A points plotter is a grapher that plots a set of points in a coordinate system where the coordinates of the points are given by ordered pairs (an, bn).
The components of the ordered pairs can be either the Cartesian or polar coordinates.
In addition to plotting points (xn, yn) in the Cartesian coordinate system this points grapher can be used to plot points (rn, θn) in the polar coordinate system where the angle θn can be entered in radians, degrees or grades.
- pi is replaced by π.
Utilizing the most sophisticated Cartesian and polar coordinate systems, this coordinates plotter allows using your mouse to Rotate Axis, Translate the Origin and Change Scales (in addition to inputting data) as outlined below.
- Click on (or near) an axis and move your mouse. That will rotate the axis. The graph(s) are re-drawn in the non-orthogonal (non-perpendicular) Cartesian or generalized polar coordinate system. Click again to release the axis. You can undo this by pressing the Rest under Rotate Axes panel.
- Drag the mouse to move the coordinate system together with the graphs.
- Double-click in the canvas to move the origin to where was clicked.
- Hold down Alt key and click on an axis to change the scale (zoom in one direction); the point which was clicked will be labelled "1" (or "-1") and becomes the new unit for that axis.