gnuplot-info — For questions and discussion about gnuplot

Re: [Gnuplot-info] Configurable FP precision (Re: accuracy in calculation)

[David L. <da...@la...>]

myh apologies, I got this mixed up with a different mailing list (for some 
reason I thought this was the grbl mailing list which runs on the arduino 
boards), so ignore my comment.

David Lang

  On Sat, 13 Apr 2019, Nikita Zlobin via 
gnuplot-info wrote:

> Date: Sat, 13 Apr 2019 16:54:56 +0500
> From: Nikita Zlobin via gnuplot-info <gnu...@li...>
> Reply-To: Nikita Zlobin <coo...@ma...>
> To: gnu...@li...
> Subject: Re: [Gnuplot-info] Configurable FP precision (Re: accuracy in
>     calculation)
> 
> On Sat, 13 Apr 2019 03:46:28 -0700 (PDT)
> David Lang <da...@la...> wrote:
>
>> unfortunantly the arduino doesn't support double precision floats (if
>> you define something as double, it still uses single)
>>
>> so to get better precision, you would hvae to stop using hardware
>> supported data types and switch to a multi-precision software library
>> or something like that.
>>
>> David Lang
>
> My proposal is not about to force some specific type. It is rather
> about ability to make it configurable. Wether target platform supports
> only single float or more precise choices are supported, it could be
> configured by build system.
>
> But anyway thanks for remark - i really thought, that double is default
> type in gnuplot code. Can't remember is it so - but when i made
> experiment, writing gnuplot plugin, performing calculations with
> libqalculate engine, i needed to look into gnuplot code to understand
> some things.
>
> And by own experience with qalculate - multiple precision stuff is
> really slow. Nearly year ago (as said above, but more) i tried to write
> glue plugin for gnuplot, which allowes to use libqalculate as
> calculation engine, instead of plain glibc/libm. Main workflow with it
> is to preload symbolic expressions into plugin, so that it prepares
> them, then just call them by their ID, with necessary arguments.
> https://github.com/nick87720z/gnuplot-qalc-plugin
>
> The precision is probably overkill, and initially it was created in
> hope to be good addon for qalculate itself, which uses gnuplot for
> plotting, but it rather prepares static data set, then runs gnuplot
> with them - thus gnuplot has adequate interface reaction, but range is
> predefined before rendering and can't be changed without new render.
>
> With current performance i'm not sure it will make it in qalculate
> itself, though might be found useful on some super-pc, dedicated for
> something i would call Bigcalc (workplay after bigdata).
>
>
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>

Re: [Gnuplot-info] Configurable FP precision (Re: accuracy in calculation)

[Nikita Z. <coo...@ma...>]

On Sat, 13 Apr 2019 03:46:28 -0700 (PDT)
David Lang <da...@la...> wrote:

> unfortunantly the arduino doesn't support double precision floats (if
> you define something as double, it still uses single)
> 
> so to get better precision, you would hvae to stop using hardware
> supported data types and switch to a multi-precision software library
> or something like that.
> 
> David Lang

My proposal is not about to force some specific type. It is rather
about ability to make it configurable. Wether target platform supports
only single float or more precise choices are supported, it could be
configured by build system.

But anyway thanks for remark - i really thought, that double is default
type in gnuplot code. Can't remember is it so - but when i made
experiment, writing gnuplot plugin, performing calculations with
libqalculate engine, i needed to look into gnuplot code to understand
some things.

And by own experience with qalculate - multiple precision stuff is
really slow. Nearly year ago (as said above, but more) i tried to write
glue plugin for gnuplot, which allowes to use libqalculate as
calculation engine, instead of plain glibc/libm. Main workflow with it
is to preload symbolic expressions into plugin, so that it prepares
them, then just call them by their ID, with necessary arguments.
https://github.com/nick87720z/gnuplot-qalc-plugin

The precision is probably overkill, and initially it was created in
hope to be good addon for qalculate itself, which uses gnuplot for
plotting, but it rather prepares static data set, then runs gnuplot
with them - thus gnuplot has adequate interface reaction, but range is
predefined before rendering and can't be changed without new render.

With current performance i'm not sure it will make it in qalculate
itself, though might be found useful on some super-pc, dedicated for
something i would call Bigcalc (workplay after bigdata).

Re: [Gnuplot-info] Configurable FP precision (Re: accuracy in calculation)

[David L. <da...@la...>]

unfortunantly the arduino doesn't support double precision floats (if you define 
something as double, it still uses single)

so to get better precision, you would hvae to stop using hardware supported data 
types and switch to a multi-precision software library or something like that.

David Lang

[Gnuplot-info] Configurable FP precision (Re: accuracy in calculation)

[Nikita Z. <coo...@ma...>]

On Wed, 10 Apr 2019 09:56:07 -0700
sfeam <eam...@gm...> wrote:

> On Wednesday, 10 April 2019 18:11:19 Patrick Dupre wrote:
> > Hello,
> >  
> > I guess that it may be a good illustration of what I get.
> > running under gnuplot
> >  
> > I={0,1}
> > set sample 1001
> > sqrt_pi = sqrt (pi)
> > sqrt_ln2 = sqrt (log(2))
> > z_ (x, wL, wG) = (x + I * abs (wL)) / wG
> > w_ (z, wG) = faddeeva (z) / wG / sqrt_pi
> > w_prim (z, wG) = (-2 * z * w_ (z, wG) + 2 * I / pi / wG) / wG
> > dd_Fadd (x, wL, wG) = (wGG = abs (wG) / sqrt_ln2, z = z_ (x, wL,
> > wGG), -2 * (w_ (z, wGG) / wGG + z * w_prim (z, wGG)) / wGG) plot
> > [-1000:1000] real (dd_Fadd (x, 270, 0.206)) plot [-1000:1000] real
> > (dd_Fadd (x, 270, 0.106))  
> 
> Since I am not familiar with these functions, I do not know what to
> look for or what to expect.
>   
> You say "the difference should never be zero even if it is close to
> 1e-10" That indeed is what seems to result from plotting
> 
>     abs( real (dd_Fadd (x, 270, 0.206)) -  real (dd_Fadd (x, 270,
> 0.106)))
> 
> Have I misunderstood the description?
> 
> 	Ethan
> 
> 

This side is possible to improve by adding build configuration option
to change FP type. Of course some options may be meaningless or
unavailable on some platforms (gcc targets), so i describe it with
x86_64 in mind.

