Hi @pijyoi this LGTM. I noticed that the example with the notebook sliders to adjust the colors of the image was removed, I assume this was done because scipy was removed as a dependency in binder? How would you feel about re-introducing an example like that (doesn't have to be part of this PR).

I noticed that the example with the notebook sliders to adjust the colors of the image was removed, I assume this was done because scipy was removed as a dependency in binder?

The dependency on scipy was one reason. Another was that it was a poor man's version of examples/HistogramLUT.py, therefore not very satisfactory.

The image example in simple.ipynb hopes to better demonstrate the viewing of "scientific" images, which are:

1. often in floating point.
2. often have data ranges that aren't clipped to some storage format limitation. e.g 0-255, 0-65535, 0.0-1.0, etc
   • i.e. with pyqtgraph, you are not obligated to first do some contrast stretching before displaying it. you can just display it and then interactively play around with the levels.