The dialog Parametric function is used to perform the settings for plots of parametric functions.
In the groups x(t) and y(t) the setting for the abscissa an the ordinate function may be performed in the same way.
In the fields Library the paths of the shared libraries containing the functions to be chosen may be entered. The buttons right to the entry fields open file selection dialogs for this purpose.
The names of the Functions for x(t) and y(t) are entered in the corresponding fields. When in the same directories as for the shared libraries module definition files with the same names but the extension .def are present, the functions may be chosen from a list in the dialog Functions, opened with the buttons right to the entry fields.
With the buttons Edit a dialog Parameter may be opened, which allows to enter the values of up to 20 parameters of the functions. When the option Show Function Source is activated in the Settings menu and a C or C++ language source file with the same name as the shared library with the extension .c or .cpp, respectively, is present in the same directory, its contents is displayed right to the parameter fields, too. The buttons Load open a file selection dialog for loading the parameters from an ASCII file (one parameter each line). The buttons Save open a file selection dialog for saving the parameters in an ASCII file.
The limits for the function's common argument t are entered using the fields tmin and tmax. With Delta t the step length for the argument is set. A value of 0 results in automatically dividing the range from tmin to tmax into 100 intervals.
Factors for x normalization and y normalization may be entered manually. These factors also may be determined automatically using Autoscale with checked Normalization in the dialog Frame.
Markers (Symbol <= 0) or lines (Symbol > 0) may be chosen to present thefunctions. This is done most convenient using the dialog Lines and Markers, to be opened with the button right to the spin box, which shows the actual line or marker.
The Color of lines or markers may be chosen using the dialog Select Color, opened with the colored button.
A function value table may be exported as a data file by use of the button Export. A file selection dialog will be opened for this purpose.
The dialog may be canceled without saving by use of the button Cancel. By using Apply changes are saved without closing the dialog. With OK changes are saved and the dialog is closed.