gnuplot-info Mailing List for gnuplot (Page 342)

Hello,

Even a simple 3d plot such as splot sin(x) + cos(y) results in numbers
overwriting each other (at the points where the axes meat each other)
as well as the axes. This seems to be the result
of the rotated view. Is there any way to avoid this (at least for the
postscript terminal) without residing to tricks such as adding spaces
and newlines in the format (set format y "       %g")?

PS. Please Cc: me as I am not subscribed to the list.

-- 
Periklis Akritidis

On Wed, 26 May 2004, Gilles Hunault wrote:

> 
>  I would like how I should cite gnuplot in an
>  article since there are many authors. The use
>  of gnuplot for our article does not rely on a
>  specific version of gnuplot since it uses
>  basic (x,y) plotting.

While we don't have any particular policy about this, I guess the
correct citation would be

author: Thomas Williams, Colin Kelley et al.
Title: gnuplot"
reference:  http://www.gnuplot.info

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

 I would like how I should cite gnuplot in an
 article since there are many authors. The use
 of gnuplot for our article does not rely on a
 specific version of gnuplot since it uses
 basic (x,y) plotting.

 Thank you for your help and for gnuplot.

<<Au plaisir de vous relire.>>
--
(.=.)
Gilles J. HUNAULT, gil...@un...
"Science needs culture and feelings"
http://www.info.univ-angers.fr/pub/gh/

Dear Open Source developer

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_______________________________________________________________________

Hello,

	I'm having special sets of 2D data, where the y coordinate is
continuous but the x coordinate is discrete (the x's are labels for
spectral peaks and the y's represent the experimental variable). I want
to plot my results using 'pm3d map'.

	The problem is that pm3d uses the average of neighboring points to
attribute a colour to the region between these points; the result is
that the intensities of my 'peaks' are all mixed together.

	Is there a way to tell pm3d not to show the average value for a given
axis?  

Thanks,

Jerome Levesque

-- 
Jerome Levesque <jer...@nr...>

On Sat, 22 May 2004, Tore Johansson wrote:

> I get only 65536 number of samples plotted. Is this a limitation in
> gnuplot or a bug??

Hard to tell --- you don't tell what version of gnuplot, what platform you
experience this on, nor what terminal driver you were using.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

Hi,

I am trying to plot a series of samples stored in a datafile.
It works fine if I do as follow:
plot 'datafile'

But if I do:
plot 'datafile' with lines 1

I get only 65536 number of samples plotted. Is this a limitation in gnuplot or a
bug??

BR
/Tore Johansson


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On Fri, 21 May 2004 sa...@em... wrote:

> Can you please tell me what the maximum file size restrictions are for
> visualization of a data file using a splot command. 

"The sky's the limit", as they say.

In more scientific terms: there's no fixed limit on file size imposed by
gnuplot.  The only effective limit is given by the amount of RAM you can
make available to gnuplot.  Depending on the plotting mode you show, each
datapoint will consume a fixed amount of storage.  As long as all of that
fits into your main memory, you'll be fine.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

Hello

Can you please tell me what the maximum file size restrictions are for
visualization of a data file using a splot command. I need to know that for my
thesis defense.

I would really appreciate if you could tell give me the relevant information

Thank you
salil

[Note: mailing list changed to the new one --- old one causes delays
because all redirected posts from dartmouth have to be approved
individually...]

On Wed, 19 May 2004, Dan Jacobson wrote:

> H> 	set size square
> H> 	set ticslevel 0
> 
> Odd that you squash by default. A rather one sided decision :-)

Not really.  Just remember we're in the plotting business, not in 3D CAD
or solid modelling.  Preservation of aspect ratios comes second to getting
good plots that use as much of the available real estate on screen and
on paper as possible.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

On Wed, 19 May 2004, Francy wrote:

> How can I save a graphic of 'plot datafile'?

You don't exactly just "save" it.  You create it again, this time to
a file-based terminal driver you choose.  In the simplest of all cases:

	set term push  # remember what it was
	set term png ; set out 'myplot.png'  # turn to PNG creation
	replot
	set out ; set term pop  # return to screen terminal

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

How can I save a graphic of 'plot datafile'?
Thanks.
Francesca

H> [Please restrict yourself to posting to *one* mailing list.  

I was guessing that it was another project that bounces bugs from
non-subscribers, so I tried full power mode. Glad to know that isn't
the case.

H> best be done as a demo script.
good idea

>> Splotting a sphere looks squashed.