I did own experiment while writing audio spectrum analyzer. For now it
is some playground for my experiments, and among them i tried
configurable FP type in hope it will enhance fftw analyzis precision,
since this library has all implementations - for float, double, long
double, quad (using gcc libquadmath).

Now about numeric FP type configuration.
config.h:
#define FFT_PRECISION <N>
where <N> - integer in range 1..3.

common.h:
#if FFT_PRECISION == 1
    typedef float real_t;
    #define real_rsize (sizeof(real_t))
    #define M_PIf M_PI
    #define REAL_EPSILON FLT_EPSILON
#elif FFT_PRECISION == 2
    typedef double real_t;
    #define real_rsize (sizeof(sample_t))
    #define fabsf      fabs
    #define fmodf      fmod
......
    #define crealf     creal
    #define cimagf     cimag
    #define nextafterf nextafter

    #define M_PIf M_PI
    #define REAL_EPSILON DBL_EPSILON
......
#elif FFT_PRECISION == 3
    typedef long double real_t;
.....
    #define cimagf     cimagl
    #define nextafterf nextafterl

    #define FLT_EPSILON LDBL_EPSILON

    #ifdef _GNU_SOURCE
        #define M_PIf M_PIl
    #else
        #define M_PIf M_PI
    #endif
#elif FFT_PRECISION == 4
    typedef float128 real_t;
    /* or typedef __float128 real_t */
.....
    #define cimagf     cimagq
    #define nextafterf nextafterq

    #ifdef _GNU_SOURCE
        #define M_PIf M_PIq
    #else
        #define M_PIf M_PI
    #endif
#end /* FFT_PRECISION */

This way proposes to use all math functions and other type-dependant
names with mandatory prefix. Prefix 'f' (sinf, absf) is selected
because name 'float' is more common than 'double' (d).

One implementation drawback here is that all float-specific names
(sinf, absf) become affected by configuration even when they should not
(if you eventually happen to use float type). It is ok, if no math used
with other than real_t data, but it might be worth to use own
'r' (real) prefix: absr, sinr, M_PIr...

I'm sure, this would be give huge precision boost, remembering that each
single bit adds 2x precision. __float128 of course is probably going to
be slower than 'long double', yet may be supported not everywhere, but
it looks excellent compromise between fixed-width language types and
multiple precision frameworks.

Once this configurable FP type system is established, it is possible in
future to easily add wider types, as they appear (if not yet exist).
For case, if one such new type will be called 'real' (using 'r'
prefix), would be better, if separate prefix is preferable, use
something more specific, e.g. gpfloat ('gpf' prefix).

Re: [Gnuplot-info] accuracy in calculation

[sfeam <eam...@gm...>]

On Wednesday, 10 April 2019 18:11:19 Patrick Dupre wrote:
> Hello,
>  
> I guess that it may be a good illustration of what I get.
> running under gnuplot
>  
> I={0,1}
> set sample 1001
> sqrt_pi = sqrt (pi)
> sqrt_ln2 = sqrt (log(2))
> z_ (x, wL, wG) = (x + I * abs (wL)) / wG
> w_ (z, wG) = faddeeva (z) / wG / sqrt_pi
> w_prim (z, wG) = (-2 * z * w_ (z, wG) + 2 * I / pi / wG) / wG
> dd_Fadd (x, wL, wG) = (wGG = abs (wG) / sqrt_ln2, z = z_ (x, wL, wGG), -2 * (w_ (z, wGG) / wGG + z * w_prim (z, wGG)) / wGG)
> plot [-1000:1000] real (dd_Fadd (x, 270, 0.206))   
> plot [-1000:1000] real (dd_Fadd (x, 270, 0.106))

Since I am not familiar with these functions, I do not know what to
look for or what to expect.
  
You say "the difference should never be zero even if it is close to 1e-10"
That indeed is what seems to result from plotting

    abs( real (dd_Fadd (x, 270, 0.206)) -  real (dd_Fadd (x, 270, 0.106)))

Have I misunderstood the description?

	Ethan


> ===========================================================================
> Patrick DUPRÉ | | email: pd...@gm...
> Laboratoire interdisciplinaire Carnot de Bourgogne
> 9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE
> Tel: +33 (0)380395988
> ===========================================================================
>  
>  
> Sent: Tuesday, April 09, 2019 at 10:04 PM
> From: "Ethan Merritt" <eam...@gm...>
> To: "Patrick Dupre" <pd...@gm...>
> Subject: Re: [Gnuplot-info] accuracy in calculation
> Your attachments did not make it through to me. Perhaps you could ask again and
> show the function code in-line with the mail?
>  
>   Ethan
>  
> On Tue, Apr 9, 2019 at 11:36 AM Patrick Dupre <pd...@gm...> wrote:
> Hello,
> 
> I have an issue when I take the difference between 2 functions (see attached
> files).
> 
> On the first one, you have the 2 functions, and on the 2nd one you have
> the difference. which should never be zero even if it close to 1e-10
> 
> How can I increase the precision of the calculation?
> 
> I am using gnuplot 5.2
> 
> Thank.
> 
> ===========================================================================
>  Patrick DUPRÉ | | email: pd...@gm...
>  Laboratoire interdisciplinaire Carnot de Bourgogne
>  9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE
>  Tel: +33 (0)380395988
> ===========================================================================
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 

[Gnuplot-info] accuracy in calculation

[Patrick D. <pd...@gm...>]

Hello,

I have an issue when I take the difference between 2 functions (see attached
files).

On the first one, you have the 2 functions, and on the 2nd one you have
the difference. which should never be zero even if it close to 1e-10

How can I increase the precision of the calculation?

I am using gnuplot 5.2

Thank.

