Comments on: Smooth MATLAB Graphics

By: jiro

jiro — Thu, 04 Aug 2011 19:25:38 +0000

@Markus,

Yes, I agree that for creating a publication-quality output file, using a vector graphics format is the better approach. This tool is more for if you were doing on-screen presentation directly from MATLAB or making use of the auto-publishing feature.

By: Markus Kuhn

Markus Kuhn — Thu, 04 Aug 2011 16:32:41 +0000

Doing anti-aliasing in MATLAB is usually the wrong approach for publication-quality figures. Instead, use MATLAB to produce a resolution-independent vector graphics format (EPS, PDF, SVG, etc.), and let the software that displays or prints that worry about anti-aliasing. Some of these applications (e.g., Adobe Reader, printer driver) have very good anti-aliasing algorithms and adjust them to the specific properties of your display or output medium (e.g. LCD or Bayer mosaic subpixel rendering).

By: Nicolas

Nicolas — Thu, 14 Oct 2010 20:26:46 +0000

Nice, but gives funny results with latex output. My code is:

[L,Obj] = legend(‘$\overline{h}$’);
t = findobj(Obj,’Type’,'Text’);
set(t,’Interpreter’,'latex’);
myaa;

By: jiro

jiro — Thu, 04 Feb 2010 05:51:55 +0000

Nisa,

I’m not familiar with the Psychtoolbox. It’s not a toolbox developed by the MathWorks. As far as incorporating “myaa” code in R2007b, that should not be a problem, but you would have to do the incorporation yourself.

By: nisa

nisa — Thu, 04 Feb 2010 02:47:48 +0000

Hi,

I have just started to learn to use mathlab can this myaa codes be used with mathlab 7.5.0(R2007b)using Psychtoolbox?thanks.

By: jiro

jiro — Thu, 26 Mar 2009 03:32:39 +0000

Thanks for your comment, Jody.

You probably don’t see any difference between the lines on the screen, because MATLAB graphics currently don’t support real antialiasing.

For example, a typical screen resolution is 96 pixels per inch. A point is 1/72th of an inch. This means that the 1 point line is 1 1/3 pixels, while the 0.5 point line is 2/3 pixels. So both lines get rounded to 1 pixel.

However, I have relayed your comment over to development.

By: Jody Klymak

Jody Klymak — Tue, 24 Mar 2009 00:29:47 +0000

Sorry to revive an old post, but another post made me think to look and see if this had been treated before.

My number-1 beef with Matlab is the quality of the display graphics. I don’t understand why

>> plot(1:10,’linewi’,1)
>> hold on
>> plot((1:10)+1,’linewi’,0.5)

look exactly the same on the screen despite looking quite different in anything sent to print. Is there a reason for this limitation in this day and age, or do I have something set inappropriately?

By: Ad

Ad — Thu, 20 Nov 2008 17:41:42 +0000

Hi,

I just found a tip for anti-ailiasing lines. Just add the attribute ‘LineSmoothing’,'on’. i.e.

line([x0n x1n],[y0n y1n],’LineWidth’,2,’LineSmoothing’,'on’);

It doesn’t appear to be documented in matlab but it works nicely.

By: jiro

jiro — Tue, 02 Sep 2008 19:01:24 +0000

@Daniel,
We do use the hardware, but we don’t expose the supersampling feature through that path, so if you want supersampling, for now you’ll need to do it in software.

@Quan,
Thanks for your comments. Yes, functions for automatically pasting MATLAB plots into a PowerPoint presentation can be very useful. In fact, now you can do this by using MATLAB’s publish capability and selecting PPT as the output format.

http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_env/briymz8-1.html#bri9_s4

By: Daniel Armyr

Daniel Armyr — Mon, 01 Sep 2008 06:37:33 +0000

Hi.

This post raises a question with me: Does matlab use hardware accellerated graphics? And if so, why not allow hardware-accelerated anti-aliasing?