gnuplot-bugs — Place to submit bug reports on gnuplot

Re: [Gnuplot-bugs] no axes for arrow

[<pl...@pi...>]

On Mon, 04 Jun 2007 00:51:16 +0200, Hans-Bernhard Bröker  
<HBB...@t-...> wrote:

> pl...@pi... wrote:
>> On Sun, 03 Jun 2007 19:59:13 +0200, Hans-Bernhard Bröker
>> <HBB...@t-...> wrote:
>
>>> An arrow has 4 independent coordinates, each of which can meaningfully
>>> be placed sing a different coordinate system.
>
>> Fair point, but four independant coords that cannot be specified
>> independantly it seems.
>
> Again you judge prematurely.  You can have every single one of an
> arrow's up to six coordinates specified using a different coordinate
> system.  Each coordinate comes with its own optional coordinate system
> specifier.  See the examples.
>
>> The current implementation is less flexible in this respect.
>
> Wrong.  You just didn't fully understand its description.
>

You are of course correct. I needed to look at 'help coordinates' to  
realise that each x,y (or z) could be a different system even within an xy  
pair.

        {<system>} <x>, {<system>} <y> {,{<system>} <z>}

  Each <system> can either be `first`, `second`, `graph`, `screen`, or
  `character`.

Thanks.

Re: [Gnuplot-bugs] no axes for arrow

[<HBB...@t-...>]

pl...@pi... wrote:
> On Sun, 03 Jun 2007 19:59:13 +0200, Hans-Bernhard Bröker  
> <HBB...@t-...> wrote:

>> An arrow has 4 independent coordinates, each of which can meaningfully
>> be placed sing a different coordinate system.

> Fair point, but four independant coords that cannot be specified  
> independantly it seems. 

Again you judge prematurely.  You can have every single one of an 
arrow's up to six coordinates specified using a different coordinate 
system.  Each coordinate comes with its own optional coordinate system 
specifier.  See the examples.

> The current implementation is less flexible in this respect.

Wrong.  You just didn't fully understand its description.

Re: [Gnuplot-bugs] no axes for arrow

[<pl...@pi...>]

On Sun, 03 Jun 2007 19:59:13 +0200, Hans-Bernhard Bröker  
<HBB...@t-...> wrote:

> An arrow has 4 independent coordinates, each of which can meaningfully
> be placed sing a different coordinate system.

OK that makes more sense than your initial reply.

I had not thought of the need for using different coordinate systems for  
each end of an arrow but I suppose it's more flexible.

Fair point, but four independant coords that cannot be specified  
independantly it seems. First or second but not mixed.

Since each point carries a qualifier this could equally be x1y2 or first  
or second... etc.  This would add extra flexability since currently is  
does not seem possible to mix coordinates like you can with "axes".

I'm not sure what case would call for mixed coordinates, and it's probably  
not worth searching for specific examples. Having said there's a need for  
mixed coords for the two points, why not go the whole hog and allow x1y2  
as well?

The current implementation is less flexible in this respect.

This is not a major issue I want to do to death, just a suggestion I'll  
throw into the list in case anyone thinks it could be useful.

regards.

Re: [Gnuplot-bugs] no axes for arrow

[<HBB...@t-...>]

pl...@pi... wrote:
> On Sun, 03 Jun 2007 15:16:47 +0200, Hans-Bernhard Bröker  
> <HBB...@t-...> wrote:

>> No, it only requires actually reading the documentation.  You rather
>> obviously didn't bother with that before posting.

> Aparently I have missed something in the doc that achieves the same  
> result, so instead of just sounding off with an RTFM it would make more  
> sense to at least point me at the right section.

How could you possibly need pointing to "help arrow"?  It's the 
painfully obvious place to look for the information you're after, and 
you say you already found that.  Now all you have to do is actually 
*read* it.  I don't see how the information you're looking for could be 
placed any more prominently inside that section of the docs.  It's just 
two paragraphs below the command syntax specification.

>> The "axes" option only applies to "plot", because it specifies a *pair*
>> of axes for a single object (one dataset in a plot).
>>
> So what is the difference with specifying a *pair* of axes for a single  
> object when its a label or arrow?

