I have a graphic tablet with a pen recognized by xinput as
UC-LOGIC Tablet WP8060U Pen.
The tablet active area has 4:3 proportions.
I have two monitors: 2560x1440 (16:9) on the left and 1440x900 (16:10) on the right.
I'd like to limit the tablet pen to a 4:3 area centered on the left monitor, therefore a 1920x1440 window with an offset from the left border of 320px.
I have trouble understanding what to use for the commands
xinput set-prop "UC-LOGIC Tablet WP8060U Pen" --type=float "Coordinate Transformation Matrix VALUES HERE" xinput set-prop "UC-LOGIC Tablet WP8060U Pen" "Evdev Axis Calibration" xmin xmax ymin ymax