gnuplot-info — For questions and discussion about gnuplot

Re: [Gnuplot-info] sprintf

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

On Friday, 12 October 2018 03:08:49 Patrick Dupre wrote:
> Hello,
> 
> When I use:
> set table "0f_Lor_fitted.asc" ; plot [x_min:x_max] '+' u 1:(ampl*Lor_D(x-x0,W)+offset+y_lin(x-x0,slope)) with table ; unset table
> 
> I get a proper file.
> But, when I do (to get more control on the data format)
> 
> set table "0f_Lor_fitted.asc" ; plot [x_min:x_max] '+' u (sprintf("%g,$1)):(ampl*Lor_D(x-x0,W)+offset+y_lin(x-x0,slope)) with table ; unset table
> 
> I get:
> nan
> instead of the expected value.
> 
> I thought that I did like it is described in the manual.
> What did I miss?

When I try to reproduce this problem I get an error because
there is a missing quote to terminate "%g".   If I add the
quote, then it works with no error.  But I had to invent
functions and constants fro ampl Lor_D W and so on.
Can you either provide the full script or reduce the problem
to a stand-alone command?

	Ethan

Re: [Gnuplot-info] How to plot as function of weekday?

[BBands <bb...@gm...>]

Does this help?

https://stackoverflow.com/questions/17791828/gnuplot-date-time-in-x-axis

    John
On Fri, Oct 12, 2018 at 12:00 PM theozh <th...@gm...> wrote:
>
> Hello,
> is there a way to plot as function of the weekday or as function of weekday+daytime?
>
> I can plot as function of day and as function of daytime, but haven't yet found a way for weekday or weekday+daytime.
> Probably, I have to define a function to convert weekday into a number from 0 to 6 (or 1 to 7) and add the daytime as a fraction? Or maybe I overlooked a simple, obvious way?
> In the below example I get "warning: Bad time format in string". Could this be a conflict with locale/language settings?
>
> Thank you for hints.
> Theo.
>
> The following code should illustrate for testing purpose.
>
> ### plot as a function of weekday
> # generate some random test data
> set print $BirthData
> do for [i=1:100] {
>         RandomDate = rand(0)*1.5e9
>         RandomNumber = rand(0)*100
>         print(strftime("%a %d.%m.%Y %H:%M:%S", RandomDate)." ".sprintf("%g",RandomNumber))
> }
> set print
> print $BirthData
>
> set multiplot layout 3,1
>
> set xdata time
> set format x "%Y"
> plot $BirthData u (timecolumn(2,"%d.%m.%Y")):4
>
> set format x "%H:%M"
> plot $BirthData u (timecolumn(3,"%H:%M")):4
>
> set format x "%a"
> plot $BirthData u (timecolumn(1,"%a")):4    # does not work! "warning: Bad time format in string"
>
> unset multiplot
> ### end of code
>
>
>
>
>
>
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info

Re: [Gnuplot-info] How to plot as function of weekday?

[Alan C. <ala...@gm...>]

I don't begin to understand all that but see %u and %w in the strftime
man page.  You can get an integer 1-7 or 0-6.

On 10/12/18, theozh <th...@gm...> wrote:
> Hello,
> is there a way to plot as function of the weekday or as function of
> weekday+daytime?
>
> I can plot as function of day and as function of daytime, but haven't yet
> found a way for weekday or weekday+daytime.
> Probably, I have to define a function to convert weekday into a number from
> 0 to 6 (or 1 to 7) and add the daytime as a fraction? Or maybe I overlooked
> a simple, obvious way?
> In the below example I get "warning: Bad time format in string". Could this
> be a conflict with locale/language settings?
>
> Thank you for hints.
> Theo.
>
> The following code should illustrate for testing purpose.
>
> ### plot as a function of weekday
> # generate some random test data
> set print $BirthData
> do for [i=1:100] {
> 	RandomDate = rand(0)*1.5e9
> 	RandomNumber = rand(0)*100
> 	print(strftime("%a %d.%m.%Y %H:%M:%S", RandomDate)."
> ".sprintf("%g",RandomNumber))
> }
> set print
> print $BirthData
>
> set multiplot layout 3,1
>
> set xdata time
> set format x "%Y"
> plot $BirthData u (timecolumn(2,"%d.%m.%Y")):4
>
> set format x "%H:%M"
> plot $BirthData u (timecolumn(3,"%H:%M")):4
>
> set format x "%a"
> plot $BirthData u (timecolumn(1,"%a")):4    # does not work! "warning: Bad
> time format in string"
>
> unset multiplot
> ### end of code
>
>
>
>
>
>
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via:
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>


-- 
-------------
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Cities are cages built to contain excess people and keep them from
cluttering up nature.
Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach

[Gnuplot-info] How to plot as function of weekday?