===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire interdisciplinaire Carnot de Bourgogne
 9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE
 Tel: +33 (0)380395988
===========================================================================

Re: [Gnuplot-info] ormat must have 1-7 conversions of type double (%lf)

[sfeam <eam...@gm...>]

On Sunday, 07 April 2019 23:42:02 Patrick Dupre wrote:
> Hello,
> 
> When I do:
>  plot "scan_random5_4_2019_024.txt" u ($1):($7):($2) '%lf %lf %lf %lf %lf %lf %lf'
> the plot is OK
> when I do:
> plot "scan_random5_4_2019_024.txt" u ($1):($7):($2):($8) '%lf %lf %lf %lf %lf %lf %lf %lf'
> I get:
> format must have 1-7 conversions of type double (%lf)
> 
> The error seems due to the number of columns (here 8) that I have in my file
> They are separate by a \t
> 
> How can I avoid this error ?

If the fields are separated by tabs you don't need to provide a format.

    set datafile separator tab
    plot "scan_random5_4_2019_024.txt" u 1:7:2:8

In fact if the fields do not contain embedded space characters you don't even 
need the "set datafile separator" command.

	cheers,

		Ethan

[Gnuplot-info] ormat must have 1-7 conversions of type double (%lf)

[Patrick D. <pd...@gm...>]

Hello,

When I do:
 plot "scan_random5_4_2019_024.txt" u ($1):($7):($2) '%lf %lf %lf %lf %lf %lf %lf'
the plot is OK
when I do:
plot "scan_random5_4_2019_024.txt" u ($1):($7):($2):($8) '%lf %lf %lf %lf %lf %lf %lf %lf'
I get:
format must have 1-7 conversions of type double (%lf)

The error seems due to the number of columns (here 8) that I have in my file
They are separate by a \t

How can I avoid this error ?

Thank.


===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire interdisciplinaire Carnot de Bourgogne
 9 Avenue Alain Savary, BP 47870, 21078 DIJON Cedex FRANCE
 Tel: +33 (0)380395988
===========================================================================

[Gnuplot-info] scatter plot

[maya n. <may...@gm...>]

I have three column PCA data generated in amber in .gnu format (first 3
columns in the given data) . How can I plot this data. I am new to gnuplot.
If anybody can help, it will be greatly appreciated. Part of the data given
for reference.
Thanks

