If you want to place the label at the start of the line, try to use the following formula for x coordinate:
x_at(0)
And use the following formula for y coordinate:
y_at(0)
To align the labels at the center of the circle in your example, you need to use the Alignment horizontal and vertical
:
In alignment horizontal
write 'Center'
, and alignment vertical
write 'Half'
. youYou will get the following result, which is exactly what you need: