Attribution for magics_presets.json
====================================

The colour ramps and parameter/label associations in `magics_presets.json`
are derived from the ECMWF Magics meteorological plotting library:

    https://github.com/ecmwf/magics
    Copyright 1996-2016 ECMWF.
    Licensed under the Apache License, Version 2.0.
    http://www.apache.org/licenses/LICENSE-2.0

The full text of the Apache License, Version 2.0 is bundled alongside this
notice as `LICENSE-APACHE-2.0.txt`.

Only Magics' colour *data* and the parameter-to-palette/label associations were
extracted (from `share/magics/styles/default/palettes.json` and
`contours.json`). No Magics source code is included or used at runtime.

Modifications made when deriving this file:
- colours converted to hex (from Magics' rgb()/rgba() and named-colour forms);
- out-of-range component values (a stray `256`) clamped to 255;
- the exact numeric contour levels are omitted (they are not part of Magics'
  open data), so the cleopatra presets built from this file auto-range instead.

Regenerated by tools; the source ref and generation date are recorded in the
`_meta` block of `magics_presets.json`.
