thanks Steven. I looked again through Images' issues, and it might be related to this one: https://github.com/timholy/Images.jl/issues/237 .
- [julia-users] Displaying images in Jupyter notebook cormullion
- [julia-users] Re: Displaying images in Jupyter note... Steven G. Johnson
- [julia-users] Re: Displaying images in Jupyter ... cormullion