Edit spectrum not work

[Lucstay11]

For some unexplained reason, None of these changes affect the default spectrum color...

Spectrum.js under src/webUI/webroot has

// Colours
this.colourIndex = 0;
this.colourMap = colourMaps[this.colourIndex]; // map for spectrogram only

alternatively in colourmap.js reorder the map to give your prefered one at index zero.
var colourMaps = [binary, binary_inverse, turbo, fosphor, viridis, inferno, magma, jet];

And how could I do to activate by default the grad option at the launch of the spectrum?

[naj1024]

Think your browser cache needs a refresh.

// Colours
this.colourIndex = 3;
this.spectrumGradient = true;

Above two changes worked for me.

[Lucstay11]

It work! Yes the Chrome browser cache not clearing all the time. Thanks

[naj1024]

your welcome