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.