The listcontplot3d function creates a 3-D contour plot of a grid (list of lists or Matrix) of numeric values.

Remaining arguments are interpreted as plot options. See plot3d[option] for a list of possible options.

Option levels is provided as a synonym of the option contours. Either of these specifies the number of contours to draw, the default being eight.

The filledregions=true option can be specified to obtain a filled contour plot. The coloring option can, in this case, be used to specify a gradation in color, or color range. The default is a color range from red to yellow. To specify a color range, use the form coloring=[a,b], where a and b refer to colors recognized by plot3d. See plot[color] for an explanation of colors.

Data saved in external files may be imported into a Matrix with the ImportMatrix command and passed to listcontplot3d.  

$\mathrm{with}\left(\mathrm{plots}\right)\:$

$\mathrm{listcontplot3d}\left(\left[\mathrm{seq}\left(\left[\mathrm{seq}\left(\sin \left(\frac{\frac{x}{5}y}{5}\right)\,x=-15..15\right)\right]\,y=-15..15\right)\right]\right)$

$\mathrm{listcontplot3d}\left(\mathrm{Matrix}\left(\left[\mathrm{seq}\left(\left[\mathrm{seq}\left(\sin \left(\frac{\left(i-15\right)\left(j-10\right)}{20\mathrm{\pi }}\right)\,i=1..30\right)\right]\,j=1..20\right)\right]\right)\right)$

$\mathrm{listcontplot3d}\left(\left[\mathrm{seq}\left(\left[\mathrm{seq}\left(\sin \left(\frac{\left(i-15\right)\left(j-10\right)}{20\mathrm{\pi }}\right)\,i=1..30\right)\right]\,j=1..20\right)\right]\,\mathrm{filledregions}=\mathrm{true}\right)$

The G parameter was updated in Maple 15.