Frames of coordinates

You can define in MathGraph32 as many frames as desired.

To create a frame, use the tool or the menu Create - Frame.

If you want to create frame (O,I,J) simply click on O, I and J in that order.

It is possible to create a new figure with a frame.

For this use tool of the top toolbar.

Different sorts of frame are available :

• orthonormal frame.
• orthogonal frame.
• regular oblique frame.
• oblique frame with equal length unities

A frame can be created with grid and dots at integer coordinates.

To modify a frame already created, use icon of the top toolbar (numerical object modification), select the frame in the listand click on button Modify or use icon

(figure protocol), select the frame in the list and click on modification icon  (you cal also double-click on the frame in the list).

When a new figure is created with a frame, radio boxes at the bottom of the dialog box allow the user to give scales to the axis.

A trigonometry scale is available to scale the x-axis with multiples of pi.

The scales on each half-axis can be moved with capture tool .

It is possible to add scales to the axis of a frame after the creation of the frame.

You can also choose to add an arrow and (or) a lable at the end of each axis

For this use icon of the calculations expandable bar (third starting from the button).

Two possibilities :

• A simple scale (with the ability to choose the step and the number of scales on each axis).
• A trigonometry scale with multiple of pi on the x-axis ans a step of scaling on y-axis to be given.