H> 	set size square
H> 	set ticslevel 0

Odd that you squash by default. A rather one sided decision :-)

H> In spite of the docs saying 'set size square' doesn't affect 3D plots, it
H> does.

glad I didn't RTFM.
Ok, instant sphere on Debian
#show _evenly spaced_ points on a sphere
dxfsphere 5|dxf2vrml|
perl -nlwe "BEGIN{print q{unset key;set size square;set ticslevel 0;splot '-'}};
print if (/point/../Indexed/)&&/\d/"|
gnuplot -persist #not from emacs' compile mode though still

Hi Dave,
I do not entirely understand your issue. You have a C program generating da=
ta=20
(i.e. threed.dat) having a subroutine writing a plotfile for gnuplot (i.e.=
=20
threed.plt) and then do a
system ("gnuplot threed.plt");
and this does not work?
Or is your problem related to the three-D plotting?
Please give more information to help!
Take care


Dieter

Am Montag, 17. Mai 2004 21:47 schrieb Dave Anderson:
> Hi,
> I am trying to use gnuplot to output 3-dimensional images from a C progra=
m,
***

=2D-=20
=2D----------------------------------------------------------

                               |
                                \
                 /\_/\           |
                | ~x~ |/-----\   /
                 \   /-       \_/
  ^^__   _        /  _  ____   /
 <=B0=B0__ \- \_/     |  |/    |  |
  ||  ||         _| _|    _| _|

if you really want to see the pictures above - use some font
with constant spacing like courier! :-)
=2D----------------------------------------------------------

On Tue, 18 May 2004, Lauren Clarke wrote:

> Interesting idea... If no one sees any immediate roadblocks to this, I might
> just try it. 
> 
> I'm not all that familiar with the innards of gnuplot, but have utilized
> cygwin before. Anyone have any hunches which environment (mingw, or cygwin)
> would be the most likely to yield results?

Either will, because they're essentially the same thing.  You can use the
Win32+X11 binary provided on our download sites, I think.


-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

Interesting idea... If no one sees any immediate roadblocks to this, I might
just try it. 

I'm not all that familiar with the innards of gnuplot, but have utilized
cygwin before. Anyone have any hunches which environment (mingw, or cygwin)
would be the most likely to yield results?

Thanks Dave.
-lc

> -----Original Message-----
> From: Dave Denholm [mailto:dde...@es...]
> Sent: Tuesday, May 18, 2004 7:55 AM
> To: Lauren Clarke
> Cc: gnu...@li...
> Subject: Re: [Gnuplot-info] Gathering Errors in Batch mode
> 
> "Lauren Clarke" <la...@co...> writes:
> 
> > Hi All,
> >
> > Apologies if this is an FAQ, but I'm in the process of integrating
> version 4
> > into our gnuplot-enabled web applications and have the same question I
> had
> > back in 2000 (on ver 3.7).
> >
> > When running on MS Windows, is there any mechanism whereby the errors
> that
> > would be displayed in interactive mode (with LOAD), can be sent to a
> file
> > when running in batch mode? Or, perhaps more simply, what is the proper
> way
> > to get error messages in batch mode?
> >
> 
> If you're running batch mode, and you don't need the windows terminal
> type, have you considered (trying to) build a mingw or cygwin version
> of gnuplot. This may behave more like you'd expect.
> 
> 
> dd
> --
> Dave Denholm              <dde...@es...>
> http://www.esmertec.com

"Lauren Clarke" <la...@co...> writes:

> Hi All, 
>
> Apologies if this is an FAQ, but I'm in the process of integrating version 4
> into our gnuplot-enabled web applications and have the same question I had
> back in 2000 (on ver 3.7).
>
> When running on MS Windows, is there any mechanism whereby the errors that
> would be displayed in interactive mode (with LOAD), can be sent to a file
> when running in batch mode? Or, perhaps more simply, what is the proper way
> to get error messages in batch mode?
>

If you're running batch mode, and you don't need the windows terminal
type, have you considered (trying to) build a mingw or cygwin version
of gnuplot. This may behave more like you'd expect.


dd
-- 
Dave Denholm              <dde...@es...>       http://www.esmertec.com

On Mon, 17 May 2004, Dan Jacobson wrote:

[Please restrict yourself to posting to *one* mailing list.  
Cross-posting is bad enough in Usenet, we really don't need it in mailing
lists.]

> Maybe as quick way to find how to adjust different parts of a graph,
> there should be distributed in the docs some .png files with arrows
> pointing to each part of a graph, with names of that part.

That could be *very* hard to do, given the large number of output format
the documentation is available in.  Supplying it as a generatable 
plot like the 'test' page, might work better.  Actually, it'd probably
best be done as a demo script.

> E.g. it took me an hour to find out the name of the part that was
> bothering me was "key", I needed to unset "key", and not "title",
> "label" etc.

