3.13.3 VectL

These functions are obsolete – use Vect() functions instead.

Method on mglGraph (C++, Python): void VectL (const mglData &x, const mglData &y, const mglData &ax, const mglData &ay, const char *sch="", float zVal=NAN)

C function: void mgl_vectl_xy (HMGL gr, const HMDT x, const HMDT y, const HMDT ax, const HMDT ay, const char *sch, float zVal)

The function draws plane vector field plot for the field {ax, ay} depending parametrically on coordinates x, y at level z=zVal. The length of hachures is proportional to \sqrtax^2+ay^2. The number of hachures depend on MeshNum (see section Other settings). Points are denote the start of hachures. The color is specified by the string argument sch. Previous color scheme is used by default. The size of ax and ay must be equal. The minor dimensions of arrays x, y and ax must be equal too. Arrays x and y can be vectors (not matrices as ax). The vector field is plotted for each z slice of ax, ay. See also Vect, VectC, Flow, Dew. See section VectL sample, for sample code and picture.

Method on mglGraph (C++, Python): void VectL (const mglData &ax, const mglData &ay, const char *sch="", float zVal=NAN)

C function: void mgl_vectl_2d (HMGL gr, const HMDT ax, const HMDT ay, const char *sch, float zVal)

The same as previous with x, y equidistantly distributed in interval [Min, Max].

Method on mglGraph (C++, Python): void VectL (const mglData &x, const mglData &y, const mglData &z, const mglData &ax, const mglData &ay, const mglData &az, const char *sch="")

C function: void mgl_vectl_xyz (HMGL gr, const HMDT x, const HMDT y, const HMDT z, const HMDT ax, const HMDT ay, const HMDT az, const char *sch)

This is 3D version of the first functions. Here arrays ax, ay, az must be 3-ranged tensors with equal sizes and the length of hachures is proportional to \sqrtax^2+ay^2+az^2. See section VectL 3D sample, for sample code and picture.

Method on mglGraph (C++, Python): void VectL (const mglData &ax, const mglData &ay, const mglData &az, const char *sch="")

C function: void mgl_vectl_3d (HMGL gr, const HMDT ax, const HMDT ay, const HMDT az, const char *sch)

The same as previous with x, y equidistantly distributed in interval [Min, Max].