Change screen resolution using Applescript works on 10.10 non-rentia macbook

Screencast Setup.scpt

-- Launch "System Preferences", open the "Displays" options and change to the "Display" tab
tell application "System Preferences"
	activate
	set the current pane to pane id "com.apple.preference.displays"
	reveal anchor "displaysDisplayTab" of pane id "com.apple.preference.displays"
end tell

local indexToUse

-- Now lets make the necessary changes
tell application "System Events"
	tell tab group 1 of window "SyncMaster" of application process "System Preferences" of application "System Events"
		tell radio group 1
			
			if (value of radio button "Scaled") = 0 then
				-- Click the "Scaled" radio button
				click radio button "Scaled"
				
				tell table 1 of scroll area 1 of tab group 1 of window "SyncMaster" of application process "System Preferences" of application "System Events"
					select row 4
				end tell
			else
				click radio button "Default for display"
			end if
		end tell
		
	end tell
end tell

-- Quit "System Preferences"
quit application "System Preferences"

@TheCatCoder I wrote a command line tool, displayplacer, that lets you programmatically change screen resolutions - including the hidden scaled ones.

Thank you for sharing. I works then I expected. 👍
I add delay 1 before if (value of radio button "Scaled") = 0 then because waiting for Scaled radio button to appear.

For the another language and monitor, you have to change monitor name and button names.
For example, Korean, Scaled to 해상도 조절, Default for display to 디스플레이에 최적화