info mathgl

4.12 3D plotting

These functions perform plotting of 3D data. 3D means that data depend from 3 independent parameters like matrix f(x_i,y_j,z_k), i=1...n, j=1...m, k=1...l. By default (if absent) values of x, y, z are equidistantly distributed in axis range. The minor dimensions of arrays x, y, z, a should be equal x.nx=a.nx && y.nx=a.ny && z.nz=a.nz or x.nx=y.nx=z.nx=a.nx && x.ny=y.ny=z.ny=a.ny && x.nz=y.nz=z.nz=a.nz. Arrays x, y and z can be vectors (not matrices as a). String sch sets the color scheme (see Color scheme) for plot. String opt contain command options (see Command options). See section 3D samples, for sample code and picture.

MGL command: surf3 adat val ['sch'='']
MGL command: surf3 xdat ydat zdat adat val ['sch'='']
Method on mglGraph: void Surf3 (mreal val, const mglDataA &a, const char *sch="", const char *opt="")
Method on mglGraph: void Surf3 (mreal val, const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", const char *opt="")
C function: void mgl_surf3_val (HMGL gr, mreal val, HCDT a, const char *sch, const char *opt)
C function: void mgl_surf3_xyz_val (HMGL gr, mreal val, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, const char *opt): The function draws isosurface plot for 3d array specified parametrically a[i,j,k](x[i,j,k], y[i,j,k], z[i,j,k]) at a(x,y,z)=val. If string contain ‘#’ then wire plot is produced. If string sch have symbol ‘.’ then plot by dots is produced. Note, that there is possibility of incorrect plotting due to uncertainty of cross-section defining if there are two or more isosurface intersections inside one cell. See also cloud, dens3, surf3c, surf3a, axial. See section Surf3 sample, for sample code and picture.

MGL command: surf3 adat ['sch'='']
MGL command: surf3 xdat ydat zdat adat ['sch'='']
Method on mglGraph: void Surf3 (const mglDataA &a, const char *sch="", const char *opt="")
Method on mglGraph: void Surf3 (const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", const char *opt="")
C function: void mgl_surf3 (HMGL gr, HCDT a, const char *sch, const char *opt)
C function: void mgl_surf3_xyz (HMGL gr, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, const char *opt): Draws num-th uniformly distributed in color range isosurfaces for 3d data. Here num is equal to parameter value in options opt (default is 3).

MGL command: cloud adat ['sch'='']
MGL command: cloud xdat ydat zdat adat ['sch'='']
Method on mglGraph: void Cloud (const mglDataA &a, const char *sch="", const char *opt="")
Method on mglGraph: void Cloud (const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", const char *opt="")
C function: void mgl_cloud (HMGL gr, HCDT a, const char *sch, const char *opt)
C function: void mgl_cloud_xyz (HMGL gr, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, const char *opt): The function draws cloud plot for 3d data specified parametrically a[i,j,k](x[i,j,k], y[i,j,k], z[i,j,k]). This plot is a set of cubes with color and transparency proportional to value of a. The resulting plot is like cloud – low value is transparent but higher ones are not. The number of plotting cells depend on meshnum. If string sch contain symbol ‘.’ then lower quality plot will produced with much low memory usage. If string sch contain symbol ‘i’ then transparency will be inversed, i.e. higher become transparent and lower become not transparent. See also surf3, meshnum. See section Cloud sample, for sample code and picture.

MGL command: dens3 adat ['sch'='' sval=-1]
MGL command: dens3 xdat ydat zdat adat ['sch'='' sval=-1]
Method on mglGraph: void Dens3 (const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
Method on mglGraph: void Dens3 (const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
C function: void mgl_dens3 (HMGL gr, HCDT a, const char *sch, mreal sVal, const char *opt)
C function: void mgl_dens3_xyz (HMGL gr, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, mreal sVal, const char *opt): The function draws density plot for 3d data specified parametrically a[i,j,k](x[i,j,k], y[i,j,k], z[i,j,k]). Density is plotted at slice sVal in direction {‘x’, ‘y’, ‘z’} if sch contain corresponding symbol (by default, ‘y’ direction is used). If string stl have symbol ‘#’ then grid lines are drawn. See also cont3, contf3, dens, grid3. See section Dens3 sample, for sample code and picture.

MGL command: cont3 vdat adat ['sch'='' sval=-1]
MGL command: cont3 vdat xdat ydat zdat adat ['sch'='' sval=-1]
Method on mglGraph: void Cont3 (const mglDataA &v, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
Method on mglGraph: void Cont3 (const mglDataA &v, const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
C function: void mgl_cont3_val (HMGL gr, HCDT v, HCDT a, const char *sch, mreal sVal, const char *opt)
C function: void mgl_cont3_xyz_val (HMGL gr, HCDT v, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, mreal sVal, const char *opt): The function draws contour plot for 3d data specified parametrically a[i,j,k](x[i,j,k], y[i,j,k], z[i,j,k]). Contours are plotted for values specified in array v at slice sVal in direction {‘x’, ‘y’, ‘z’} if sch contain corresponding symbol (by default, ‘y’ direction is used). If string sch have symbol ‘#’ then grid lines are drawn. If string sch have symbol ‘t’ or ‘T’ then contour labels will be drawn below (or above) the contours. See also dens3, contf3, cont, grid3. See section Cont3 sample, for sample code and picture.

