Optional custom canvas context to draw on
Domain over which to plot (in units of the function, not pixels)
Stroke width
Resolution (distance in pixels between sampled points), higher values result in faster plotting but less smooth plots
Scale, defaults to 1, divided by 100 internally for finer control
Stroke color
x-offset (canvas translation), defaults to canvas center
y-offset (canvas translation), defaults to canvas center
Plots a 2D vector field.