Maya

complex:1 complex:2 complex:3 complex_1_2_3
 -43.210  -21.629  -32.325        0.0000
 -42.530  -21.629  -32.325        0.0000
 -41.850  -21.629  -32.325        0.0000
 -41.170  -21.629  -32.325        0.0000
 -40.491  -21.629  -32.325        0.0000
 -39.811  -21.629  -32.325        0.0000
 -39.131  -21.629  -32.325        0.0000
 -38.451  -21.629  -32.325        0.0000
 -37.772  -21.629  -32.325        0.0000
 -37.092  -21.629  -32.325        0.0000
 -36.412  -21.629  -32.325        0.0000
 -35.732  -21.629  -32.325        0.0000
 -35.052  -21.629  -32.325        0.0000
 -34.373  -21.629  -32.325        0.0000
 -33.693  -21.629  -32.325        0.0000
 -33.013  -21.629  -32.325        0.0000
 -32.333  -21.629  -32.325        0.0000
 -31.654  -21.629  -32.325        0.0000
 -30.974  -21.629  -32.325        0.0000
 -30.294  -21.629  -32.325        0.0000
 -29.614  -21.629  -32.325        0.0000
 -28.935  -21.629  -32.325        0.0000
 -28.255  -21.629  -32.325        0.0000
 -27.575  -21.629  -32.325        0.0000
 -26.895  -21.629  -32.325        0.0000
 -26.216  -21.629  -32.325        0.0000
 -25.536  -21.629  -32.325        0.0000
 -24.856  -21.629  -32.325        0.0000
 -24.176  -21.629  -32.325        0.0000
 -23.497  -21.629  -32.325        0.0000
 -22.817  -21.629  -32.325        0.0000
 -22.137  -21.629  -32.325        0.0000
 -21.457  -21.629  -32.325        0.0000
 -20.777  -21.629  -32.325        0.0000
 -20.098  -21.629  -32.325        0.0000
 -19.418  -21.629  -32.325        0.0000
 -18.738  -21.629  -32.325        0.0000
 -18.058  -21.629  -32.325        0.0000
 -17.379  -21.629  -32.325        0.0000
 -16.699  -21.629  -32.325        0.0000
 -16.019  -21.629  -32.325        0.0000
 -15.339  -21.629  -32.325        0.0000
 -14.660  -21.629  -32.325        0.0000
 -13.980  -21.629  -32.325        0.0000
 -13.300  -21.629  -32.325        0.0000
 -12.620  -21.629  -32.325        0.0000
 -11.941  -21.629  -32.325        0.0000
 -11.261  -21.629  -32.325        0.0000
 -10.581  -21.629  -32.325        0.0000
  -9.901  -21.629  -32.325        0.0000
  -9.222  -21.629  -32.325        0.0000
  -8.542  -21.629  -32.325        0.0000
  -7.862  -21.629  -32.325        0.0000
  -7.182  -21.629  -32.325        0.0000
  -6.502  -21.629  -32.325        0.0000
  -5.823  -21.629  -32.325        0.0000
  -5.143  -21.629  -32.325        0.0000
  -4.463  -21.629  -32.325        0.0000
  -3.783  -21.629  -32.325        0.0000
  -3.104  -21.629  -32.325        0.0000
  -2.424  -21.629  -32.325        0.0000
  -1.744  -21.629  -32.325        0.0000
  -1.064  -21.629  -32.325        0.0000
  -0.385  -21.629  -32.325        0.0000
   0.295  -21.629  -32.325        0.0000
   0.975  -21.629  -32.325        0.0000
   1.655  -21.629  -32.325        0.0000
   2.334  -21.629  -32.325        0.0000
   3.014  -21.629  -32.325        0.0000
   3.694  -21.629  -32.325        0.0000
   4.374  -21.629  -32.325        0.0000
   5.053  -21.629  -32.325        0.0000
   5.733  -21.629  -32.325        0.0000
   6.413  -21.629  -32.325        0.0000
   7.093  -21.629  -32.325        0.0000
   7.773  -21.629  -32.325        0.0000
   8.452  -21.629  -32.325        0.0000
   9.132  -21.629  -32.325        0.0000
   9.812  -21.629  -32.325        0.0000
  10.492  -21.629  -32.325        0.0000
  11.171  -21.629  -32.325        0.0000
  11.851  -21.629  -32.325        0.0000
  12.531  -21.629  -32.325        0.0000
  13.211  -21.629  -32.325        0.0000
  13.890  -21.629  -32.325        0.0000
  14.570  -21.629  -32.325        0.0000
  15.250  -21.629  -32.325        0.0000
  15.930  -21.629  -32.325        0.0000
  16.609  -21.629  -32.325        0.0000
  17.289  -21.629  -32.325        0.0000
  17.969  -21.629  -32.325        0.0000
  18.649  -21.629  -32.325        0.0000
  19.328  -21.629  -32.325        0.0000
  20.008  -21.629  -32.325        0.0000
  20.688  -21.629  -32.325        0.0000
  21.368  -21.629  -32.325        0.0000
  22.048  -21.629  -32.325        0.0000
  22.727  -21.629  -32.325        0.0000
  23.407  -21.629  -32.325        0.0000
  24.087  -21.629  -32.325        0.0000
 -43.210  -21.116  -32.325        0.0000
 -42.530  -21.116  -32.325        0.0000
 -41.850  -21.116  -32.325        0.0000
 -41.170  -21.116  -32.325        0.0000
 -40.491  -21.116  -32.325        0.0000
 -39.811  -21.116  -32.325        0.0000
 -39.131  -21.116  -32.325        0.0000
 -38.451  -21.116  -32.325        0.0000
 -37.772  -21.116  -32.325        0.0000
 -37.092  -21.116  -32.325        0.0000
 -36.412  -21.116  -32.325        0.0000
 -35.732  -21.116  -32.325        0.0000
 -35.052  -21.116  -32.325        0.0000
 -34.373  -21.116  -32.325        0.0000
 -33.693  -21.116  -32.325        0.0000
 -33.013  -21.116  -32.325        0.0000
 -32.333  -21.116  -32.325        0.0000
 -31.654  -21.116  -32.325        0.0000
 -30.974  -21.116  -32.325        0.0000
 -30.294  -21.116  -32.325        0.0000
 -29.614  -21.116  -32.325        0.0000
 -28.935  -21.116  -32.325        0.0000
 -28.255  -21.116  -32.325        0.0000
 -27.575  -21.116  -32.325        0.0000
 -26.895  -21.116  -32.325        0.0000
 -26.216  -21.116  -32.325        0.0000
 -25.536  -21.116  -32.325        0.0000
 -24.856  -21.116  -32.325        0.0000
 -24.176  -21.116  -32.325        0.0000
 -23.497  -21.116  -32.325        0.0000
 -22.817  -21.116  -32.325        0.0000
 -22.137  -21.116  -32.325        0.0000
 -21.457  -21.116  -32.325        0.0000
 -20.777  -21.116  -32.325        0.0000
 -20.098  -21.116  -32.325        0.0000
 -19.418  -21.116  -32.325        0.0000
 -18.738  -21.116  -32.325        0.0000
 -18.058  -21.116  -32.325        0.0000
 -17.379  -21.116  -32.325        0.0000
 -16.699  -21.116  -32.325        0.0000
 -16.019  -21.116  -32.325        0.0000
 -15.339  -21.116  -32.325        0.0000
 -14.660  -21.116  -32.325        0.0000
 -13.980  -21.116  -32.325        0.0000
 -13.300  -21.116  -32.325        0.0000
 -12.620  -21.116  -32.325        0.0000
 -11.941  -21.116  -32.325        0.0000
 -11.261  -21.116  -32.325        0.0000
 -10.581  -21.116  -32.325        0.0000
  -9.901  -21.116  -32.325        0.0000
  -9.222  -21.116  -32.325        0.0000
  -8.542  -21.116  -32.325        0.0000
  -7.862  -21.116  -32.325        0.0000
  -7.182  -21.116  -32.325        0.0000
  -6.502  -21.116  -32.325        0.0000
  -5.823  -21.116  -32.325        0.0000
  -5.143  -21.116  -32.325        0.0000
  -4.463  -21.116  -32.325        0.0000
  -3.783  -21.116  -32.325        0.0000
  -3.104  -21.116  -32.325        0.0000
  -2.424  -21.116  -32.325        0.0000
  -1.744  -21.116  -32.325        0.0000
  -1.064  -21.116  -32.325        0.0000
  -0.385  -21.116  -32.325        0.0000
   0.295  -21.116  -32.325        0.0000
   0.975  -21.116  -32.325        0.0000
   1.655  -21.116  -32.325        0.0000
   2.334  -21.116  -32.325        0.0000
   3.014  -21.116  -32.325        0.0000
   3.694  -21.116  -32.325        0.0000
   4.374  -21.116  -32.325        0.0000
   5.053  -21.116  -32.325        0.0000
   5.733  -21.116  -32.325        0.0000
   6.413  -21.116  -32.325        0.0000
   7.093  -21.116  -32.325        0.0000
   7.773  -21.116  -32.325        0.0000
   8.452  -21.116  -32.325        0.0000
   9.132  -21.116  -32.325        0.0000
   9.812  -21.116  -32.325        0.0000
  10.492  -21.116  -32.325        0.0000
  11.171  -21.116  -32.325        0.0000
  11.851  -21.116  -32.325        0.0000
  12.531  -21.116  -32.325        0.0000
  13.211  -21.116  -32.325        0.0000



-- 
Maya S Nair
Assistant Professor
Department of Biotechnology
IIT Roorkee
India

Re: [Gnuplot-info] gnuplot random numbers

[theozh <th...@gm...>]

ok. 0 and 1 not included. Thank you for clarification!
Maybe this information could be added into the next version of the manual.

