Color Gradients¶

Overview¶

A number of pre-defined color gradients are available for gempa modules. These gradients can be used when displaying color-coded values such as grids, spectrograms or heat-maps. The following is an overview of pre-defined gradients along with the name of the gradient which can be used in configurations. The gradients are grouped into:

Full spectrum
Dark to yellow
Black and white
Single color
Three color

List of Gradients¶

Full spectrum¶

Gradients that use the full spectrum of colors.

Default¶

Configuration name: Default

overview of the Default color-gradient

example spectrogram using the Default gradient — Example spectrogram using the “Default” color-gradient.¶

Spectrum¶

Configuration name: Spectrum

overview of the Spectrum color-gradient

example spectrogram using the Spectrum gradient — Example spectrogram using the “Spectrum” color-gradient.¶

Circle¶

Configuration name: Circle

overview of the Circle color-gradient

example spectrogram using the Circle gradient — Example spectrogram using the “Circle” color-gradient.¶

Dark to yellow¶

Gradients optically resembling fire with increased energy beeing displayed by bright yellow tones.

BlackBody¶

Configuration name: BlackBody

overview of the BlackBody color-gradient

example spectrogram using the BlackBody gradient — Example spectrogram using the “BlackBody” color-gradient.¶

Inferno¶

Configuration name: Inferno

overview of the Inferno color-gradient

example spectrogram using the Inferno gradient — Example spectrogram using the “Inferno” color-gradient.¶

Plasma¶

Configuration name: Plasma

overview of the Plasma color-gradient

example spectrogram using the Plasma gradient — Example spectrogram using the “Plasma” color-gradient.¶

Black and white¶

For a maximum contrast there are these two gradients that just use black and white.

BlackWhite¶

Configuration name: BlackWhite

overview of the BlackWhite color-gradient

example spectrogram using the BlackWhite gradient — Example spectrogram using the “BlackWhite” color-gradient.¶

WhiteBlack¶

Configuration name: WhiteBlack

overview of the WhiteBlack color-gradient

example spectrogram using the WhiteBlack gradient — Example spectrogram using the “WhiteBlack” color-gradient.¶

Single color¶

The single color gradients have the same benefit as the black and white gradients and are of a high contrast.

BluePurple¶

Configuration name: BuPu

overview of the BluePurple color-gradient

example spectrogram using the BluePurple gradient — Example spectrogram using the “BluePurple” color-gradient.¶

Blues¶

Configuration name: Blues

overview of the Blues color-gradient

example spectrogram using the Blues gradient — Example spectrogram using the “Blues” color-gradient.¶

PurpleRed¶

Configuration name: PuRd

overview of the PurpleRed color-gradient

example spectrogram using the PurpleRed gradient — Example spectrogram using the “PurpleRed” color-gradient.¶

Three color¶

Gradients allowing to distinguish more details than single colored.

RedYellowBlue¶

Configuration name: RdYlBu

overview of the RedYellowBlue color-gradient

example spectrogram using the RedYellowBlue gradient — Example spectrogram using the “RedYellowBlue” color-gradient.¶

Parula¶

Configuration name: Parula

overview of the Parula color-gradient

example spectrogram using the Parula gradient — Example spectrogram using the “Parula” color-gradient.¶

Viridis¶

Configuration name: Viridis

overview of the Viridis color-gradient

example spectrogram using the Viridis gradient — Example spectrogram using the “Viridis” color-gradient.¶