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

Hello,
is there a way to plot as function of the weekday or as function of weekday+daytime?

I can plot as function of day and as function of daytime, but haven't yet found a way for weekday or weekday+daytime.
Probably, I have to define a function to convert weekday into a number from 0 to 6 (or 1 to 7) and add the daytime as a fraction? Or maybe I overlooked a simple, obvious way? 
In the below example I get "warning: Bad time format in string". Could this be a conflict with locale/language settings?

Thank you for hints.
Theo.

The following code should illustrate for testing purpose.

### plot as a function of weekday
# generate some random test data
set print $BirthData
do for [i=1:100] {
	RandomDate = rand(0)*1.5e9
	RandomNumber = rand(0)*100
	print(strftime("%a %d.%m.%Y %H:%M:%S", RandomDate)." ".sprintf("%g",RandomNumber))
}
set print
print $BirthData

set multiplot layout 3,1

set xdata time
set format x "%Y"
plot $BirthData u (timecolumn(2,"%d.%m.%Y")):4

set format x "%H:%M"
plot $BirthData u (timecolumn(3,"%H:%M")):4

set format x "%a"
plot $BirthData u (timecolumn(1,"%a")):4    # does not work! "warning: Bad time format in string"

unset multiplot
### end of code

[Gnuplot-info] sprintf

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

Hello,

When I use:
set table "0f_Lor_fitted.asc" ; plot [x_min:x_max] '+' u 1:(ampl*Lor_D(x-x0,W)+offset+y_lin(x-x0,slope)) with table ; unset table

I get a proper file.
But, when I do (to get more control on the data format)

set table "0f_Lor_fitted.asc" ; plot [x_min:x_max] '+' u (sprintf("%g,$1)):(ampl*Lor_D(x-x0,W)+offset+y_lin(x-x0,slope)) with table ; unset table

I get:
nan
instead of the expected value.

I thought that I did like it is described in the manual.
What did I miss?

Thank

===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================

Re: [Gnuplot-info] keyword using with binary data matrix

[Edmond R. <ero...@gm...>]

Thank you.   dx is not quite what I was looking for.

I wish do do something like:
plot "file" binary array=18000x4500 flipy format='%int16  using
(($1/50.0)-180):(($2/50.0)-90):3 ...........

But I can only do that if I am reading an ascii matrix, but not with a binary.

It is just that making the ascii files takes time and space, but the
real issue is how long gnuplot spends reading and plotting a large
ascii file.  The binary is much faster.

There are options such as x2range and y2range, but I preferred
manipulating the index values
On Thu, Sep 27, 2018 at 7:28 PM Ethan A Merritt <eam...@gm...> wrote:
>
> On Thursday, 27 September 2018 16:56:53 Edmond Rodriguez wrote:
> > So I can read a matrix of binary data and make an image plot like this:
> >
> > plot "file" binary array=18000x4500 flipy format='%int16' with image
> >
> > But I want to manipulate the points with using keyword.
>
> Gnuplot does not support that.
>
>
> > But I cannot.
> >
> > So I have to do this:
> >
> > dump the binary file to ascii:
> > od -v -An -t d2 -w36000 file | tac > file.asc
> >
> > Then I can plot:
> > plot 'file.asc' matrix using 1:2:3 with image palette
> > or change values:
> > plot 'file.asc' matrix using ($1/50):2:3 with image palette
> >
> > How do I accomplish the "using" in the binary method
> >
> > The reason I want to do this is so I can do math  on the numbers.
> >
> >  I want to do something like this but I am not getting it right:
> >
> > plot "file" binary array=18000x4500 flipy format='%int16'  using
> > ($1/50):2:3 with image
>
> I take it that what you want is to shrink the range of x coordinate
> occupied by the image.  There is a keyword for that
>   plot "file" binary array=18000x4500 dx=0.02 dy=1.0 ...
>
> For examples see
>   http://gnuplot.sourceforge.net/demo_5.3/barchart_art.html

[Gnuplot-info] error during fitting

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

Hello,

I get
"fit.gnu", line 97: Function evaluation yields NaN ("not a number")

during a fit. It may by due to a guessed values out of range

setting FIT_LIMIT does not help.

Thank.

===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================

Re: [Gnuplot-info] keyword using with binary data matrix

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

On Thursday, 27 September 2018 16:56:53 Edmond Rodriguez wrote:
> So I can read a matrix of binary data and make an image plot like this:
> 
> plot "file" binary array=18000x4500 flipy format='%int16' with image
> 
> But I want to manipulate the points with using keyword.   

