Struct LambertConformalConicProjection 

pub struct LambertConformalConicProjection<const C: i64> { /* private fields */ }

Lambert Conformal Conic

Lambert Conformal Conic projection (LCC) is a conic map projection used for aeronautical charts, portions of the State Plane Coordinate System, and many national and regional mapping systems. It is one of seven projections introduced by Johann Heinrich Lambert in 1772.

It has several different forms: with one and two standard parallels (referred to as 1SP and 2SP in EPSG guidance notes). Additionally we provide “2SP Michigan” form which is very similar to normal 2SP, but with a scaling factor on the ellipsoid (given as k_0 parameter). It is implemented as per EPSG Guidance Note 7-2 (version 54, August 2018, page 25). It is used in a few systems in the EPSG database which justifies adding this otherwise non-standard projection.

Classification: Conformal conic

Available forms: Forward and inverse, spherical and ellipsoidal

• One or two standard parallels (1SP and 2SP).
• “LCC 2SP Michigan” form can be used by setting the +k_0 parameter to specify ellipsoid scale.

Defined area: Best for regions predominantly east-west in extent and located in the middle north or south latitudes.

Alias: lcc

Domain: 2D

Input type: Geodetic coordinates

Output type: Projected coordinates

Projection String

+proj=lcc +lon_0=-90 +lat_1=33 +lat_2=45

Required Parameters

• +lat_1: Latitude of the first standard parallel.

Optional Parameters

• +lon_0: Longitude of projection center. Defaults to 0.
• +lat_0: Latitude of projection center. Defaults to 0.
• +lat_2: Latitude of the second standard parallel.
• +ellps: Ellipsoid. Defaults to WGS84.
• +R: Radius of the sphere.
• +x_0: False easting. Defaults to 0.
• +y_0: False northing. Defaults to 0.
• +k_0: Scale factor at natural origin (for LCC 1SP) or ellipsoid scale factor (for LCC 2SP Michigan). Defaults to 1.0.

Further reading

• Wikipedia on Lambert Conformal Conic
• Wolfram Mathworld on Lambert Conformal Conic
• John P. Snyder “Map projections: A working manual”
• ArcGIS documentation on “Lambert Conformal Conic”
• EPSG Guidance Note 7-2

Trait Implementations

impl<const C: i64> Clone for LambertConformalConicProjection<C>

fn clone(&self) -> LambertConformalConicProjection<C>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<const C: i64> CoordinateStep for LambertConformalConicProjection<C>

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<const C: i64> Debug for LambertConformalConicProjection<C>

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

Formats the value using the given formatter.

impl<const C: i64> PartialEq for LambertConformalConicProjection<C>

fn eq(&self, other: &LambertConformalConicProjection<C>) -> 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<const C: i64> ProjectCoordinates for LambertConformalConicProjection<C>

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<const C: i64> StructuralPartialEq for LambertConformalConicProjection<C>