I have the following dataset:
ds = Dataset@{
<|"x" -> 1, "y" -> 45|>,
<|"x" -> 2, "y" -> 19|>,
<|"x" -> 3, "y" -> 20|>,
<|"x" -> 4, "y" -> 47|>,
<|"x" -> 5, "y" -> 30|>
}
How can I create a new dataset the has the same "x" column but has a "y" column so that each entry in "y" is replaced by y_i - Max[#y], where Max[#y] is the maximum value of "y" in the dataset.