An arrow has 4 independent coordinates, each of which can meaningfully 
be placed sing a different coordinate system.  Two of those don't even 
exist for 'plot'.  So we're talking about two different tasks here, 
which rightfully have different command syntax.

> It would seem perfectly logical to implement this in the same way.

Only to people who don't see enough of the whole picture.

Re: [Gnuplot-bugs] no axes for arrow

[<pl...@pi...>]

On Sun, 03 Jun 2007 15:16:47 +0200, Hans-Bernhard Bröker  
<HBB...@t-...> wrote:

> pl...@pi... wrote:
>
>> I recently wanted to put and arrow on a graph with a y2 axis. It appears
>> that "axes" syntax does not work for arrows and labels.
>
> That syntax indeed doesn't work, but you can get the desired effect just
> the same.
>
>> Particularly for arrows this is inconvenient. To correctly place an  
>> arrow
>> in relation to data plotted on y2 requires a muldiv with the two y  
>> ranges
>> and adding in the y2 offset.
>
> No, it only requires actually reading the documentation.  You rather
> obviously didn't bother with that before posting.
>

No, I tried it since it seemed the logical thing to do. When it did not  
work I consulted the doc and found that "axes" does not apply to arrows.  
At that point I thought it may be a good idea if it did so I posted.

Aparently I have missed something in the doc that achieves the same  
result, so instead of just sounding off with an RTFM it would make more  
sense to at least point me at the right section.

The doc for gnuplot is quite complex and it's easy to miss something even  
having read most of it.

It would not cost you any more time to be helpful than to be smart, but I  
see from your posts here and in the groups you get more pleasure from the  
latter.

So thanks for being no help at all.

The point of this post was not a pathetic plea for help but a suggestion  
that this may be a useful feature to add. Having found the axes option on  
plot it's an obvious intuitive extention to use it on an arrow. That's my  
suggestion.

> The "axes" option only applies to "plot", because it specifies a *pair*
> of axes for a single object (one dataset in a plot).
>
So what is the difference with specifying a *pair* of axes for a single  
object when its a label or arrow?
It would seem perfectly logical to implement this in the same way.

Now, since you rather obviously did not read this message as it was  
written, as a feature request, not a help request, once you *have* read it  
you may wish to comment on whether it's worth implementing as an  
alternative to the way you rather obviously dont want to tell me about.


If you cant be bothered to reply in a helpful fashion , dont reply.

I would offer the same advice for the groups where your off-hand remarks  
are hardly creating a positive image for gnuplot.

If you think something is a lame question not worthy of your time dont  
reply. If your sole motivation for replying is to be smart , dont bother.

Have a nice day. ;)


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Re: [Gnuplot-bugs] no axes for arrow

[<HBB...@t-...>]

pl...@pi... wrote:

> I recently wanted to put and arrow on a graph with a y2 axis. It appears  
> that "axes" syntax does not work for arrows and labels.

That syntax indeed doesn't work, but you can get the desired effect just 
the same.

> Particularly for arrows this is inconvenient. To correctly place an arrow  
> in relation to data plotted on y2 requires a muldiv with the two y ranges  
> and adding in the y2 offset.

No, it only requires actually reading the documentation.  You rather 
obviously didn't bother with that before posting.

The "axes" option only applies to "plot", because it specifies a *pair* 
of axes for a single object (one dataset in a plot).

[Gnuplot-bugs] no axes for arrow

[<pl...@pi...>]

hi,

I recently wanted to put and arrow on a graph with a y2 axis. It appears  
that "axes" syntax does not work for arrows and labels.

Particularly for arrows this is inconvenient. To correctly place an arrow  
in relation to data plotted on y2 requires a muldiv with the two y ranges  
and adding in the y2 offset. "axes x1y2" would be a lot cleaner and  
quicker.

eg.
set arrow 1 from "12:00",mean_y2  to  "16:00",mean_y2 axes x1y2 nohead lw  
1;

Presumably fairly simple to code since this syntax is supported elsewhere  
already.

Thx.

Re: [Gnuplot-bugs] new assign() function.

