Plot 3D Grid Data as Heat Map using gnuplot

问题

Assume we have a 5x4x3 3D grid, where each cell has a value:

0.5523    0.0495    0.1465    0.5386
0.6299    0.4896    0.1891    0.6952
0.0320    0.1925    0.0427    0.4991
0.6147    0.1231    0.6352    0.5358
0.3624    0.2055    0.2819    0.4452

0.1239    0.2085    0.9479    0.6210
0.4904    0.5650    0.0821    0.5737
0.8530    0.6403    0.1057    0.0521
0.8739    0.4170    0.1420    0.9312
0.2703    0.2060    0.1665    0.7287

0.7378    0.8589    0.1339    0.3329
0.0634    0.7856    0.0309    0.4671
0.8604    0.5134    0.9391    0.6482
0.9344    0.1776    0.3013    0.0252
0.9844    0.3986    0.2955    0.8422

How can I achieve a plot in gnuplot that is similar to this plot achieved in matlab using patch? Note that the grid cells has an alpha value of 0.8.

来源：https://stackoverflow.com/questions/29088260/plot-3d-grid-data-as-heat-map-using-gnuplot