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Wcs

fits_well

Struct Wcs 

Source 
pub struct Wcs {
    pub naxis: usize,
    pub ctype: Vec<String>,
    pub crval: Vec<f64>,
    pub crpix: Vec<f64>,
    pub unsupported_axes: Vec<usize>,
    /* private fields */
}
Expand description

A parsed world coordinate system for one (optionally alternate) axis set.

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§naxis: usize

Number of WCS axes.

§ctype: Vec<String>

CTYPEi strings.

§crval: Vec<f64>

CRVALi — world coordinate at the reference pixel.

§crpix: Vec<f64>

CRPIXi — reference pixel (1-based).

§unsupported_axes: Vec<usize>

Axes (0-based) whose non-linear transform is not evaluated — an unsupported projection (quad-cube/HEALPix) or a non-linear spectral algorithm (§8.3/§8.4). Wcs::pixel_to_world returns their intermediate world coordinate (the linear stage only), not a fully decoded celestial/spectral value.

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impl Wcs

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pub fn pixel_to_world(&self, pixel: &[f64]) -> Vec<f64>

Map 1-based pixel coordinates to world coordinates. Celestial axes return (α, δ) in degrees; other axes return CRVAL + the linear value.

§Panics

If pixel.len() != self.naxis. The coordinate count is a structural precondition (you know the WCS rank from Wcs::naxis), so a mismatch is a caller bug, not runtime data — hence an assert rather than a Result.

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pub fn world_to_pixel(&self, world: &[f64]) -> Vec<f64>

Map world coordinates back to 1-based pixel coordinates (the inverse of Wcs::pixel_to_world).

§Panics

If world.len() != self.naxis (see Wcs::pixel_to_world — the count is a caller-controlled precondition, not runtime data).

Trait Implementations§

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impl Clone for Wcs

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fn clone(&self) -> Wcs

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Wcs

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl Freeze for Wcs

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impl RefUnwindSafe for Wcs

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impl Send for Wcs

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impl Sync for Wcs

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impl Unpin for Wcs

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impl UnsafeUnpin for Wcs

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impl UnwindSafe for Wcs

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impl<T> Any for T
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Gets the TypeId of self. Read more
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🔬This is a nightly-only experimental API. (clone_to_uninit)
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Causes self to use its LowerExp implementation when Debug-formatted.
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Causes self to use its UpperExp implementation when Debug-formatted.
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