Inheritance of DataArray

[serazing]

I have created a Window object that inherits from DataArray. I had some issues with recursive call of the constructor inside the print and plot method. I achieved to fix it for the print method by looking at the DataArray code but I had to override the plot method for the moment. Has anyone tried to create an object that inherits from DataArray ?
I think it is an important issue that needs to be address for future development. I am not sure that the structure of xarray objects has made the inheritance easy.

[serazing]

I am trying to use the new decorator in timefilters.py to avoid subclassing DataArray. The developpers of xarray suggest to use the decorators describe here to insure the compatibility with future versions of xarray.