[<pl...@pi...>]

On Sun, 03 Jun 2007 01:59:25 +0200, Ethan A Merritt  =

<merritt@u.washington.edu> wrote:

> Your examples are so complicated that I can't see what is supposed to =
 =

> happen.
> But let me point out that it is perfectly legal to put the definition
> inside the plot statement, in which case I think it will be re-execute=
d  =

> on
> every "replot".
>  plot started=3D0, foo(x), baz(x)
> 	Ethan
>

Ah I did not realise, yes that's much tidier.

in fact help plot, that I read yesterday, includes that info but I misse=
d  =

it because I was looking for something else and failed to notice there w=
as  =

an assignment in there.

  Examples:
        plot sin(x)
        plot f(x) =3D sin(x*a), a =3D .2, f(x), a =3D .4, f(x)
        plot [t=3D1:10] [-pi:pi*2] tan(t), \
             "data.1" using (tan($2)):($3/$4) smooth csplines \
                      axes x1y2 notitle with lines 5

gnuplot is amazingly flexible but takes some time to get to know.

Thanks once again for your help.

/peter.

Re: [Gnuplot-bugs] new assign() function.

[Ethan A M. <merritt@u.washington.edu>]

On Saturday 02 June 2007 07:17, pl...@pi... wrote:
> 
> The problem occurs in using replot. Since the line defining the initial  
> conditions only gets executed when loading the .gnu file, calling replot  
> here gives me an incorrect result by retaining that last values of started  
> and hence prev_x, prev_y :

Your examples are so complicated that I can't see what is supposed to happen.
But let me point out that it is perfectly legal to put the definition
inside the plot statement, in which case I think it will be re-executed on 
every "replot".

  plot started=0, foo(x), baz(x)

	Ethan


> 
> A work around would be to plot some dummy data before the main plot that  
> called another function where the variables are initialised. In my case it  
> is sufficient to reassign started=0 as shown. There may be a more elegant  
> solution.
> 
> 
> #started=0;
> reset(x)=assign("started",0.0); # called by dummy plot to ensure  
> initialisation on replot
> add_aug(x,y)=assign("area",(started>0)?\
>                                        area + (x-prev_x)*(y+prev_y)/2.0  
> + 0.0*(assign("prev_x",x) + assign("prev_y",y) ) \
>                                      :  0.0*( assign("started",1)  
> + assign("prev_x",x) + assign("prev_y",y) ) \
>                     ) ;
> 
> plot  "init.data"  using 1:(reset(0)) t "" \
> ,  datafile   using  
> 1:(add_aug(strptime("%H:%M",stringcolumn(1))/3600,P( Th4($3-2.0) - Th5($2)  
> ))/10) axes x1y2  with lines s f t "Energy*100/kWh"
> 
> 
> best regards/
> 
> 

-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle 98195-7742

[Gnuplot-bugs] new assign() function.

[<pl...@pi...>]

Hi,

in my continued use and testing of assign() patch I was found a limitati=
on  =

in using this technique called from plot. This does not ammount to a bug=
  =

in assign(), which seems to be pretty solid.


The problem occurs in using replot. Since the line defining the initial =
 =

conditions only gets executed when loading the .gnu file, calling replot=
  =

here gives me an incorrect result by retaining that last values of start=
ed  =

and hence prev_x, prev_y :

A work around would be to plot some dummy data before the main plot that=
  =

called another function where the variables are initialised. In my case =
it  =

is sufficient to reassign started=3D0 as shown. There may be a more eleg=
ant  =

solution.


#started=3D0;
reset(x)=3Dassign("started",0.0); # called by dummy plot to ensure  =

initialisation on replot
add_aug(x,y)=3Dassign("area",(started>0)?\
                                       area + (x-prev_x)*(y+prev_y)/2.0 =
 =

+ 0.0*(assign("prev_x",x) + assign("prev_y",y) ) \
                                     :  0.0*( assign("started",1)  =

+ assign("prev_x",x) + assign("prev_y",y) ) \
                    ) ;

plot  "init.data"  using 1:(reset(0)) t "" \
,  datafile   using  =

1:(add_aug(strptime("%H:%M",stringcolumn(1))/3600,P( Th4($3-2.0) - Th5($=
2)  =

))/10) axes x1y2  with lines s f t "Energy*100/kWh"


best regards/

Re: [Gnuplot-bugs] Problems on changing verions

[<HBB...@t-...>]

Bernardo Brandao Niebuhr dos Santos wrote:
> Can u help me?

