Unexpected output from Dataset[ ]?

Greetings,

please find a short notebook attached in which I present a strange behavior of Dataset[]. This is too “smart” for me to find an explanation. Any idea what is going on here?

Thank you for your help,

best regards

KMS

PS. Mathemativa Version 12.2.

dataset.nb (110 KB)

Hi,

A syntax thing. Dataset takes a single argument. Your Dataset has two arguments (each an Association consisting of a list of Associations), followed by options. So wrap the two “main” Associations in a list to make a single argument. Then it will work as expected.

Please see the attached.

dataset HM.nb (76.1 KB)