<Functions> tab 

For constructing the contour by mathematical expression press <Profile by function> button and in opened window choose the page <Functions>.
After defining the parameters of a function press the <Calculate> button to receive the set of points. The table of points will be filled up after calculation. This can be used <Cartesian> or <Polar> coordinate system. If the <Contour definition> option is switched on then a contour is constructed as the function result but the result is a point set otherwise. The points can be saved into the text file. There is two buttons to work with files:
Below you can see two examples of a contour constructing.
See also: Contour construction by mathematical expression 
