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From: Frank M Salter <fmsalter@bl...>  20100618 14:48:01
Attachments:
gnuplot_problems[1].tar.bz2

Hi, reference previous email. Attachments attached to this one. Apologies F M Salte 
From: Frank M Salter <fmsalter@bl...>  20100618 15:06:51

Hi, Problems plotting in 3 dimensions Apologies, if I'm off target but gnuplotbugs seems to be unusable! System: Slackware 13.1; gnuplot 4.4 I am enclosing a number of scripts which demonstrate one or more problems when working with gnuplot. The *1* examples demonstrate simple examples of drawing single lines in 3 dimensions. The *2* examples demonstrate one or more problems when attempting to draw families of lines. I have tried to make the examples self explanatory. The images created demonstrate the different ways in which incorrect output is produced. I hope you can help resolve these problems. Regards Frank Salter 
From: HansBernhard Bröker <HBBroeker@t...>  20100623 13:46:16

Am 18.06.2010 16:35, schrieb Frank M Salter: > The *1* examples demonstrate simple examples of drawing single lines > in 3 dimensions. > > The *2* examples demonstrate one or more problems when attempting to > draw families of lines. > > I have tried to make the examples self explanatory. Sorry, but I have to say that didn't quite work out. There are no explanations whatsoever in those examples. "Produces strange results" doesn't really count as an explanation. > The images created demonstrate the different ways in which incorrect > output is produced. They demonstrate nothing without knowing what you expected to happen instead. 
From: Ethan Merritt <merritt@u.washington.edu>  20100623 17:12:22

On Friday 18 June 2010 07:35:20 am Frank M Salter wrote: > Hi, > Problems plotting in 3 dimensions > > Apologies, if I'm off target but gnuplotbugs seems to be unusable! > > System: Slackware 13.1; gnuplot 4.4 > > I am enclosing a number of scripts which demonstrate one or more > problems when working with gnuplot. > > The *1* examples demonstrate simple examples of drawing single lines > in 3 dimensions. > > The *2* examples demonstrate one or more problems when attempting to > draw families of lines. I cannot figure out what it is about your plots that you consider to be a problem. exp_100 and exp_200 appear to produce identical results, although their titles claim that exp_100 "produces expected result" and exp_200 "differs from exp_100". The others ... there is no explanation of what you expect, so it's hard to evaluate whether the plot is or is not conforming to that expectation. For example, exp_211 produces a very nice looking plot although the chosen yrange is 20 times larger than necessary. > I have tried to make the examples self explanatory. > The images created demonstrate the different ways in which incorrect > output is produced. > > I hope you can help resolve these problems. Please explain what exactly are "these problems". Ethan > > Regards > > Frank Salter > >  > ThinkGeek and WIRED's GeekDad team up for the Ultimate > GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the > lucky parental unit. See the prize list and enter to win: > http://p.sf.net/sfu/thinkgeekpromo > _______________________________________________ > gnuplotbeta mailing list > gnuplotbeta@... > https://lists.sourceforge.net/lists/listinfo/gnuplotbeta >  Ethan A Merritt Biomolecular Structure Center, K428 Health Sciences Bldg University of Washington, Seattle 981957742 
From: 松田七美男 <matuda@fi...>  20100624 07:08:21

Hi, Frank I guess that in exp_210, exp_211, command as below causes curiosity. dummy b, u If you leave it alone, b defined as parametric variable should have default range [10:10]. So, iteration [b = 1 : 500 : 1] does not work correctly. Please comment it out and try again. Sicerely, Namio MATUDA > Hi, > reference previous email. Attachments attached to this one. > > Apologies > > F M Salte > > > >  > ThinkGeek and WIRED's GeekDad team up for the Ultimate > GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the > lucky parental unit. See the prize list and enter to win: > http://p.sf.net/sfu/thinkgeekpromo > > > > _______________________________________________ > gnuplotbeta mailing list > gnuplotbeta@... > https://lists.sourceforge.net/lists/listinfo/gnuplotbeta   mmm mmm  matuda@... ((^_^)) < >  松田七美男＠東京電機大学 物理系列 教授 { } ({ })  〒1018457 千代田区神田錦町22 _I I_ _I_  Tel:03(5280)3402 Fax:03(5280)3570 
From: Ethan Merritt <merritt@u.washington.edu>  20100624 16:51:52

On Wednesday 23 June 2010 11:45:30 pm 松田七美男 wrote: > Hi, Frank > > I guess that in exp_210, exp_211, command as below causes curiosity. > > dummy b, u > > If you leave it alone, b defined as parametric variable should have > default range [10:10]. So, iteration [b = 1 : 500 : 1] does not work > correctly. Please comment it out and try again. Good point. Explicitly resetting a parametric dummy variable inside a plot command could indeed lead to confusion. On the other hand, the plot produced by deleting "dummy b,u" is the same as the plot produced by leaving that command in place while adding "set yrange [0:5]". So another possible confusion is what to expectat from autoscaling a parametric plot. Ethan 
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