class Vips::Coding

‘:rad` pixels encode 3 float RGB as 4 uchar (Radiance coding)
* `:labq` pixels encode 3 float CIELAB values as 4 uchar
* `:none` pixels are not coded
useful to be able to manipulate images in the coded format.
However some file formats code pixels for compression, and sometimes it’s
Normally, pixels are uncoded and can be manipulated as you would expect.
How pixels are coded.