3.9.6 Stem

These functions draw vertical lines from points to axis plane. The plots are drawn for each row if one of the data is the matrix. By any case the sizes of 1st dimension must be equal for all arrays x.nx=y.nx=z.nx. String pen specifies the color and style of line and marks (see section Line styles). By default (pen=NULL) solid line with color from palette is used (see section Pallete and colors). See also Area, Bars, Plot. See section Stem sample, for sample code and picture.

Method on mglGraph: void Stem (const mglData &x, const mglData &y, const mglData &z, const char *pen=NULL)

The function draws vertical lines from points {x[i], y[i], z[i]} down to z = Org.z.

Method on mglGraph: void Stem (const mglData &x, const mglData &y, const char *pen=NULL, float zVal=NAN)

The function draws vertical lines from points {x[i], y[i]} down to y = Org.y in plane z=zVal (default in plane z=Min.z).

Method on mglGraph: void Stem (const mglData &y, const char *pen=NULL, float zVal=NAN)

The function draws vertical lines from points {x[i], y[i]} down to y = Org.y in plane z=zVal (default in plane z=Min.z), where x[i] values are equidistantly distributed in interval [Min.x, Max.x].

Method on mglGraph: void Stem2 (const mglData &a, const char *pen=NULL, float zVal=NAN)

The function draws vertical lines from points {x[i], y[i]} down to y = Org.y in plane z=zVal (default in plane z=Min.z), where x=a(2*k,:), y=a(2*k+1,:), k \in 0 ... a.ny/2. This function is obsolete – use Stem() and SubData() functions instead.

Method on mglGraph: void Stem3 (const mglData &a, const char *pen=NULL)

The function draws vertical lines from points {x[i], y[i], z[i]} down to z = Org.z, where x=a(3*k,:), y=a(3*k+1,:), z=a(3*k+2,:), k \in 0 ... a.ny/3. This function is obsolete – use Stem() and SubData() functions instead.