3.9.5 Region

These functions fill area between 2 curves. 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=y1.nx=y2.nx and all dimensions of arrays y1 and y2 must be equal too. String pen specifies the color (see section Line styles). By default (pen="") color from palette is used (see section Pallete and colors). Also you can use gradient filling if number of specified colors is equal to 2*number of curves. See also Area, Bars, Stem. See section Region sample, for sample code and picture.

Method on mglGraph (C++, Python): void Region (const mglData &x, const mglData &y1, const mglData &y2, const char *pen="", float zVal=NAN, bool inside=true)

C function: void mgl_region_xy (HMGL gr, const HMDT x, const HMDT y1, const HMDT y2, const char *pen, int inside)

The function fills area between curves {x[i], y1[i]} and {x[i], y2[i]} at z=zVal. Parameter inside=false set to fill are with y1<y<y2 else the area with y2<y<y1 will be also filled.

Method on mglGraph (C++, Python): void Region (const mglData &y1, const mglData &y2, const char *pen="", float zVal=NAN, bool inside=true)

C function: void mgl_region (HMGL gr, const HMDT y1, const HMDT y2, const char *pen, int inside)

The function fills area between curves {x[i], y1[i]} and {x[i], y2[i]}, where x[i] values are equidistantly distributed in interval [Min.x, Max.x] at z=zVal.