MGL command: cont3 adat ['sch'='' sval=-1]
MGL command: cont3 xdat ydat zdat adat ['sch'='' sval=-1]
Method on mglGraph: void Cont3 (const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="", const char *opt="")
Method on mglGraph: void Cont3 (const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
C function: void mgl_cont3 (HMGL gr, HCDT a, const char *sch, mreal sVal, const char *opt)
C function: void mgl_cont3_xyz (HMGL gr, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, mreal sVal, const char *opt): The same as previous with vector v of num-th elements equidistantly distributed in color range. Here num is equal to parameter value in options opt (default is 7).

MGL command: contf3 vdat adat ['sch'='' sval=-1]
MGL command: contf3 vdat xdat ydat zdat adat ['sch'='' sval=-1]
Method on mglGraph: void Contf3 (const mglDataA &v, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
Method on mglGraph: void Contf3 (const mglDataA &v, const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
C function: void mgl_contf3_val (HMGL gr, HCDT v, HCDT a, const char *sch, mreal sVal, const char *opt)
C function: void mgl_contf3_xyz_val (HMGL gr, HCDT v, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, mreal sVal, const char *opt): The function draws solid (or filled) contour plot for 3d data specified parametrically a[i,j,k](x[i,j,k], y[i,j,k], z[i,j,k]). Contours are plotted for values specified in array v at slice sVal in direction {‘x’, ‘y’, ‘z’} if sch contain corresponding symbol (by default, ‘y’ direction is used). If string sch have symbol ‘#’ then grid lines are drawn. See also dens3, cont3, contf, grid3. See section ContF3 sample, for sample code and picture.

MGL command: contf3 adat ['sch'='' sval=-1]
MGL command: contf3 xdat ydat zdat adat ['sch'='' sval=-1]
Method on mglGraph: void Contf3 (const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="", const char *opt="")
Method on mglGraph: void Contf3 (const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
C function: void mgl_contf3 (HMGL gr, HCDT a, const char *sch, mreal sVal, const char *opt)
C function: void mgl_contf3_xyz (HMGL gr, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, mreal sVal, const char *opt): The same as previous with vector v of num-th elements equidistantly distributed in color range. Here num is equal to parameter value in options opt (default is 7).

MGL command: grid3 adat ['sch'='' sval=-1]
MGL command: grid3 xdat ydat zdat adat ['sch'='' sval=-1]
Method on mglGraph: void Grid3 (const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
Method on mglGraph: void Grid3 (const mglDataA &x, const mglDataA &y, const mglDataA &z, const mglDataA &a, const char *sch="", mreal sVal=-1, const char *opt="")
C function: void mgl_grid3 (HMGL gr, HCDT a, const char *sch, mreal sVal, const char *opt)
C function: void mgl_grid3_xyz (HMGL gr, HCDT x, HCDT y, HCDT z, HCDT a, const char *sch, mreal sVal, const char *opt): The function draws grid for 3d data specified parametrically a[i,j,k](x[i,j,k], y[i,j,k], z[i,j,k]). Grid is plotted at slice sVal in direction {‘x’, ‘y’, ‘z’} if sch contain corresponding symbol (by default, ‘y’ direction is used). See also cont3, contf3, dens3, grid2, meshnum.

MGL command: beam tr g1 g2 adat rval ['sch'='' flag=0 num=3]
Method on mglGraph: void Beam (const mglDataA &tr, const mglDataA &g1, const mglDataA &g2, const mglDataA &a, mreal r, const char *stl="", int flag=0, int num=3)
Method on mglGraph: void Beam (mreal val, const mglDataA &tr, const mglDataA &g1, const mglDataA &g2, const mglDataA &a, mreal r, const char *stl="", int flag=0)
C function: void mgl_beam (HMGL gr, HCDT tr, HCDT g1, HCDT g2, HCDT a, mreal r, const char *stl, int flag, int num)
C function: void mgl_beam_val (HMGL gr, mreal val, HCDT tr, HCDT g1, HCDT g2, HCDT a, mreal r, const char *stl, int flag): Draws the isosurface for 3d array a at constant values of a=val. This is special kind of plot for a specified in accompanied coordinates along curve tr with orts g1, g2 and with transverse scale r. Variable flag is bitwise: ‘0x1’ - draw in accompanied (not laboratory) coordinates; ‘0x2’ - draw projection to \rho-z plane; ‘0x4’ - draw normalized in each slice field. The x-size of data arrays tr, g1, g2 must be nx>2. The y-size of data arrays tr, g1, g2 and z-size of the data array a must be equal. See also surf3.

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