Struct EqualAreaCylindricalProjection 

pub struct EqualAreaCylindricalProjection { /* private fields */ }

Equal Area Cylindrical Projection

Classification: Cylindrical

Available forms: Forward and Inverse, spherical and ellipsoidal

Defined area: Global

Alias: cea

Domain: 2D

Input type: Geodetic coordinates

Output type: Projected coordinates

Projection String

+proj=cea

Named Specializations

The Equal Area Cylindrical projection is sometimes known under other names when instantiated with particular values of the lat_ts parameter:

• Lambert cylindrical equal-area: lat_ts = 0
• Behrmann: lat_ts = 30
• Gall-Peters: lat_ts = 45

Optional Parameters

• lat_ts: Latitude of true scale
• lon_0: Longitude of origin
• ellps: Ellipsoid
• R: Radius of the sphere
• k_0: Scaling factor
• x_0: False easting
• y_0: False northing

Note: lat_ts and k_0 are mutually exclusive. If lat_ts is specified, it is equivalent to setting k_0 to:

$$k_0 = \cos(lat_{ts}) / \sqrt{1 - e^2 \sin^2(lat_{ts})}$$

reference: “Cartographic Projection Procedures for the UNIX Environment- A User’s Manual” by Gerald I. Evenden, USGS Open File Report 90-284and Release 4 Interim Reports (2003)

Trait Implementations

impl Clone for EqualAreaCylindricalProjection

fn clone(&self) -> EqualAreaCylindricalProjection

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl CoordinateStep for EqualAreaCylindricalProjection

fn new(proj: Rc<RefCell<Proj>>) -> Self

Create a new Converter

fn forward<P: TransformCoordinates>(&self, p: &mut P)

forward conversion

fn inverse<P: TransformCoordinates>(&self, p: &mut P)

inverse conversion

impl Debug for EqualAreaCylindricalProjection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for EqualAreaCylindricalProjection

fn eq(&self, other: &EqualAreaCylindricalProjection) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ProjectCoordinates for EqualAreaCylindricalProjection

fn code(&self) -> i64

ESPG code for this projection

fn name(&self) -> &'static str

Projection name

fn names() -> &'static [&'static str]

Returns the list of canonical names for this projection. This is an associated function, similar to a static method.

fn datum_type() -> u8

get the datum type. Defaults to no datum

impl StructuralPartialEq for EqualAreaCylindricalProjection