No, we can't.  Because, guess what, nobody out here is clairvoyant 
enough to read your thoughts, much less your hard disk, all across internet.

If there's to be any chance of you getting meaningful help, you have to 
show us the script whose output changed, and tell us what terminal 
driver was used.

[Gnuplot-bugs] Problems on changing verions

[Bernardo B. N. d. S. <ber...@si...>]

Hi!!

I'm was using the version 4.0 of gnuplot to make some graphics....

The version 4.0 do not have  the option to make histograms, so I 
downloaded the new version, 4.2

But when I used , with this version, the script I was using before, the 
figures are not the same!

The label are now in bold, the x label (I'm using time x labels) hasn't 
been plotted in all the axis, and the titles are not apearing entirely...

Maybe it's because of the differences between the versions, but I 
believe the commands are the same...

Can u help me?

Thanks

Bernardo

Re: [Gnuplot-bugs] Fortran-gnuplot link ??

[<HBB...@t-...>]

Ganesh Parajuli wrote:
> Hello, I am interested in using gnuplot for plotting the graph. But I 
> could not figure out how to link gnuplot in fortran 90 coding.

gnuplot isn't something you "link .. in".  It's an external program. 
You have to have find out how Fortran allows an application to run 
others, redirect their standard input and output, and send commands to 
the redirected streams.

[Gnuplot-bugs] Banksy : Manifesto

[Philipp H. <ph...@ha...>]

Aus dem Tagebuch von Leutnant Colonel
 Mervin Willet Gonin DSO,
einer unter den ersten Britischen Soldaten,
die 1945 Bergen-Belsen befreiten.

Ich kann keine gerechte Beschreibung von dem schrecklichen 
Lager geben, in dem meine Maenner und ich die naechsten Monate 
unseres Lebens verbringen sollten. [...] Ueberall lagen 
Leichen, einige in grossen Haufen, manchmal lagen sie einzeln 
oder zu zweit, eben dort wo sie hingefallen waren. Es dauerte 
eine Weile sich daran zu gewoehnen, dass Maenner, Frauen und 
Kinder im Vorbeigehen zusammenbrachen und sich zurueckzuhalten, 
ihnen zu Hilfe zu eilen. Man musste sich schnell an den 
Gedanken gewoehnen, dass der Einzelne schlicht nicht zaehlte. Man 
wusste, dass an einem Tag fuenfhundert starben, und dass in den 
naechsen Wochen fuenfhundert pro Tag sterben wuerden, bevor 
irgendwas, das wir machen konnten, die kleinste Wirkung zeigen 
wuerde. Es war, wie auch immer, nicht einfach, ein Kind mit 
Diphtherie sich zu Tode husten zu sehen, wenn Du wusstest, dass 
eine Tracheotomie und Pflege es retten wuerde, man sah Frauen 
an ihrem Erbrochenen erstickt, weil sie zu schwach waren sich 
umzudrehen, und Maenner Wuermer essen waehrend sie einen halben 
Laib Brot hielten, einfach weil sie Wuermer hatten essen 
muessen, um zu ueberleben, und nun kaum vermochten zu 
unterscheiden. Stapel von Leichen, nackt und obszoen, und eine 
Frau zu schwach zum Stehen stuetze sich an ihnen ab, waehrend 
sie das Essen, was wir ihr gegeben hatten, ueber einem offenen 
Feuer zubereitete; Maenner und Frauen hockten sich irgendwo im 
Freien hin, um sich von der Ruhr zu erleichtern, die ihre 
Gedaerme durchspuelte; eine splitternackte Frau wusch sich mit 
einem Stueck Seife und mit Wasser von einem Tank in dem ein 
totes Kind schwamm. Es war kurz nachdem das Britische Rote 
Kreuz ankam, wobei das eventuell nicht damit zusammenhing, dass 
eine grosse Menge Lippenstifte ankam. Das war alles andere, als 
was wir Maenner wollten, wir riefen aus nach hunterttausend 
anderen Sachen, und ich weiss nicht, wer Lippenstifte bestellt 
hatte. Ich wuenschte so sehr, ich koennte herausfinden wer das 
war, es war ein Geniestreich, einfach rein brilliant. Ich 
glaube nichts tat mehr fuer die Insassen als der Lippenstift. 
Frauen lagen im Bett ohne Bezuege und ohne Nachthemd aber mit 
scharlachroten Lippen, Du sahst sie herumwandeln mit nichts 
als einer Decke ueber der Schulter aber mit scharlachroten 
Lippen. Ich sah eine Frau tot auf dem Obduktionstisch und in 
ihrer Hand steckte ein Lippenstift. Endlich hatte jemand etwas 
getan, um sie wieder zu Individuen zu machen, sie waren 
jemand, nicht laenger blos die Nummer eintaetowiert auf dem Arm. 
Endlich konnten sie sich wieder fuer ihre Erscheinung 
interessieren. Dieser Lippenstift fing an ihnen ihr Menschsein 
wiederzugeben.

