linux tablet touch fix when rotated

tchfix.sh

#!/bin/bash
# This script rotates the screen and touchscreen input 180 degrees, disables the touchpad, and enables the virtual keyboard
# And rotates screen back if the touchpad was disabled

# experimental / source: https://www.reddit.com/r/linux4noobs/comments/539fw5/how_would_i_rotate_the_touch_screen_in_linux/
# to get device list "xinput list"

isEnabled=$(xinput --list-props 'SynPS/2 Synaptics TouchPad' | awk '/Device Enabled/{print $NF}')

if [ $isEnabled == 1 ] 
then
    echo "Screen is turned upside down"
    xrandr -o inverted
    xinput set-prop 'ELAN Touchscreen' 'Coordinate Transformation Matrix' -1 0 1 0 -1 1 0 0 1
    xinput disable 'SynPS/2 Synaptics TouchPad'
    # Remove hashtag below if you want pop-up the virtual keyboard  
    # onboard &
else
    echo "Screen is turned back to normal"
    xrandr -o normal
    xinput set-prop 'ELAN Touchscreen' 'Coordinate Transformation Matrix' 1 0 0 0 1 0 0 0 1
    xinput enable 'SynPS/2 Synaptics TouchPad'
    # killall onboard 
fi

#!/bin/bash
# This script rotates the screen and touchscreen input 180 degrees, disables the touchpad, and enables the virtual keyboard
# And rotates screen back if the touchpad was disabled

# experimental / source: https://www.reddit.com/r/linux4noobs/comments/539fw5/how_would_i_rotate_the_touch_screen_in_linux/
# to get device list "xinput list"

isEnabled=$(xinput --list-props 'SynPS/2 Synaptics TouchPad' | awk '/Device Enabled/{print $NF}')

# replace with "if file exist" maybe...
if [ $isEnabled == 1 ] 
then
    echo "Screen is turned upside down"
    xrandr -o inverted
    xinput set-prop 'ELAN Touchscreen' 'Coordinate Transformation Matrix' -1 0 1 0 -1 1 0 0 1
    xinput disable 'SynPS/2 Synaptics TouchPad'
    # Remove hashtag below if you want pop-up the virtual keyboard  
    # onboard &
else
    echo "Screen is turned back to normal"
    xrandr -o normal
    xinput set-prop 'ELAN Touchscreen' 'Coordinate Transformation Matrix' 1 0 0 0 1 0 0 0 1
    xinput enable 'SynPS/2 Synaptics TouchPad'
    # killall onboard 
fi