Isolines Art Illustration: The
Golden Gate Bridge
The Golden Gate Bridge is a suspension bridge spanning the Golden Gate strait, the mile-wide,
three-mile-long channel between San Francisco Bay and the Pacific Ocean.
It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers.
Golden Gate Bridge.
A contour line (also isoline, isopleth, or isarithm) of a function of two variables
is a curve along which the function has a constant value.
Isolines usually have a parallel trend.