A point plotter (or point grapher or coordinates 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 coordinates or the polar coordinates.
In addition to plotting points (xn, yn) in the Cartesian coordinate system this point 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.
Furthermore, utilizing the most sophisticated Cartesian and polar coordinate systems, this point plotter is the only Cartesian and polar coordinates grapher that enables you to rotate any of the coordinate axes and graph coordinates in non-orthogonal Cartesian and generalized polar coordinate systems.
- pi is replaced by π.
In addition to inputting data – by first pressing the ⚙ (gear) button – you can use your mouse to perform some functionality unique to this interactive points grapher 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 systems coordinate system. Click again to release the axis.
- 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.
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To copy or save graphs right click on the image of a saved graph below and select "Copy image" or "Save image" from the pop-up menu.