Re: [Gnuplot-info] gnuplot random numbers

[sfeam <eam...@gm...>]

On Wednesday, 27 February 2019 06:47:23 theozh wrote:
> with rand(0) you can generate pseudo-random numbers x in gnuplot.
> According to the manual they are in the interval [0:1]. 
> From this, I would conclude (0 <= x <= 1), i.e. 0 and 1 are included and possible values to appear, correct?

  rand(0) ∈ (0,1)

That is, the endpoints are not included in the range.
>From the source code in internal.c:

/***********************************************************************
     double ranf(double init)
                Random number generator as a Function
     Returns a random floating point number from a uniform distribution
     over 0 - 1 (endpoints of this interval are not returned) using a
     large integer generator.
     This is a transcription from Pascal to Fortran of routine
     Uniform_01 from the paper
     L'Ecuyer, P. and Cote, S. "Implementing a Random Number Package
     with Splitting Facilities." ACM Transactions on Mathematical
     Software, 17:98-111 (1991)


	Ethan

[Gnuplot-info] gnuplot random numbers

[theozh <th...@gm...>]

with rand(0) you can generate pseudo-random numbers x in gnuplot.
According to the manual they are in the interval [0:1]. From this, I would conclude (0 <= x <= 1), i.e. 0 and 1 are included and possible values to appear, correct?
Or maybe (0 <= x < 1) or (0 < x <= 1) or (0 < x < 1) where one or the other or both borders are excluded?

[Gnuplot-info] set nonlinear explanation in manual

[Leoš P. <leo...@gm...>]

The manual says, page 152, nonlinear:
The hidden axis remains linear. Coordinates along the visible axis are mapped by applying g(x) to hidden axis coordinates. f(x) maps the visible axis coordinates back onto the hidden linear axis.

Example:

     set xrange [1:1000]
     set nonlinear x via log10(x) inverse 10**x

I believe it is incorrect, the mapping from the invisible (linear) axis to the visible axis is given by f(x) not g(x) and vice versa for the inverse as is also obvious from the example.
Can someone please confirm this or explain why the statement in the manual should be correct.
Thank you.

Re: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008

[Tatsuro M. <tma...@ya...>]

https://sourceforge.net/p/gnuplot/bugs/2116/#e513/8a1c/a25c

might help for newer version.

wnuplot.ini is text file you can edit by text editor like notepad.

Tatsuro

----- Original Message -----
> From: Christian Jacques <chr...@ra...>
> To: Tait <gnu...@t4...>
> Cc: gnu...@li...
> Date: 2019/2/12, Tue 11:14
> Subject: Re: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008
> 
>T hank you for you reply Tait.
> 
> Based on your feedback I tested different gnuplot versions (64 bit 
> windows installer flavour)  and 4.6.6 seems to be the last one capable 
> of running on Server 2008 SP 2.  Version 5.0.1 suffered from the same 
> problem as 5.2.6.
> 
> I will try 4.6.6 to see if it does what I need.
> 
> Regards,
> 
> Christian
> 
> On 2/11/2019 7:09 PM, Tait wrote:
>>  Hi Christian,
>> 
>>  The RaiseFailFastException function is not supported on Windows
>>  Server 2008. Server 2008 R2 is the minimum supported version
>>  (see https://msdn.microsoft.com/en-us/library/windows/desktop/dd941688 
> (v=vs.85).aspx),
>>  and thus it appears 2008R2 (on the server side, and 7 on the
>>  desktop side) is also the minimum supported version for gnuplot.
>>  You can probably get by on 2008 with an older version of
>>  gnuplot, from back when XP was supported. I don't know off the
>>  top of my head what version that would correspond to.
>> 
>>  Tait
>> 
>>  Christian Jacques <chr...@ra...> said (on 2019/02/11):
>>>  Date: Mon, 11 Feb 2019 15:58:53 -0500
>>>  From: Christian Jacques <chr...@ra...>
>>>  To: gnu...@li...
>>>  Subject: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows 
> Server 2008
>>> 
>>>  Hello,
>>> 
>>>  I am new to this mailing list so I apologize in advance if I am not
>>>  doing things the way it is expected.
>>> 
>>>  I am presently happily using gnuplot 5.2.6 on my Windows 7 workstation.
>>>  However I need be able to use it on a Windows Server 2008 Service Pack 
> 2
>>>  machine (same code base as Windows Vista) and I get an error message
>>>  whenever I attempt to start gnuplot or wgnuplot:
>>> 
>>>  "The procedure entry point RaiseFailFastException could not be 
> located
>>>  in the dynamic library KERNEL32.DLL"  (see attached screenshot).
>>> 
>>>  I tried both 32 bit and 64 bit installers, (gp526-win64-mingw_2.exe,
>>>  gp526-win32-mingw_2.exe), accepting all default options.  I also
>>>  downloaded the 32 bit and 64 bit complete packages
>>>  (gp526-win64-mingw.7z, gp526-win32-mingw.7z)  but attempts to start
>>>  produced the same results.
>>> 
>>>  Using the Windows Sysinternals Process Monitor I captured all file
>>>  system and registry events from the gnuplot.exe process but that looks
>>>  OK to me.
>>> 
>>>  I am hoping someone can help with this issue.
>>> 
>>>  Thanks,
>>> 
>>>  Christian
>>> 
>>>  _______________________________________________
>>>  gnuplot-info mailing list
>>>  gnu...@li...
>>>  Membership management via: 
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info 
>>> 
> 
> 
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: 
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info 
> 

Re: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008

[Christian J. <chr...@ra...>]

Thank you for you reply Tait.

Based on your feedback I tested different gnuplot versions (64 bit 
windows installer flavour)  and 4.6.6 seems to be the last one capable 
of running on Server 2008 SP 2.  Version 5.0.1 suffered from the same 
problem as 5.2.6.

I will try 4.6.6 to see if it does what I need.

