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Sinusoidal Projection

\begin{figure}\begin{center}\BoxedEPSF{maps/sinu.epsf scaled 600}\end{center}\end{figure}

An equal Area Map Projection.

$\displaystyle x$ $\textstyle =$ $\displaystyle (\lambda-\lambda_0)\cos\phi$ (1)
$\displaystyle y$ $\textstyle =$ $\displaystyle \phi.$ (2)

The inverse Formulas are
$\displaystyle \phi$ $\textstyle =$ $\displaystyle y$ (3)
$\displaystyle \lambda$ $\textstyle =$ $\displaystyle \lambda_0+{x\over\cos\phi}.$ (4)


References

Snyder, J. P. Map Projections--A Working Manual. U. S. Geological Survey Professional Paper 1395. Washington, DC: U. S. Government Printing Office, pp. 243-248, 1987.




© 1996-9 Eric W. Weisstein
1999-05-26