Gnuplot does not support that.


> But I cannot.
> 
> So I have to do this:
> 
> dump the binary file to ascii:
> od -v -An -t d2 -w36000 file | tac > file.asc
> 
> Then I can plot:
> plot 'file.asc' matrix using 1:2:3 with image palette
> or change values:
> plot 'file.asc' matrix using ($1/50):2:3 with image palette
> 
> How do I accomplish the "using" in the binary method
> 
> The reason I want to do this is so I can do math  on the numbers.
> 
>  I want to do something like this but I am not getting it right:
> 
> plot "file" binary array=18000x4500 flipy format='%int16'  using
> ($1/50):2:3 with image

I take it that what you want is to shrink the range of x coordinate
occupied by the image.  There is a keyword for that
  plot "file" binary array=18000x4500 dx=0.02 dy=1.0 ...

For examples see
  http://gnuplot.sourceforge.net/demo_5.3/barchart_art.html

[Gnuplot-info] keyword using with binary data matrix

[Edmond R. <ero...@gm...>]

So I can read a matrix of binary data and make an image plot like this:

plot "file" binary array=18000x4500 flipy format='%int16' with image

But I want to manipulate the points with using keyword.   But I cannot.

So I have to do this:

dump the binary file to ascii:
od -v -An -t d2 -w36000 file | tac > file.asc

Then I can plot:
plot 'file.asc' matrix using 1:2:3 with image palette
or change values:
plot 'file.asc' matrix using ($1/50):2:3 with image palette

How do I accomplish the "using" in the binary method

The reason I want to do this is so I can do math  on the numbers.

 I want to do something like this but I am not getting it right:

plot "file" binary array=18000x4500 flipy format='%int16'  using
($1/50):2:3 with image

Thanks for any clues

Re: [Gnuplot-info] xyzerrorlars

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

a (strange) workaround might be the following...

Assuming your original data has the following structure:
x   y   z  dx  dy  dz 
you can create a dataset which contains the x,y,z errorbars as data each separated by at least 2 empty lines.
When you plot this dataset, lines will not be connected and will look like x,y,z errorbars.
Maybe this is somehow helpful.
Theo.


####### 3D plot with "x,y,z errorbars"

$Data <<EOD
# x   y   z  dx  dy  dz 
0.0 0.0 0.0 0.1 0.1 0.1
1.0 0.5 1.0 0.2 0.2 0.2
2.0 2.0 1.5 0.5 0.5 0.5
4.0 3.0 1.0 1.0 0.6 0.4
EOD

stats $Data
set print $ErrXYZ
do for [i=0:STATS_records-1] {
   set table $Dummy
   plot $Data u ($1-$4):2:3 every ::i::i with table
   plot $Data u ($1+$4):2:3 every ::i::i with table
   print $Dummy
   print "\n"
   set table $Dummy
   plot $Data u 1:($2-$5):3 every ::i::i with table
   plot $Data u 1:($2+$5):3 every ::i::i with table
   print $Dummy
   print "\n"  
   set table $Dummy
   plot $Data u 1:2:($3-$6) every ::i::i with table
   plot $Data u 1:2:($3+$6) every ::i::i with table
   print $Dummy
   print "\n"   
}
unset table 
set print
# print $ErrXYZ  #uncomment this line if you want to print the dataset

splot $Data u 1:2:3 w lp, $ErrXYZ w lp ls 7 ps 0.5 lc rgb "red"

# end of code

[Gnuplot-info] xyzerrorlars

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

Hello,

I would like to plot a 3D picture by using splot and
x, y, and z error bars.

I did not see this option.
Is it possible ?

Thank

===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================

[Gnuplot-info] chi2

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

Hello,

When I fit data with the weighting option (xyerror),
I get 
final sum of squares of residuals : 22.7527
rms of residuals      (FIT_STDFIT) = sqrt(WSSR/ndf)    : 1.12429
variance of residuals (reduced chisquare) = WSSR/ndf   : 1.26404

But I never get the 
unweighted sum of squares of residuals (Chi2)
ie.
\sum (f(x_i)-y_i)^2

How, can I make this calculation which is provided with a non weighting
option?

Thank.

