(ORG-4987)
Added Origin 9.1 has added Anti-aliasing control so lines look better on monitor.support for 2D graphs. This allows nicer view of 2D graphs on the monitor.
The images below show screen capture of a 2D line plot with and without anti-aliasing (click to pop up larger image):
Turn Anti-Aliasing On
You can toggle Anti-Aliasing on and off using the button on Graphs toolbar for the active graph.
2D graph templates shipped with Origin have anti-aliasing turned off, since it may slow some operations down, such as zooming, panning, etc.
Additional Anti-Aliasing Settings
(ORG-6500)
For the graphs that has Anti-Aliasing turned on, there are additional global settings to fine tune which type of drawing to use anti-aliasing. These can be found on Graph tab of Tools: Options dialog.