Color maps provide a graphical means of producing two-dimensional representations of (x,y,z)
z(x,y)
(x,y)
z
c_1
z
1.
In the following simple example, a color map of the complex argument of the Riemann zeta function ζ(z)
(x,y)
x
y
c_1
c_1
c_1
π
c_1
Footnotes