X-Received: by 10.140.99.106 with SMTP id p97mr362486qge.13.1456866477900; Tue, 01 Mar 2016 13:07:57 -0800 (PST) X-Received: by 10.182.210.167 with SMTP id mv7mr250575obc.18.1456866477855; Tue, 01 Mar 2016 13:07:57 -0800 (PST) Path: csiph.com!usenet.blueworldhosting.com!feeder01.blueworldhosting.com!peer02.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!y89no5008962qge.0!news-out.google.com!k1ni5810igd.0!nntp.google.com!hb3no10502485igb.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.graphics.apps.gnuplot Date: Tue, 1 Mar 2016 13:07:57 -0800 (PST) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=109.112.8.167; posting-account=M1wgSgoAAAC5SFuSzW82Oxac6m4PiLVc NNTP-Posting-Host: 109.112.8.167 References: <8bd1c7cb-da40-4d20-a789-4e5c6ebd31a0@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: Subject: Re: chart disappears when i add xrange / yrange to binary array plot of radio spectrogram data From: =?ISO-8859-1?Q?Mario_Cannistr=E0?= Injection-Date: Tue, 01 Mar 2016 21:07:57 +0000 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Received-Bytes: 2409 X-Received-Body-CRC: 2013320357 Xref: csiph.com comp.graphics.apps.gnuplot:3247 Thank you Hans-Bernhard for your kind answer. If I correctly understand, xrange is actually a filter that I'm applying on= x axis values (values that I should keep in the file, currently absent). Actually I don't understand where the x values 01:06:00 to 01:07:18 are com= ing from, since i intentionally stored only the Z values in the file. About my next tentative: should I change the binary file structure to conta= in all info (x,y,z =3D time, frequencies,z), which format should I use for = time ? would be ok a 32 bit integer ? I remember of binary "matrix" format = I've read about, would that be fine and able to contain integers for x,y an= d float for z ? As an alternative to all that: would it be possible to just produce all the= labels with some loop, avoiding usage of "xrange" so that i can get the pl= ot with the current binary file structure? For me it's really important to = keep file size at a minimum... that sample is 2.5 MB for 60 seconds of scan= and I should work with about 20 files - 30 minutes each, something that i = can plot in acceptable time (already tested). Kind regards, Mario