Can you explain why this is needed?

Sure !

I ran into this error because I'm working on xarray datasets with multiple variables and procedurally creating vectorfields for each variable. I'm controlling the scale of the vectors using .opts(magnitude=hv.dim("Magnitude").norm())
Some of the variables I use have fixed magnitude, and when displaying the plot the line above returned a warning because since min==max, norm() was attempting to divide by zero.

I'm not opposed to this PR, but currently, it breaks CI.

Did you try to pass in limits to hv.dim("Magnitude").norm(limits=(0, None))? Or would you like it to be dynamically updated?

Would you happen to have a small example I could play around with?

Thank you for the PR, this will be part of the next release 1.21.0

Codecov Report

Attention: Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.84%. Comparing base (7aaeebc) to head (05c2a35).
Report is 4 commits behind head on main.

@@            Coverage Diff             @@
##             main    #6366      +/-   ##
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+ Coverage   88.83%   88.84%   +0.01%     
==========================================
  Files         328      328              
  Lines       69805    69829      +24     
==========================================
+ Hits        62010    62039      +29     
+ Misses       7795     7790       -5     

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