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_model::data::Product;
use nexrad_render::{render_radials, RenderOptions, nws_reflectivity_scale};

let options = RenderOptions::new(800, 800);
let image = render_radials(
    sweep.radials(),
    Product::Reflectivity,
    &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.
ColorStop: A color stop for a continuous color scale.
ContinuousColorScale: A continuous color scale that linearly interpolates between color stops.
DiscreteColorScale: A discrete color scale that maps value ranges to colors.
PointQuery: Result of querying a data value at a specific point.
RenderMetadata: Metadata describing the pixel-to-coordinate mapping of a rendered image.
RenderOptions: Options for rendering radar radials.
RenderResult: The result of a render operation.

Enums§

ColorScale: A color scale that can be either discrete or continuous.
Interpolation: Interpolation method for rendering radar data.
Product: Identifies a radar data product (moment type).

Functions§

clutter_filter_power_scale: Returns a color scale for clutter filter power (CFP) data.
correlation_coefficient_scale: Returns a color scale for correlation coefficient (CC/RhoHV) data.
default_color_scale: Returns the default color scale for a product, wrapped in a ColorScale enum.
default_scale: Returns the default color scale for a given product.
differential_phase_scale: Returns a color scale for differential phase (PhiDP) data.
differential_reflectivity_scale: Returns a color scale for differential reflectivity (ZDR) data.
nws_reflectivity_scale: Returns the standard NWS (National Weather Service) reflectivity color scale.
render_cartesian: Renders a CartesianField (geographic grid) to an image with metadata.
render_radials: Renders radar radials to an RGBA image.
render_radials_default: Renders radar radials using the default color scale for the product.
render_sweep: Renders a SweepField (polar grid) to an image with metadata.
render_vertical: Renders a VerticalField (RHI / cross-section display) to an image with metadata.
spectrum_width_scale: Returns a color scale for spectrum width data.
velocity_scale: Returns a color scale for radial velocity data.

Type Aliases§

RgbaImage: Sendable Rgb + alpha channel image buffer