Regards,

Christian

On 2/11/2019 7:09 PM, Tait wrote:
> Hi Christian,
>
> The RaiseFailFastException function is not supported on Windows
> Server 2008. Server 2008 R2 is the minimum supported version
> (see https://msdn.microsoft.com/en-us/library/windows/desktop/dd941688(v=vs.85).aspx),
> and thus it appears 2008R2 (on the server side, and 7 on the
> desktop side) is also the minimum supported version for gnuplot.
> You can probably get by on 2008 with an older version of
> gnuplot, from back when XP was supported. I don't know off the
> top of my head what version that would correspond to.
>
> Tait
>
> Christian Jacques <chr...@ra...> said (on 2019/02/11):
>> Date: Mon, 11 Feb 2019 15:58:53 -0500
>> From: Christian Jacques <chr...@ra...>
>> To: gnu...@li...
>> Subject: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008
>>
>> Hello,
>>
>> I am new to this mailing list so I apologize in advance if I am not
>> doing things the way it is expected.
>>
>> I am presently happily using gnuplot 5.2.6 on my Windows 7 workstation.
>> However I need be able to use it on a Windows Server 2008 Service Pack 2
>> machine (same code base as Windows Vista) and I get an error message
>> whenever I attempt to start gnuplot or wgnuplot:
>>
>> "The procedure entry point RaiseFailFastException could not be located
>> in the dynamic library KERNEL32.DLL"  (see attached screenshot).
>>
>> I tried both 32 bit and 64 bit installers, (gp526-win64-mingw_2.exe,
>> gp526-win32-mingw_2.exe), accepting all default options.  I also
>> downloaded the 32 bit and 64 bit complete packages
>> (gp526-win64-mingw.7z, gp526-win32-mingw.7z)  but attempts to start
>> produced the same results.
>>
>> Using the Windows Sysinternals Process Monitor I captured all file
>> system and registry events from the gnuplot.exe process but that looks
>> OK to me.
>>
>> I am hoping someone can help with this issue.
>>
>> Thanks,
>>
>> Christian
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>

Re: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008

[Christian J. <chr...@ra...>]

Sorry, I meant version 4.6.7 is the last one that seems to be the last 
one capable of running on Server 2008 SP 2.

Regards,

Christian

On 2/11/2019 9:14 PM, Christian Jacques wrote:
> Thank you for you reply Tait.
>
> Based on your feedback I tested different gnuplot versions (64 bit 
> windows installer flavour)  and 4.6.6 seems to be the last one capable 
> of running on Server 2008 SP 2.  Version 5.0.1 suffered from the same 
> problem as 5.2.6.
>
> I will try 4.6.6 to see if it does what I need.
>
> Regards,
>
> Christian
>
> On 2/11/2019 7:09 PM, Tait wrote:
>> Hi Christian,
>>
>> The RaiseFailFastException function is not supported on Windows
>> Server 2008. Server 2008 R2 is the minimum supported version
>> (see 
>> https://msdn.microsoft.com/en-us/library/windows/desktop/dd941688(v=vs.85).aspx),
>> and thus it appears 2008R2 (on the server side, and 7 on the
>> desktop side) is also the minimum supported version for gnuplot.
>> You can probably get by on 2008 with an older version of
>> gnuplot, from back when XP was supported. I don't know off the
>> top of my head what version that would correspond to.
>>
>> Tait
>>
>> Christian Jacques <chr...@ra...> said (on 2019/02/11):
>>> Date: Mon, 11 Feb 2019 15:58:53 -0500
>>> From: Christian Jacques <chr...@ra...>
>>> To: gnu...@li...
>>> Subject: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows 
>>> Server 2008
>>>
>>> Hello,
>>>
>>> I am new to this mailing list so I apologize in advance if I am not
>>> doing things the way it is expected.
>>>
>>> I am presently happily using gnuplot 5.2.6 on my Windows 7 workstation.
>>> However I need be able to use it on a Windows Server 2008 Service 
>>> Pack 2
>>> machine (same code base as Windows Vista) and I get an error message
>>> whenever I attempt to start gnuplot or wgnuplot:
>>>
>>> "The procedure entry point RaiseFailFastException could not be located
>>> in the dynamic library KERNEL32.DLL"  (see attached screenshot).
>>>
>>> I tried both 32 bit and 64 bit installers, (gp526-win64-mingw_2.exe,
>>> gp526-win32-mingw_2.exe), accepting all default options.  I also
>>> downloaded the 32 bit and 64 bit complete packages
>>> (gp526-win64-mingw.7z, gp526-win32-mingw.7z)  but attempts to start
>>> produced the same results.
>>>
>>> Using the Windows Sysinternals Process Monitor I captured all file
>>> system and registry events from the gnuplot.exe process but that looks
>>> OK to me.
>>>
>>> I am hoping someone can help with this issue.
>>>
>>> Thanks,
>>>
>>> Christian
>>>
>>> _______________________________________________
>>> gnuplot-info mailing list
>>> gnu...@li...
>>> Membership management via: 
>>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>>
>

Re: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008

[Tait <gnu...@t4...>]

Hi Christian,

The RaiseFailFastException function is not supported on Windows
Server 2008. Server 2008 R2 is the minimum supported version
(see https://msdn.microsoft.com/en-us/library/windows/desktop/dd941688(v=vs.85).aspx),
and thus it appears 2008R2 (on the server side, and 7 on the
desktop side) is also the minimum supported version for gnuplot.
You can probably get by on 2008 with an older version of
gnuplot, from back when XP was supported. I don't know off the
top of my head what version that would correspond to.

Tait

Christian Jacques <chr...@ra...> said (on 2019/02/11):
> Date: Mon, 11 Feb 2019 15:58:53 -0500
> From: Christian Jacques <chr...@ra...>
> To: gnu...@li...
> Subject: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008
> 
> Hello,
> 
> I am new to this mailing list so I apologize in advance if I am not 
> doing things the way it is expected.
> 
> I am presently happily using gnuplot 5.2.6 on my Windows 7 workstation.  
> However I need be able to use it on a Windows Server 2008 Service Pack 2 
> machine (same code base as Windows Vista) and I get an error message 
> whenever I attempt to start gnuplot or wgnuplot:
> 
> "The procedure entry point RaiseFailFastException could not be located 
> in the dynamic library KERNEL32.DLL"  (see attached screenshot).
> 
> I tried both 32 bit and 64 bit installers, (gp526-win64-mingw_2.exe, 
> gp526-win32-mingw_2.exe), accepting all default options.  I also 
> downloaded the 32 bit and 64 bit complete packages 
> (gp526-win64-mingw.7z, gp526-win32-mingw.7z)  but attempts to start 
> produced the same results.
> 
> Using the Windows Sysinternals Process Monitor I captured all file 
> system and registry events from the gnuplot.exe process but that looks 
> OK to me.
> 
> I am hoping someone can help with this issue.
> 
> Thanks,
> 
> Christian
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 

Re: [Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008

[Tatsuro M. <tma...@ya...>]

--- christian
> Hello,
> 
> I am new to this mailing list so I apologize in advance if I am not 
> doing things the way it is expected.
> 
> I am presently happily using gnuplot 5.2.6 on my Windows 7 workstation.  
> However I need be able to use it on a Windows Server 2008 Service Pack 2 
> machine (same code base as Windows Vista) and I get an error message 
> whenever I attempt to start gnuplot or wgnuplot:
> 
> "The procedure entry point RaiseFailFastException could not be located 
> in the dynamic library KERNEL32.DLL"  (see attached screenshot).
> 
> I tried both 32 bit and 64 bit installers, (gp526-win64-mingw_2.exe, 
> gp526-win32-mingw_2.exe), accepting all default options.  I also 
> downloaded the 32 bit and 64 bit complete packages 
> (gp526-win64-mingw.7z, gp526-win32-mingw.7z)  but attempts to start 
> produced the same results.
> 
> Using the Windows Sysinternals Process Monitor I captured all file 
> system and registry events from the gnuplot.exe process but that looks 
> OK to me.
> 
> I am hoping someone can help with this issue.
> 
> Thanks,
> 
> Christian
> 
I am a package manager of gnuplot for windows. Unfortunately,  I only have PCs with windows 10.

The gnuplot project is voluntary based and cannot give enough support for old OS.

Tatsuro

[Gnuplot-info] gnuplot/wgnuplot launch failure on Windows Server 2008

[Christian J. <chr...@ra...>]

Hello,

I am new to this mailing list so I apologize in advance if I am not 
doing things the way it is expected.

I am presently happily using gnuplot 5.2.6 on my Windows 7 workstation.  
However I need be able to use it on a Windows Server 2008 Service Pack 2 
machine (same code base as Windows Vista) and I get an error message 
whenever I attempt to start gnuplot or wgnuplot:

"The procedure entry point RaiseFailFastException could not be located 
in the dynamic library KERNEL32.DLL"  (see attached screenshot).

I tried both 32 bit and 64 bit installers, (gp526-win64-mingw_2.exe, 
gp526-win32-mingw_2.exe), accepting all default options.  I also 
downloaded the 32 bit and 64 bit complete packages 
(gp526-win64-mingw.7z, gp526-win32-mingw.7z)  but attempts to start 
produced the same results.

Using the Windows Sysinternals Process Monitor I captured all file 
system and registry events from the gnuplot.exe process but that looks 
OK to me.

I am hoping someone can help with this issue.

Thanks,

Christian

Re: [Gnuplot-info] how to send a customized string to linux command in gnuplot

[Jon <dev...@gm...>]

Ethan,

I am curious how you quickly found out the two relevant references
towards my question given such a big volume of archived Q&E? The way
you think might help me to find out what I need in the future.

Thanks,

Sincerely,
John

On 2/11/19, Ethan A Merritt <eam...@gm...> wrote:
> On Monday, 11 February 2019 11:50:12 Jon wrote:
>> Hi,
>>
>> I need to extract a value from each file and combine a column in that
>> file and then plot. The gnuplot script looks something like
>>
>> reset; set macro
>> list="2.35 2.4 2.5 2.6 2.7 "
>> do for [i in list]{
>>   file="/dir/to/".i."/target/file"
>>   cmd="head -n 6 ".@file."  | tail -n 1 | awk '{printf $4}'"
>>   print file
>>   print cmd
>>   ef=system(@cmd)
>>   print ef
>>   plot @file u ($1-ef):2 ev ::7::301 w l ti i
>> }
>
> I do not know the reason for that exact error message,
> but the code shown cannot work as written because it is not possible
> to set and reevaluate macros inside a loop.  See for example
>
>   https://sourceforge.net/p/gnuplot/bugs/1176/
>   https://sourceforge.net/p/gnuplot/mailman/message/32364975/
>
> Fortunately as with issue #1176 there is no need to use macros at all
> in your case. The solution may be as simple as removing all those @ signs.
> I suggest you rewrite the code without macros and report back
> if there is still an error.
>
> 	Ethan
>
>
>
>> The expected screen output is, say,
>> /dir/to/2.35/target/file
>> head -n 6 /dir/to/2.35/target/file | tail -n 1 | awk '{printf $4}'
>> 3.243  (some intended value coming out of linux command, differing at each
>> i)
>> the intended plot with x axis shifted 3.243
>>
>> The execution failed complaining  "invalid expression"
>>
>> Why is the error message? Is this possibly done with gnuplot? I am
>> using gnuplot 5.2.6 on linux mint 8.1 installed in a virtualbox hosted
>> with windows 7
>>
>> Thanks for your help!
>>
>> Sincerely,
>> John
>>
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> Membership management via:
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>
> --
> entia non sunt multiplicanda praeter necessitatem
>

Re: [Gnuplot-info] how to send a customized string to linux command in gnuplot

[Jon <dev...@gm...>]

Hi Ethan,

Thank you very much, it works as expected by removing all @.

