Modifying Coordinate Systems

Keep in mind that when you edit a CS, the following will also be affected:

• All objects drawn on the CS.
• All CSs that were defined relative to that CS.
• All objects drawn on a CS that were defined relative to that CS.

There are two ways to modify a coordinate system. You can select the coordinate system in the History Tree and edit its parameters in the docked Properties window. This approach does not allow you to change whether the coordinate system is Absolute or Relative. Nor does it allow you to change how you express the coordinates (as Cartesian, Cylindrical, or Spherical).

If you want to also modify the whether the coordinate system is Absolute or Relative, and to change how your express the coordinates, do the following:

1. From the menu bar, click Modeler> Coordinate System> Edit.

   The Select Working CS dialog box appears.

2. Select the CS you want to modify.
3. Click Select.

   This action places you in the graphical selection mode for redefining the CS (origin or X-axis) and enables the editable text boxes in the Status Bar at the bottom right area of the Ansys Electronics Desktop application.

   

4. You can click points to redefine the CS. Alternatively, you can specify the type of coordinate definition (Absolute or Relative) and tab between the coordinate entry text boxes in the Status Bar to numerically define new coordinates.
   • If you selected a Relative CS, follow the directions for creating a relative CS.
   • If you selected a Face CS, follow the directions for creating a face CS.
   • If you selected an Object CS, follow the directions for creating an object CS.
5. Select the type of coordinate system from rightmost drop-down menu in the Status Bar (Cartesian, Cylindrical, or Spherical).

   The values you specify are translated to Cartesian coordinates in the Properties of the revised coordinate system.

An Object CS can be edited in the same way as it was created. For example, if the CS was created in Offset mode, it will be edited in Offset mode only.

• You can edit the reference CS of an object CS through the docked Properties window or the Properties dialog box. Doing so will impact object CSs created in Offset or Rotated mode. It will not impact an object CS created in Both (offset and rotated) mode, as the CS fully depends on the object.
• The Origin will be editable when an Object CS was created in Rotated mode. Otherwise the Origin coordinates will be read-only text.
• The X Axis and Y Axis will be editable when an Object CS was created in Offset mode. Otherwise it will be axis coordinates will be read-only text.
• Either the X Axis or Y axis can be reversed through the docked Properties window or the Properties dialog box. When the X Axis is reversed, the Y Axis does not change and vice versa.
• When origin or axis properties are defined from snapping points, the point ID is listed in the properties instead of the coordinates. Some examples of snapping point IDs are: Vertex_10, Face_7 center, Edge_9 midpoint, Edge_8 quadrant, and Edge_17 arc center.