The remaining arguments are options specified as equations of the form option = value.  The matrixplot specific options are:

dimension=d

Where d is 2 or 3, and defaults to 3

cellstyle=s

Where s is either discrete or continuous, the default in three dimensions is continuous and in two dimensions is discrete. The older syntax heights=histogram is equivalent to cellstyle=discrete.

gap=r

The value of r is a real number between 0 and 1 and is only used for discrete style plots.

color=F

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.

colorbar=c

where c is true, false or a list of color bar options. The default is true for two-dimensional plots, and false for three dimensions. The options supported are described in plot/colorbar.

Other options are treated as general plot options. These include axes, view, title, labels, style, projection, and orientation.  See plot3d/option and plot/option.

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 result of a call to matrixplot is a plot structure which can be rendered by the plotting device. You can assign a plot to a variable, save it in a file, then read it back in for redisplay.  See plot3d/structure for more information.

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

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

$A≔\mathrm{HilbertMatrix}\left(8\right)\:$$B≔\mathrm{ToeplitzMatrix}\left(\left[1\,2\,3\,4\,-4\,-3\,-2\,-1\right]\,\mathrm{symmetric}\right)\:$

$\mathrm{matrixplot}\left(A·B\right)$

$\mathrm{matrixplot}\left(A·B\,'\mathrm{dimension}'=2\right)$

$\mathrm{matrixplot}\left(A+B\,'\mathrm{cellstyle}'='\mathrm{discrete}'\,'\mathrm{axes}'='\mathrm{boxed}'\right)$

$\mathrm{matrixplot}\left(A+B\,'\mathrm{cellstyle}'='\mathrm{discrete}'\,'\mathrm{gap}'=0.25\,'\mathrm{axes}'='\mathrm{frame}'\right)$

$\mathrm{matrixplot}\left(A+B\,'\mathrm{dimension}'=2\,'\mathrm{cellstyle}'='\mathrm{continuous}'\right)$

$F≔\left(x\,y\right)\mapsto \sin \left(y\cdot x\right)\:$

$\mathrm{matrixplot}\left(A+B\,'\mathrm{cellstyle}'='\mathrm{discrete}'\,'\mathrm{gap}'=0.25\,'\mathrm{color}'=F\,'\mathrm{axes}'='\mathrm{frame}'\right)$

$L≔\mathrm{HilbertMatrix}\left(4\,5\right)$

$L≔\left[\begin{array}{ccccc}1& \frac{1}{2}& \frac{1}{3}& \frac{1}{4}& \frac{1}{5}\\ \frac{1}{2}& \frac{1}{3}& \frac{1}{4}& \frac{1}{5}& \frac{1}{6}\\ \frac{1}{3}& \frac{1}{4}& \frac{1}{5}& \frac{1}{6}& \frac{1}{7}\\ \frac{1}{4}& \frac{1}{5}& \frac{1}{6}& \frac{1}{7}& \frac{1}{8}\end{array}\right]$

$\mathrm{matrixplot}\left(L\right)$

$Y≔\mathrm{Matrix}\left(20\,3\,\left(i\,j\right)\mapsto \mathrm{evalf}\left(1+\sin \left(\frac{i\cdot j}{\mathrm{\pi }}\right)\right)\,\mathrm{datatype}=\mathrm{float}\left[8\right]\right)\:$

$\mathrm{plots}:-\mathrm{matrixplot}\left(Y\,'\mathrm{cellstyle}'='\mathrm{discrete}'\,\mathrm{gap}=0.5\,\mathrm{`=`}\left(\mathrm{color}\,\left(x\,y\right)\mapsto 1.2-\frac{y}{3}\right)\,\mathrm{orientation}=\left[-55\,55\,0\right]\,\mathrm{labels}=\left[''''\,''''\,''''\right]\right)$

$\mathrm{matrixplot}\left(A\right)$

The plots[matrixplot] command was updated in Maple 2024.

The dimension, cellstyle and colorbar options were introduced in Maple 2024.

For more information on Maple 2024 changes, see Updates in Maple 2024.