CoordinateDimension.CATPart document.
  1. Activate the Front View.2 annotation plane.

  2. Click Coordinate Dimensions  in Annotations toolbar.
    The Tools Palette is displaying allowing you to select the creation of 2D or 3D coordinate dimensions.
    • 2D Coordinates lets you create 2D (x, y) coordinate dimensions in the active view axis system.

    • 3D Coordinates lets you create 3D (x, y, z) coordinate dimensions in the part/product axis system.

    For the purpose of this scenario, make sure 3D Coordinates is selected.

    Or right-click anywhere to display the contextual menu.

  3. Select a point as shown below.

    The dimension is created.
    You can select the following elements: a vertex, a point (on a curve, on a plane, a coordinate), a line center or a point on a curve.
  4. Drag the dimension to position it as wanted.


     
    Once a coordinate dimension has been created, you cannot change its type (i.e. you cannot turn a 2D coordinate dimension into a 3D coordinate dimension, and vice-versa).
 

Modifying Coordinate Dimension Value Display Format

   
Create a coordinate dimension.
  1. To modify the coordinate dimension value display format, right click the coordinate dimension to display the contextual menu and select Properties (or use Edit > Properties command).

    The Properties dialog box is displayed.

  2. The display format can be changed in the Numerical tab.

    Format
    : you can set required format.

    • Description: select a type of format. To get the detailed description about the format selected from the drop down list, click the information point .
      If the selected format is NUM.DIMM, then the description would be as:

       

      The Description standard and its format values can be customized by the administrator in value formats (Tools > Standards > [standard name] > Value Formats).
         
    • Display: depending on selected format, you can choose to display one, two or three factors to be seen.

    • Format: only decimal format available.

    • Precision: select the value precision.
       

    • The properties of the display value format can be customized by the administrator in value display format (Tools > Standards > [standard name] > Value Display Format). For more information refer to Dimension Styles in Interactive Drafting User Guide.
    • If new styles have been defined by the administrator in Tools > Standards for this type of element, then these will be displayed in the Style toolbar drop down down list. The properties of the element can be changed by selecting another style from the list.
  3. In this case select description as FEET-INC and factor as 2. The coordinate dimension display value is changed.
    Click OK.

    If only the description format name and precision value is to be changed, then you can use Numerical Properties toolbar and select from the drop down list.

     
    • Each coordinate dimensions can have different display parameters (format description, precision value, etc.).
    • The Display Units option (via Edit > Properties, Text tab) is available for only those pre-R18 coordinate dimensions that do not have format information.
    • When the given format name is not valid (i.e. does correspond to an existing value format description or left blank), then the coordinate dimension on which the style is applied or the NUM.DIMM format, or the first allowed in the Allowed Numerical Formats will be applied.
    • For pre-R18 drawing:
      • If the option Use style values to create new objects is checked in Tools > Options > Drafting, Administration tab, the description information will not be set and the resulting coordinate dimension will follow the old display.
      • If this option is cleared the value available in the Numerical Properties toolbar will be used.