pub fn differential_reflectivity_scale() -> DiscreteColorScaleExpand description
Returns a color scale for differential reflectivity (ZDR) data.
This divergent scale shows negative values (vertically-oriented particles) in blue/purple, near-zero in gray, and positive values (horizontally-oriented particles like large raindrops) in yellow/orange/red. Range: -2 to +6 dB.
| ZDR (dB) | Color | Meaning |
|---|---|---|
| -2 to -1 | Purple | Vertically oriented |
| -1 to 0 | Blue | Slightly vertical |
| 0 to 0.5 | Gray | Spherical particles |
| 0.5 to 1.5 | Light Green | Slightly oblate |
| 1.5 to 2.5 | Yellow | Oblate drops |
| 2.5 to 4 | Orange | Large oblate drops |
| 4 to 6 | Red | Very large drops/hail |