"help glossary" would have gotten you there a lot faster ;-|

> Splotting a sphere looks squashed.  I don't know how you can convey
> whatever one needs to do to unsquash it on the diagram I call for
> above, unless it is axis related...

That would be impossible to show in a single page, anyway.  The solution
is

	set size square
	set ticslevel 0

In spite of the docs saying 'set size square' doesn't affect 3D plots, it
does.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

On Mon, 17 May 2004, Dave Anderson wrote:

> Hi,
> I am trying to use gnuplot to output 3-dimensional images from a C program, 
> but am having little success in doing so.  Any help would be greatly 
> appreciated,

It's hard, if not impossible, to help without knowing where exactly
your problem is.  Tell us what you tried, and how it fails.  Knowing
the platform you're on might help, too.


-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

Maybe as quick way to find how to adjust different parts of a graph,
there should be distributed in the docs some .png files with arrows
pointing to each part of a graph, with names of that part.

E.g. it took me an hour to find out the name of the part that was
bothering me was "key", I needed to unset "key", and not "title",
"label" etc.

Splotting a sphere looks squashed.  I don't know how you can convey
whatever one needs to do to unsquash it on the diagram I call for
above, unless it is axis related...

Hi,
I am trying to use gnuplot to output 3-dimensional images from a C program, 
but am having little success in doing so.  Any help would be greatly 
appreciated,
Thanks,
-Dave

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On Sun, 16 May 2004 li...@co... wrote:

> At this point, I'm not sure if it's the OS or wgnuplot_pipes. 

The latter.  The OS (or more precisely: the command line shell) should
know what to do with 2>.

> Are there any docs for wgnuplot_pipes, or shall I inspect the source?

I'm not aware of any docs other than what Petr may have put into the
README of the binary package.

> Given what I've read about wgnuplot_pipes, it seems like this would be a
> pretty standard use-case, it's a shame to have my hopes dashed at this
> point, but I've lived this long without it, I suppose I can continue ;-).

Actually, the major use case is to have a gnuplot on Windows that supports
piping from within, as in back-tick expansion, data file filtering and
output to pipes:

	set title `my_title_generator`
	set out "| lpr -P myprinter"
	plot '< awk -f myscript datafile'

The fact that it causes wgnuplot to display a console is a side-effect
of the actual modification.

In the end, I suspect we'ld have to rewrite large parts of, possibly the
entire MS Windows text output routines in gnuplot (i.e. src/win/wtext.c).
I once started down that road, but never made it very far, and didn't 
publish the results.

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

Hi Hans-Bernhard, 

Thanks for the quick reply. 

If, by "redirect its stderr the usual way" you mean something like:

wgnuplot_pipes test.gnu 2>errors.txt

I'm not getting it to work. In the case above, I get an empty errors.txt
file (regardless of whether the test.gnu has an error or not). 

At this point, I'm not sure if it's the OS or wgnuplot_pipes. Are there any
docs for wgnuplot_pipes, or shall I inspect the source?

Given what I've read about wgnuplot_pipes, it seems like this would be a
pretty standard use-case, it's a shame to have my hopes dashed at this
point, but I've lived this long without it, I suppose I can continue ;-).

-lc

> -----Original Message-----
> From: gnu...@li... [mailto:gnuplot-info-
> ad...@li...] On Behalf Of Hans-Bernhard Broeker
> Sent: Saturday, May 15, 2004 4:17 PM
> To: Lauren Clarke
> Cc: gnu...@li...
> Subject: Re: [Gnuplot-info] Gathering Errors in Batch mode
> 
> On Sat, 15 May 2004, Lauren Clarke wrote:
> 
> > When running on MS Windows, is there any mechanism whereby the errors
> that
> > would be displayed in interactive mode (with LOAD), can be sent to a
> file
> > when running in batch mode? Or, perhaps more simply, what is the proper
> way
> > to get error messages in batch mode?
> 
> If you use wgnuplot_pipes.exe from the distributed Win32 binary package, I
> think you can just redirect its stderr the usual way.  If not, then I
> would presume it's still just as impossible as it always was. ;-(
> 
> --
> Hans-Bernhard Broeker (br...@ph...)
> Even if all the snow were burnt, ashes would remain.
> 
> 
> 
> 
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On Sat, 15 May 2004, Lauren Clarke wrote:

> When running on MS Windows, is there any mechanism whereby the errors that
> would be displayed in interactive mode (with LOAD), can be sent to a file
> when running in batch mode? Or, perhaps more simply, what is the proper way
> to get error messages in batch mode?

If you use wgnuplot_pipes.exe from the distributed Win32 binary package, I 
think you can just redirect its stderr the usual way.  If not, then I
would presume it's still just as impossible as it always was. ;-(

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.