3.14.9 Plots by formula

These functions perform plotting of 1D or 2D functions specified by textual formula. You do not need to create the data arrays to plot it. The parameter stl set the line style (see section Line styles) for Plot() or color scheme (see section Color scheme) for Surf(). The parameter n set the minimal number of points along coordinate(s) for plots. At this time (v. 1.10) there is adaptive increase of data points numbers but only for 1D variant (i.e. for Plot()).

Method on mglGraph (C++, Python): void Plot (const char *eqY, const char *stl="", float zVal=NAN, int n=100)

C function: void mgl_fplot (HMGL gr, const char *eqY, const char *stl, float zVal, int n)

The function draws function ‘eqY(x)’ at plane z=zVal where ‘x’ variable is changed in range [Min.x, Max.x]. See also Plot.

Method on mglGraph (C++, Python): void Plot (const char *eqX, const char *eqY, const char *eqZ, const char *stl="", float zVal=NAN, int n=100)

C function: void mgl_fplot_xyz (HMGL gr, const char *eqX, const char *eqY, const char *eqZ, const char *stl, float zVal, int n)

The function draws parametrical curve {‘eqX(t)’, ‘eqY(t)’, ‘eqZ(t)’} where ‘t’ variable is changed in range [0, 1]. See also Plot.

Method on mglGraph (C++, Python): void Surf (const char *eqZ, const char *stl="", int n=100);

C function: void mgl_fsurf (HMGL gr, const char *eqZ, const char *stl, int n);

The function draws surface for function ‘eqY(x,y)’ where ‘x’, ‘y’ variables are changed in range [Min, Max]. See also Surf.

Method on mglGraph (C++, Python): void Surf (const char *eqX, const char *eqY, const char *eqZ, const char *stl="", int n=100)

C function: void mgl_fsurf_xyz (HMGL gr, const char *eqX, const char *eqY, const char *eqZ, const char *stl, int n)

The function draws parametrical surface {‘eqX(u,v)’, ‘eqY(u,v)’, ‘eqZ(u,v)’} where ‘u’, ‘v’ variables are changed in range [0, 1]. See also Surf.