To Interpret a Coordinate System as Cartesian or Polar

You can choose between two types of draft grids: Cartesian and Polar. The system creates a Cartesian grid by locating points on a plane, measuring their distance from either of two intersecting straight-line axes along a line parallel to the other axis.

The system creates a Polar grid by locating points in a plane, measuring their distance from a fixed point on a line and the angle this line makes with a fixed line. To change from one type to another, click File > Options > Sketcher. Under Sketcher grid, select a different grid type.

When using a two-dimensional draft grid in a drawing, keep in mind the following:

• The grid snap falls on the grid lines when grid snap is on (set in the Sketcher area of the Creo Parametric Options dialog box).

• The grid origin and angle affect the coordinate values specified for datum points. The x-axis is always along one direction of the grid, while the y-axis is along the other.

• The grid origin affects the coordinate values appearing in the message area when sketching.