set obj [objarray new_n_from_increment <type> <n> <from> <increment>]
Command similar to new_from_to
Allocate an array of type $type with <n> values filled starting from $from increasing by <increment>
<type>: chararray shortarray intarray longarray longlongarray floatarray doublearray
<n> an integer with the amount of items to be created
<from> arbitrary value (of type) to be set as first item
<increment> arbitrary value (of type) to increase each item
e.g.
set obj [objarray new_n_from_increment floatarray 6 -3.0 1.5] -> -3.0 -1.5 0.0 1.5 3.0 4.5