[ferret_users] how does @DIN work on the pressure coordinate

[Xiaoyu Bai <xbai1@xxxxxxxx>]

Dear ferreters,

I am reading the instruction of@DIN from../../documentation/users-guide/variables-xpressions/XPRESSIONS.html. I noticed that we can use@DIN for the Z-axis for variables like salinity. I am wondering how does@DIN work for the pressure coordinate? How does it give weight to each pressure level? Do I need to flip the pressure levels to use@DIN?

Thank you in advance.😸

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Xiaoyu