Crate nexrad_render

Expand description

Rendering functions for NEXRAD weather radar data.

This crate provides functions to render radar data into visual images. It converts radar moment data (reflectivity, velocity, etc.) into color-mapped images that can be saved to common formats like PNG.

§Example

use nexrad_render::{render_radials, Product, RenderOptions, get_nws_reflectivity_scale};

let options = RenderOptions::new(800, 800);
let image = render_radials(
    sweep.radials(),
    Product::Reflectivity,
    &get_nws_reflectivity_scale(),
    &options,
).unwrap();

// Save directly to PNG
image.save("radar.png").unwrap();

§Crate Boundaries

This crate provides visualization and rendering with the following responsibilities and constraints:

§Responsibilities

Render radar data to images (image::RgbaImage)
Apply color scales to moment data
Handle geometric transformations (polar to Cartesian coordinates)
Consume nexrad-model types (Radial, MomentData)

§Constraints

No data access or network operations
No binary parsing or decoding

This crate can be used standalone or through the nexrad facade crate (re-exported via the render feature, which is enabled by default).

Modules§

result: Result and error types for NEXRAD rendering operations.

Structs§

Color: An RGBA color with components in the range 0.0 to 1.0.
ColorLookupTable: A pre-computed lookup table for O(1) color lookups.
ColorScaleLevel: A single level in a discrete color scale.
DiscreteColorScale: A discrete color scale that maps value ranges to colors.
RenderOptions: Options for rendering radar radials.

Enums§

Product: Radar data products that can be rendered.

Functions§

get_correlation_coefficient_scale: Returns a color scale for correlation coefficient (CC/RhoHV) data.
get_default_scale: Returns the default color scale for a given product.
get_differential_phase_scale: Returns a color scale for differential phase (PhiDP) data.
get_differential_reflectivity_scale: Returns a color scale for differential reflectivity (ZDR) data.
get_nws_reflectivity_scale: Returns the standard NWS (National Weather Service) reflectivity color scale.
get_product_value_range: Returns the value range (min, max) for a given product.
get_specific_diff_phase_scale: Returns a color scale for specific differential phase (KDP) data.
get_spectrum_width_scale: Returns a color scale for spectrum width data.
get_velocity_scale: Returns a color scale for radial velocity data.
render_radials: Renders radar radials to an RGBA image.
render_radials_default: Renders radar radials using the default color scale for the product.

Type Aliases§

RgbaImage: Sendable Rgb + alpha channel image buffer