id:
setExpression:
Add
label
remove
hide
show
getExpression
The result is
Let's set axis bounds
setAxis
id:
red
blue
green
purple
orange
black
setColor
id:
solid
dashed
dotted
POINT
OPEN
CROSS
setStyle
x step:
x label:
updateXaxis
y step:
y label:
updateYaxis