Plot a dense matrix:

Plot a sparse matrix:

Plot a nonrectangular "matrix", with missing entries transparent:

Negative entries are shown in cool colors, positive entries in warm colors, and zeros in white:

Entries near zero are shown in a shade of gray; entries very close to zero may be shown in white:

Complex numbers are shown based on their real parts:

None is interpreted as a missing value and displayed using transparency:

Symbolic values other than None are shown in dark red:

Colors are shown darker for very sparse matrices to make entries more visible:

Show a matrix with irrational and arbitrary-precision entries:

Add labels:

Give explicit color directives to specify colors for individual cells:

Use a named color gradient:

Use a black-and-white color function to highlight the sparse structure of a matrix:

Use a custom color function with blue colors for negative values and red colors for positive values:

Use ColorRules to color different values:

Use both ColorRules and ColorFunction to color elements, giving priority to ColorRules:

Use Mesh and MeshStyle to provide an overlay mesh:

Use a plot theme:

Make all cells square:

Use a different aspect ratio:

Background is normally visible only around the edges:

The background "shows through" whenever an explicit entry is None:

By default, the clipped values are colored vibrant red and blue:

Use explicit colors for the clipped values:

Use None to indicate no style, showing the background in those cells:

Use an explicit color function:

Use a pure function as the color function:

Use a named color gradient from ColorData:

If the color function is undefined for some value, then a dark red is substituted:

In this case, the color is defined for all the values:

For complex matrices, the real part is used for the color function:

By default, a nonlinear scaling of entries is used to differentiate values over a wide range:

With ColorFunctionScaling->False, entries are not scaled:

With ColorFunctionScaling->False, MatrixPlot behaves like ArrayPlot:

ColorFunctionScaling has no effect on ColorRules:

Specify color rules for explicit values or patterns:

Implement a "default color" by adding a rule for _:

The array can contain symbolic values:

Use any patterns in ColorRules:

Rules are used in the order given:

ColorRules can be used together with ColorFunction and has higher priority:

Reverse the order of columns:

By default, automatic methods are used to downsample large and/or sparse matrices:

Without downsampling, the entries are less visible:

Explicitly set downsampling values for MaxPlotPoints:

The visual appearance in the resulting plot is also affected by the choice of ColorFunction:

Insert mesh lines between all cells:

Insert 19 row mesh lines and 1 column mesh line:

Use a sequence of colors for the mesh lines:

Make the mesh pink:

Plot all elements:

Plot only elements with values from 0 to 1; clip the rest:

The first two entries in PlotRange specify the range of rows and columns to include:

Use a theme with simple ticks and grid lines in a bright color scheme:

Turn off the grid lines: