gnuplot-bugs Mailing List for gnuplot

Sorry. After restarting gnuplot fresh (I keep piping to the same
instance of gnuplot for hours) and careful placing of set output (in
my script), everything works. Thanks for the great work btw.


From: Slava <s.v...@gm...>
Date: Tue, Feb 16, 2010 at 6:10 PM
Subject: multiplot environment in epslatex terminal
To: gnu...@li...


subj is not functional.
to reproduce the bug go to
http://t16web.lanl.gov/Kawano/gnuplot/gallery/nup.html (not so faq
gnuplot gallery) and modify the script:

[1]+set terminal epslatex color blacktext enhanced input solid;
[1]-set terminal postscript eps enhanced color solid
[2]+set output "nup.tex";
[2]-set output "nup.ps"

pipe it to the gnuplot and get.... small figure is empty!

-- version info --
gnuplot 4.2.6, compiled with gcc -02 -fomit-frame-pointer
-march=native (or something like this, do not think it matters much
here),  on linux 2.6.31

subj is not functional.
to reproduce the bug go to
http://t16web.lanl.gov/Kawano/gnuplot/gallery/nup.html (not so faq
gnuplot gallery) and modify the script:

[1]+set terminal epslatex color blacktext enhanced input solid;
[1]-set terminal postscript eps enhanced color solid
[2]+set output "nup.tex";
[2]-set output "nup.ps"

pipe it to the gnuplot and get.... small figure is empty!

-- version info --
gnuplot 4.2.6, compiled with gcc -02 -fomit-frame-pointer
-march=native (or something like this, do not think it matters much
here),  on linux 2.6.31

Hi,

The built-in function 'ibeta()' may have two problem, GNUPLOT 4.2.6 and 4.4.0rc1(Linux).

Type these two lines and see the result,
set logscale y
plot[0:0.10] ibeta(10.0,500.0,x)
---

This result has two plobrem.

(1)The built in function, ibeta(10,500,x), returns 2 at 0.02<x<0.07.

See "src/specfun.c".

The function 'confrac()' returns -1 at error, 
but the function 'ibeta()', that calls 'confrac()', returns -1 or 2.

>static double
>ibeta(double a, double b, double x)
>{
>    ...
>    /* Swap a, b if necessary for more efficient evaluation */
>    return a < x * (a + b) ? 1.0 - confrac(b, a, 1.0 - x) : confrac(a, b, x);


(2) The function 'ibeta()' returns "undefined value" for right(valid) arguments.

See "src/specfun.c".

At first, the function 'confrac()' returns an error status when Ahi=0.
At second, the variable 'Ahi' may be 0 when log(Ahi) is not too small.

>    /* Set up continued fraction expansion evaluation. */
>    Ahi = gp_exp(GAMMA(Apb) + a * log(x) + b * log(1.0 - x) -
>		 GAMMA(a + 1.0) - GAMMA(b));

Thanks,
Garap

if this extra point is in the upper right corner, it may belong
to the key, try 'set key off' or 'unset key'


David Li-10 wrote:
> 
> Hi,
> 
> When I plot a file like "output.plot" which has two columns of data points
> like:
> 
> 1.1 2.6
> 2.3 4.5
> 6.7 5.4
> ...
> 
> using the code plot "output.plot", I always get an extra point on the
> right
> side of the output plot screen.  I get the same problem using both
> gp426win32 and gp440rc1_win.  I am running Windows Vista 64-bit.
> 
> Thanks,
> David
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View this message in context: http://old.nabble.com/-Gnuplot-bugs--Gnuplot-plot-has-extra-data-point-tp27508394p27511651.html
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Hi,

When I plot a file like "output.plot" which has two columns of data points
like:

1.1 2.6
2.3 4.5
6.7 5.4
...

using the code plot "output.plot", I always get an extra point on the right
side of the output plot screen.  I get the same problem using both
gp426win32 and gp440rc1_win.  I am running Windows Vista 64-bit.

Thanks,
David