Sincerely,
John

On 2/11/19, Ethan A Merritt <eam...@gm...> wrote:
> On Monday, 11 February 2019 11:50:12 Jon wrote:
>> Hi,
>>
>> I need to extract a value from each file and combine a column in that
>> file and then plot. The gnuplot script looks something like
>>
>> reset; set macro
>> list="2.35 2.4 2.5 2.6 2.7 "
>> do for [i in list]{
>>   file="/dir/to/".i."/target/file"
>>   cmd="head -n 6 ".@file."  | tail -n 1 | awk '{printf $4}'"
>>   print file
>>   print cmd
>>   ef=system(@cmd)
>>   print ef
>>   plot @file u ($1-ef):2 ev ::7::301 w l ti i
>> }
>
> I do not know the reason for that exact error message,
> but the code shown cannot work as written because it is not possible
> to set and reevaluate macros inside a loop.  See for example
>
>   https://sourceforge.net/p/gnuplot/bugs/1176/
>   https://sourceforge.net/p/gnuplot/mailman/message/32364975/
>
> Fortunately as with issue #1176 there is no need to use macros at all
> in your case. The solution may be as simple as removing all those @ signs.
> I suggest you rewrite the code without macros and report back
> if there is still an error.
>
> 	Ethan
>
>
>
>> The expected screen output is, say,
>> /dir/to/2.35/target/file
>> head -n 6 /dir/to/2.35/target/file | tail -n 1 | awk '{printf $4}'
>> 3.243  (some intended value coming out of linux command, differing at each
>> i)
>> the intended plot with x axis shifted 3.243
>>
>> The execution failed complaining  "invalid expression"
>>
>> Why is the error message? Is this possibly done with gnuplot? I am
>> using gnuplot 5.2.6 on linux mint 8.1 installed in a virtualbox hosted
>> with windows 7
>>
>> Thanks for your help!
>>
>> Sincerely,
>> John
>>
>>
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> Membership management via:
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>
> --
> entia non sunt multiplicanda praeter necessitatem
>

Re: [Gnuplot-info] how to send a customized string to linux command in gnuplot

[Ethan A M. <eam...@gm...>]

On Monday, 11 February 2019 11:50:12 Jon wrote:
> Hi,
> 
> I need to extract a value from each file and combine a column in that
> file and then plot. The gnuplot script looks something like
> 
> reset; set macro
> list="2.35 2.4 2.5 2.6 2.7 "
> do for [i in list]{
>   file="/dir/to/".i."/target/file"
>   cmd="head -n 6 ".@file."  | tail -n 1 | awk '{printf $4}'"
>   print file
>   print cmd
>   ef=system(@cmd)
>   print ef
>   plot @file u ($1-ef):2 ev ::7::301 w l ti i
> }

I do not know the reason for that exact error message, 
but the code shown cannot work as written because it is not possible
to set and reevaluate macros inside a loop.  See for example
 
  https://sourceforge.net/p/gnuplot/bugs/1176/
  https://sourceforge.net/p/gnuplot/mailman/message/32364975/

Fortunately as with issue #1176 there is no need to use macros at all
in your case. The solution may be as simple as removing all those @ signs. 
I suggest you rewrite the code without macros and report back
if there is still an error.

	Ethan



> The expected screen output is, say,
> /dir/to/2.35/target/file
> head -n 6 /dir/to/2.35/target/file | tail -n 1 | awk '{printf $4}'
> 3.243  (some intended value coming out of linux command, differing at each i)
> the intended plot with x axis shifted 3.243
> 
> The execution failed complaining  "invalid expression"
> 
> Why is the error message? Is this possibly done with gnuplot? I am
> using gnuplot 5.2.6 on linux mint 8.1 installed in a virtualbox hosted
> with windows 7
> 
> Thanks for your help!
> 
> Sincerely,
> John
> 
> 
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info

-- 
entia non sunt multiplicanda praeter necessitatem

[Gnuplot-info] how to send a customized string to linux command in gnuplot

[Jon <dev...@gm...>]

Hi,

I need to extract a value from each file and combine a column in that
file and then plot. The gnuplot script looks something like

reset; set macro
list="2.35 2.4 2.5 2.6 2.7 "
do for [i in list]{
  file="/dir/to/".i."/target/file"
  cmd="head -n 6 ".@file."  | tail -n 1 | awk '{printf $4}'"
  print file
  print cmd
  ef=system(@cmd)
  print ef
  plot @file u ($1-ef):2 ev ::7::301 w l ti i
}

The expected screen output is, say,
/dir/to/2.35/target/file
head -n 6 /dir/to/2.35/target/file | tail -n 1 | awk '{printf $4}'
3.243  (some intended value coming out of linux command, differing at each i)
the intended plot with x axis shifted 3.243

The execution failed complaining  "invalid expression"

Why is the error message? Is this possibly done with gnuplot? I am
using gnuplot 5.2.6 on linux mint 8.1 installed in a virtualbox hosted
with windows 7

Thanks for your help!

Sincerely,
John

Re: [Gnuplot-info] GnuPlot on Gretl

[Tatsuro M. <tma...@ya...>]

There are no offical binaries of gnuplot for mac.
Official page only introduces 3rd party binaries.

Thus, unfortunately the possiblity that you can get useful imformation here in not high.

Tatsuro




----- Original Message -----
> From: valerie von arx via gnuplot-info <gnu...@li...>
> To: gnu...@li...
> Cc: 
> Date: 2019/2/7, Thu 02:18
> Subject: [Gnuplot-info] GnuPlot on Gretl
> 
> Hi guys,
> 
> I am using GRETL for my econometric analysis, which relies on gnu plot for any 
> kind of graphic visualisation e.g. graphs/distributions etc.
> I already worked in the past with gretl+gnuplot and was working perfectly. 
> Suddenly, today when i tried to graph something the software told me:
> 
> “ Gnuplot is broken or too old: must be >= version 5.0 “
> 
> I downloaded the new version of gnu plot for mac (which, by the way, according 
> to GRETL creators should already be included in the gretl package) but I am not 
> able to install it.
> I tried to download other versions of both gretl and gnuplot but nothing 
> changes.
> 
> I am really confused, I don’t know what else to try and I really need to get 
> this analysis done.
> 
> Hope you could direct me on the right path.
> Thank you in advance.
> 
> 
> 
> 
> 
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[Gnuplot-info] GnuPlot on Gretl

[valerie v. a. <val...@ya...>]

Hi guys,

I am using GRETL for my econometric analysis, which relies on gnu plot for any kind of graphic visualisation e.g. graphs/distributions etc.
I already worked in the past with gretl+gnuplot and was working perfectly. Suddenly, today when i tried to graph something the software told me:

“ Gnuplot is broken or too old: must be >= version 5.0 “

I downloaded the new version of gnu plot for mac (which, by the way, according to GRETL creators should already be included in the gretl package) but I am not able to install it.
I tried to download other versions of both gretl and gnuplot but nothing changes.

I am really confused, I don’t know what else to try and I really need to get this analysis done.

Hope you could direct me on the right path.
Thank you in advance.