In a Nut Shell:
Let z
= f(x,y)
represent the graph of a function.
Then level curves are
the set of all
points (x,y)
such that f(x,y)
= c where c is a given constant. Each value
of c
provides a new level curve.
If the function
represents temperature, T = f(x,y), then each level curve represents an
isothermal. If the function represents altitude, Z
= g(x,y),
then each level curve
represents an isocline. If the
function represents pressure, P = h(x,y), then
each level curve
represents an isobar.
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