Hi,
You can access the GradientEditorItem
(http://www.pyqtgraph.org/documentation/graphicsItems/gradienteditoritem.html)
component directly and set one of the default colormaps by:
histogram.gradient.loadPreset('thermal')
You can also make your own custom gradient with something like:
histogram.gradient.restoreState({"mode": "rgb",
"ticks": [(0.00, (0, 0, 0)),
(0.05, (0, 0, 128)),
(0.50, (185, 0 , 0)),
(0.75, (255, 220, 0)),
(1.00, (255, 255, 255))]})
Patrick
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