Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!news.musoftware.de!wum.musoftware.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: brendan.halpin@ul.ie (Brendan Halpin) Newsgroups: comp.graphics.apps.gnuplot Subject: Re: fatal precision problem in gnuplot or fatal operator incompetence? Date: Sat, 28 Apr 2012 15:31:29 +0100 Lines: 21 Message-ID: <87mx5wlygu.fsf@wivenhoe.ul.ie> References: Reply-To: brendan.halpin@ul.ie Mime-Version: 1.0 Content-Type: text/plain X-Trace: individual.net kjfluqNw9O6QEZWmoQvVHgy35/PEFlXj53/tx7WP7SEHyAmsIf Cancel-Lock: sha1:kT7soD7wEXtwWH7FMVCU/O9wjGg= sha1:PH8el8w1kMUVJ04tDlgLqE1ACfQ= User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.94 (gnu/linux) Xref: csiph.com comp.graphics.apps.gnuplot:1059 On Sat, Apr 28 2012, Charles T. Smith wrote: > Why does: > > plot [0:1000] sin(x) > > seem to be modulated with what appears to be a sine wave? The long answer involves words like aliasing and Nyquist. The short answer is evident from the following: set samples 10000 plot [0:1000] sin(x) Brendan -- Brendan Halpin, Department of Sociology, University of Limerick, Ireland Tel: w +353-61-213147 f +353-61-202569 h +353-61-338562; Room F1-009 x 3147 mailto:brendan.halpin@ul.ie ULSociology on Facebook: http://on.fb.me/fjIK9t http://teaching.sociology.ul.ie/bhalpin/wordpress twitter:@ULSociology