All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`double`	`dLatDy_RAD(double y)`	Derivative of lat_RAD with respect to dy (i.e.
`double`	`latToY(double lat_RAD)`
`double`	`lonToX(double lon_RAD)`
`double`	`maxDlatDy_RAD(double yMin, double yMax)`	Maximum value of dlat/dy over all y values in [yMin,yMax].
`double`	`maxUsableY()`
`double`	`minUsableY()`
`double`	`xToLon_RAD(double x)`
`double`	`yToLat_RAD(double y)`

dLatDy_RAD
```
double dLatDy_RAD(double y)
```
Derivative of lat_RAD with respect to dy (i.e. dlat/dy), at the given y.

double maxDlatDy_RAD(double yMin,
                     double yMax)

Maximum value of dlat/dy over all y values in [yMin,yMax].

Interface NormalCylindricalProjection