Cylindrical Equidistant Projection

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

The Map Projection having transformation equations

$\displaystyle x$	$\textstyle =$	$\displaystyle (\lambda-\lambda_0)\cos\phi_1$	(1)
$\displaystyle y$	$\textstyle =$	$\displaystyle \phi,$	(2)

and the inverse Formulas are

$\displaystyle \phi$	$\textstyle =$	$\displaystyle y$	(3)
$\displaystyle \lambda$	$\textstyle =$	$\displaystyle \lambda_0+{x\over\cos\phi_1}.$	(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. 90-91, 1987.