Apple Logic Pro 7 - Manual (Page 590)

590 Chapter 17 The Transform Window
Delete selected Events
The selected events are deleted.
In this mode, you can use the Transform window as a programmable erase function. All
events that match the Condition are deleted, and all other events remain unchanged.
The Operations setting is irrelevant in this mode.
Copy selected Events & Apply Operations
The selected events are retained in their original form, as well as being copied and
edited.
You can use this mode for applications such as:
Imagine you want to add a mod wheel controller event (#1) 10 ticks before each note,
with a value that matches the note’s velocity. To do this, you set Status = Note in
Conditions. In Operations, set the Position to Add and enter a value of 10 in the field
below it. Set Status as Fix Control and Pitch (-1-) as Fix 1. The last of these operations
means “the first data byte (-1-) receives the value of 1” (the first data byte defines the
controller number for controller events, and mod wheel events happen to be #1).
If we analyze these settings, we see that all note events will be selected for operation. A
copy of each will be made, then moved 10 ticks earlier than the original, and converted
to CC#1 (Mod Wheel)—with a value that corresponds to the velocity of the original
note. This is because the second data byte (Vel) is left unaltered.
Event Parameters
Individual MIDI event parameters have their own columns in the Conditions and
Operations panels:
Position
Time position of the event, referenced to the start of the MIDI Region (not of the song).
Status
Type of event.
Channel
Recorded MIDI channel of the event.
-1-/Pitch
First data byte (note or controller number).
-2-/Vel
Second data byte (velocity or controller value).
Length
Length of the note.