In PDL 2.3.3 this works:
but it does not in PDL 2.4.0, in which the script
exits complaining about a division by zero. I use a
lot this feature of defining a reversed range (values
decreasing from left to right and/or from bottom to
top) because it is quite useful in my area of
research. Moreover, a simple definition like the one
above seems a sensible solution to this need.
As PDL 2.4.0 does not seem to have included an
alternative way to do this kind of definition, my
guess is that this is a bug and not an intended
N.B.: Although it would not be a real solution, I had
already tried to mix the OO functions and the
low-level ones in order to define ranges as needed.
It gets quite cumbersome and still it does not work