Uebersetzung des Manifesto of Banksy 
http://www.banksy.co.uk/manifesto/index.html

35929

[Gnuplot-bugs] Fortran-gnuplot link ??

[Ganesh P. <gan...@gm...>]

Hello, I am interested in using gnuplot for plotting the graph. But I could
not figure out how to link gnuplot in fortran 90 coding.

I am using winxp platform.

Thanks,
Regards,

----------------------------------------------
Ganesh Prasad Parajuli
Stuttgart, Germany

[Gnuplot-bugs] =?ISO-2022-JP?B?jcWL35hBl42CxYKrgsSCyIKtgsSCsoLfgvGCyIKzgqKBY5N7gsGCxILcgreC5oLLgUiW6YLGgqmCyYingqSCzIp5grWC3YLJgrWCxILcgreBQg==?=

[<you...@Sa...>]

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‚»‚ꂶ‚áŒg‘тɘA—‚­‚¾‚³‚¢‚ˁ`(^o^)

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[Gnuplot-bugs] =?ISO-2022-JP?B?jcWL34OBgVuDi4LFgquCxILIgq2CxIKygt+C8YLIgrOCooFjk3uCwYLEgtyCt4KpgUiXiI9UgsaCqYnvgqaC6YLMinmCtYLdgsmCtYLEgtyCt4FC?=

[<pia...@at...>]

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Re: [Gnuplot-bugs] Hello!

[Neal <bhi...@pr...>]

Dear friend,
I found your picture on one of the websites, canb we talk to 
each other? I might be coming to your place in few weeks.
This would be a great opportunity to meet each other.
Btw, I am a waoman. I am 25. Darop me a line at fk...@Sp...

[Gnuplot-bugs] =?iso-2022-jp?b?GyRCOiNGfExARnwkSCQrMCkkKCReGyhC?= =?iso-2022-jp?b?GyRCJDskcyQrISlLXEV2JEskUiReGyhCICAbJEIkNyRGJCQkXiQ5GyhC?= =?iso-2022-jp?b?GyRCISYhJiEmJDRPIk1tQlQkQyRGJF4kOSEjGyhC?=

[<foo...@ya...>]

メールだけで会う事に抵抗ありますか？もしそうなら、電話で話しませんか？

フリー掲示板では番号だって交換できますから、メールだけで会うのが不安なのは私も一緒です、

なので一度電話できればお互いに信用して会えますよね？勝手な話ばかりして申し訳ありません。

このメールを確認できてるようなら返事が欲しいんです。

いつも使ってるフリーアドレスです。

http://www.givenchy-rouge.com/dakiai/sho/

ここならパソコンでも携帯でもフリーアドレスでも何でも大丈夫でお金も掛かりません。

写真を準備して待ってますね、電話で話す事が出来れば今でも約束する事が出来ると思うんです

Re: [Gnuplot-bugs] Hello!

[Aaron <ozo...@ge...>]

Dear frienbd,
I foundb your picture on one of the websites, can we talk to 
each other? I might be acoming to your place in few weeks.
This bwould be a great opportunibty to meet each other.
Btw, I am a wboman. I am 25. bDrop me a line at
xd...@Sp...

