Struct WCS 

pub struct WCS { /* private fields */ }

Implementations

impl WCS

Main object structure descripting a WCS object Once created, the user can proceed two operation on it

• The projection of a (lon, lat) tuple onto the image space. Results are given in pixels
• The unprojection of a (x, y) tuple given in pixel coordinates onto the sphere. Results are given as a (lon, lat) tuple expressed in degrees

pub fn new(params: &WCSParams) -> Result<Self, Error>

pub fn img_dimensions(&self) -> &[i64]

Returns the dimensions of the image given by the NAXIS1 x NAXIS2 keyword

pub fn field_of_view(&self) -> (f64, f64)

pub fn proj(&self, lonlat: &LonLat) -> Option<ImgXY>

Project a (lon, lat) in ICRS

The result is given a (X, Y) tuple expressed in pixel coordinates.

Arguments

• lonlat: the 3D sphere vertex expressed as a (lon, lat) tuple given in degrees

pub fn unproj(&self, img_pos: &ImgXY) -> Option<LonLat>

Unproject a (X, Y) point to get a position on the sky in ICRS system

Arguments

• img_pos: the image space point expressed as a (X, Y) tuple given en pixels

pub fn coo_system(&self) -> &CooSystem

Get the coordinate system frame

Methods from Deref<Target = WCSProj>

pub fn proj_lonlat(&self, lonlat: &LonLat) -> Option<ImgXY>

Project a (lon, lat) given in ICRS frame to get its corresponding location on the image

The result is given a (X, Y) tuple expressed in pixel coordinates.

Arguments

• lonlat: a coo expressed as (lon, lat) tuple given in degrees and in ICRS system

pub fn proj_xyz(&self, xyz: &(f64, f64, f64)) -> Option<ImgXY>

pub fn unproj_xyz(&self, img_pos: &ImgXY) -> Option<XYZ>

pub fn unproj_lonlat(&self, img_pos: &ImgXY) -> Option<LonLat>

Unproject a (X, Y) point from the image space to get its corresponding location on the sphere

The result is (lon, lat) tuple expressed in degrees in ICRS

Arguments

• img_pos: the image space point expressed as a (X, Y) tuple given en pixels

pub fn coo_system(&self) -> &CooSystem

Getter of the coordinate system

Trait Implementations

impl Debug for WCS

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

Formats the value using the given formatter.

impl Deref for WCS

type Target = WCSProj

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.