Selecting every other note

Question

Hi folks...
Is there a way to select every other note in a midi region? I know you can select sub positions etc but that won't work because it's a totally random midi sequence. There's hundreds of notes and I need to select either notes 1/3/5/7 (etc) or 2/4/6/8 (etc). Any ideas? I'm guessing if there is a way it onvolves some trickery...
Cheers

Answer 1

To select manually will take ages
You don't have to do it by hand. You can do it with an AppleScript, and the shareware program MidiKit. This is the AppleScript:
tell application "MidiKit"
activate
end tell
set x to 2
repeat 100 times
tell application "System Events" to key code 51
set x to x + 1
repeat x times
tell application "System Events" to key code 125
end repeat
end repeat
To use that, there are a few things you need to do. In System Preferences > Universal Access, turn on the checkbox for "Enable access for assistive devices."
You also need to make the AppleScript Script Menu visible in your menu bar. How to do this varies by OS version, but I think on 10.5 you need to launch AppleScript Utility (in /Applications/AppleScript) and activate "Show Script Menu in menu bar."
Once the Script Menu appears (near the other Menu Extras, like Airport and Date/Time), use this command on the Script Menu: Open Scripts Folder > Open User Scripts Folder. And then use this command on the Script Menu: Open AppleScript Editor.
You now have an Untitled document open in the AppleScript Editor. Paste in the script text from above, and save that script as a document in the folder you opened. That folder is this one:
Macintosh HD/Users/YourUserName/Library/Scripts
Give your script a helpful name, like "Delete alternate events." Your script will now be available on the Script Menu.
Download, install and launch MidiKit. Export your midi from Logic and open it in Midikit. Use the buttons in the MidiKit toolbar to hide all the events that aren't notes. Select the second note. Run the script by selecting it from the Script menu. It will take a while to run, but it will work. Save the midi in MidiKit and then drag that file back into Logic.
This could almost be done in the Logic Event List, without MidiKit, but it works better with MidiKit.
In the script, where it says "repeat 100 times," you need to edit that number to reflect the number of notes you intend to delete. You don't need to know the exact number, because it's OK if the number you enter exceeds the correct number.