Re: [Gnuplot-bugs] SVG font rendering issue

[Ethan M. <merritt@u.washington.edu>]

On Friday 25 May 2007 15:40, pl...@pi... wrote:
> >
> > Opera also fails to render transparent pattern-fill correctly.
> 
> Hi , looking at your utf8 test page and any output from webify.pl , I dont  
> see any definition of background colour or opacity. Neither do I see any  
> comment about the background of a plot in gnuplot help function.

I am not talking about transparency of the background. I am talking about
the style setting   "set style fill transparent pattern <n>".
Have a look at demo plots 3 and 4 of
	
    http://gnuplot.sourceforge.net/demo_svg/transparent.html

compared to the PNG versions

    http://gnuplot.sourceforge.net/demo_4.3/transparent.html

But I had difficulties getting pattern-fill to work at all in SVG,
and it may well be that it still isn't specified 100% correctly.
 
> Where does the very light grey b/g I see using ksvg come from 

Good question.  I don't know.

-- 
Ethan A Merritt 

Re: [Gnuplot-bugs] bug?

[<HBB...@t-...>]

Nicolas Ubrig wrote:

> I have a little problem to plot a function with gnuplot.

Actually, the problem is not with functions, or plotting, but with 
expression evaluation.  Check the third paragraph of 'help expressions' 
to understand why (b/2) changes behaviour if you make b=1, as opposed to 
  b=1.0.

Re: [Gnuplot-bugs] SVG font rendering issue

[<pl...@pi...>]

On Thu, 24 May 2007 18:10:50 +0200, Ethan Merritt  
<merritt@u.washington.edu> wrote:

> On Thursday 24 May 2007 08:00, pl...@pi... wrote:
>> > Try this as a test page:
>> >
>> >      http://gnuplot.sourceforge.net/demo_svg/utf8text.html
>>
>> That page seems to come up just about the same in Opera and firefox for  
>> me
>> (running Gentoo linux untested on win) except that Opera scales fonts
>> continously and smoothly. Opera maintains appropriate font size for the
>> axes lables as display gets bigger. FFx quickly makes a mess of it with
>> huge fonts that overwrite each other and spread onto the graph itself.
>
> I agree that the rendering in Firefox is worse than either Opera
> or Konqueror (ksvg).  However both Opera and ksvg have at least one
> annoying bug that can be seen in the vertical positioning of the  
> expression
> inside the integral on the test page.  It should share a baseline with
> the integral sign itself but instead it shows up level with the
> superscript '∞'. The bug is that if a text chunk
> contains positioning information, but the text consists only of
> spaces ('\040'), then the vertical positioning is ignored.
> This leaves the "current position" in the wrong place vertically
> for any following text chunks.
>
> Opera also fails to render transparent pattern-fill correctly.
>

Hi , looking at your utf8 test page and any output from webify.pl , I dont  
see any definition of background colour or opacity. Neither do I see any  
comment about the background of a plot in gnuplot help function.

Where does the very light grey b/g I see using ksvg come from and why is  
Opera's transparant redering wrong?

TIA.

[Gnuplot-bugs] bug?

[Nicolas U. <n....@mx...>]

Hello,

I have a little problem to plot a function with gnuplot.

here the functions (phi will be include in HNimag):

phi(x) =3D atan( sin(a * pi/2) / ((2*pi*tau*x)**(-a) + cos(a * pi/2)))

HNimag(x) =3D de * sin(b * phi(x)) / ((1 + 2 * (2*pi*tau*x)**(a) * cos(a =20
* pi/2) + (2*pi*tau*x)**(2*a))**(b/2))


For b=3D0.99999999999999 the trace is correct (the curve I should get =20
when b=3D1). If u take b=3D1 the function make something wrong.

Is it a bug?

Greetings


***********************************************
Nicolas Ubrig
AG Prof.Dr. Rolf Pelster
Universit=E4t des Saarlandes
Geb. E2.6,   Zi. 2.10
FR 7.2 Experimentalphysik
Postfach 151150,  D-66041 Saarbruecken, GERMANY
Tel. ++49 - (0)681 - 302 - 3515
n....@mx...