Coordinate Systems

Coordinate Systems

Plotting Area

By default explicitly given functions are plotted for visible part of the x-axis. For every pixel on the x-axis KmPlot calculates a function value. If the plotting area contains the resulting point it is connected to the last drawn point by a line. In the functions dialog window the interval, in which the graph shall be plotted, can be changed manually.

Parametric functions are plotted for parameter values from 0 upto 2π. This range can be set in the functions dialog window manually, too.

Cross Hair Cursor

During the mouse cursor points to the plotting area the cursor changes to a cross hair. The current coordinates can be found at the intersections with the coordinate axes and also in the status bar at the bottom edge of the main window.

You can trace the functions values more precisely by clicking onto or next to a graph. The cross hair then will be catched and be colored in the same color as the graph. A second click anywhere in the window will leave this trace mode.

Please notice that tracing is only possible with explicitly given functions. The coordinates are allways displayed according to cartesian system of coordinates. Neither parametric functions, nor functions given in polar coordinates, nor derivatives can not be traced this way.

Types of Coordinate Systems

As you can define the functions with cartesian or polar coordinates the grid can be displayed cartesian or polar divisions. Please choose the style for the cartesian grid between lines and little crosses in the grid dialog window.

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