3-D plot with z values determined by a matrix
The matrixplot function defines a three-dimensional graph where the x and y coordinates represent the row and column indices of A, respectively. The z values are the corresponding entries of A.
The remaining arguments are options specified as equations of the form option = value. For example:
The plot is drawn in the form of a three-dimensional histogram.
The value of r is a real number between 0 and 1.
The color of the plot is given by F, where F is a color specification as described in the plot/color help page. F can also be a two-argument procedure returning a single real value to be interpreted as a hue rather than RGB value.
Other options include most of those found with plot3d. These include axes, view, title, labels, style, projection, and orientation. See plot3d/option.
The result of a call to matrixplot is a PLOT3D structure which can be rendered by the plotting device. You can assign a PLOT3D value to a variable, save it in a file, then read it back in for redisplay. See plot3d/structure for more information.
A ≔ HilbertMatrix⁡8:B ≔ ToeplitzMatrix⁡1,2,3,4,−4,−3,−2,−1,symmetric:
F ≔ x,y→sin⁡x⁢y:
L ≔ HilbertMatrix⁡4,5
Y ≔ Matrix⁡20,3,i,j→evalf⁡1+sin⁡i⁢jPi,datatype=float8:
The command to create the plot from the Plotting Guide is
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