===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================

Re: [Gnuplot-info] change of line colours when upgrading gnuplot

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

Many possible options. The first three that come to mind are

(1) You can now set line colors to anything you like.
I don't remember what they were for the eps terminal in version 4.0 but for
the purpose of illustrating, let's say it was red, blue, green, magenta.
You can redefine the first four line colors to this sequence by saying

set linetype 1 linecolor "red"
set linetype 2 linecolor "blue"
set linetype 3 linecolor "green"
set linetype 4 linecolor "magenta"

This will affect all terminals, not just the eps terminal

(2) That red/blue/green/magenta sequence is the "classic" one, so you
should get the same result by saying
    set colors classic
in gnuplot version 5

(3) The definitions you show above are read from the file prologue.ps
You could edit this file in place (will affect all future use of the
gnuplot postscript terminals) or you could make a copy in a new directory
and edit the copy. You can then use the gnuplot command
    set psdir <new-directory-name>
so the the postscript terminals will use the edited copy rather than the
system-wide copy.  This will affect only the current gnuplot session, or
until you say "unset psdir".

On Wed, Aug 22, 2018 at 11:44 AM, Jelle de Jong <jel...@po...>
wrote:

> I came a bit further by looking at the generated eps files.
>
> I found the bellow default colors (this whole block is not present with
> the old generated eps with gnuplot 4.0 patchlevel 0) and if I change the
> values in the eps file the lines color will change. So I am looking for
> the behaviour of gnuplot 4.0 patchlevel 0 (this was the old working
> version).
>
> Is there a way to not have the default line colors present, or otherwise
> what is the way to set the default line colors to other values, because
> altering them may be a workaround.
>
> gnuplot 4.6 patchlevel 2
>
> % Default Line colors
> /LCw {1 1 1} def
> /LCb {0 0 0} def
> /LCa {0 0 0} def
> /LC0 {1 0 0} def
> /LC1 {0 1 0} def
> /LC2 {0 0 1} def
> /LC3 {1 0 1} def
> /LC4 {0 1 1} def
> /LC5 {1 1 0} def
> /LC6 {0 0 0} def
> /LC7 {1 0.3 0} def
> /LC8 {0.5 0.5 0.5} def
>
> gnuplot 5.2 patchlevel 4
>
> % Classic Line colors (version 5.0)
> /LCw {1 1 1} def
> /LCb {0 0 0} def
> /LCa {0 0 0} def
> /LC0 {1 0 0} def
> /LC1 {0 1 0} def
> /LC2 {0 0 1} def
> /LC3 {1 0 1} def
> /LC4 {0 1 1} def
> /LC5 {1 1 0} def
> /LC6 {0 0 0} def
> /LC7 {1 0.3 0} def
> /LC8 {0.5 0.5 0.5} def
>
> Kind regards,
>
> Jelle de Jong
>
>
>
> On 15/08/18 18:34, Jelle de Jong wrote:
> > On 15/08/18 17:19, Kevin Oberman wrote:
> >> On Wed, Aug 15, 2018 at 7:51 AM Jelle de Jong <
> jel...@po...
> >> <mailto:jel...@po...>> wrote:
> >>
> >>     Hello everybody,
> >>
> >>     upgrade from gnuplot 4.0 patchlevel 0 to -> gnuplot 4.6 patchlevel 2
> >>
> >>     I attached two picture of graphs that generated different line
> colours.
> >>
> >>     I can not find any colour definitions in the gnuplot input files.
> >>
> >>     I am trying to figure out what to look for in the gnuplot input
> files so
> >>     I can change the colours back. Can somebody help?
> >>
> >>     For what I can see there are lt (linetype) 1 to 5 used.
> >>
> >>     Can I output the linetype colour mapping/pallet somehow?
> >>
> >> This change was documented in the v5 release notes.
> >>
> >> If you want the old colors back, you may explicitly specify them or use
> >> the command "set colors classic".
> >
> > Thank you for taking the time to reply, very much appreciated!
> >
> > I am running gnuplot 4.6 patchlevel 2
> >
> > There does not seem to be a set colors classic command, is there
> > something else I can do to get the classic colors back?
> >
> > Kind regards,
> >
> > Jelle de Jong
> >
> > ------------------------------------------------------------
> ------------------
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > _______________________________________________
> > gnuplot-info mailing list
> > gnu...@li...
> > Membership management via: https://lists.sourceforge.net/
> lists/listinfo/gnuplot-info
> >
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/
> lists/listinfo/gnuplot-info
>

Re: [Gnuplot-info] change of line colours when upgrading gnuplot

[Jelle de J. <jel...@po...>]

I came a bit further by looking at the generated eps files.

I found the bellow default colors (this whole block is not present with
the old generated eps with gnuplot 4.0 patchlevel 0) and if I change the
values in the eps file the lines color will change. So I am looking for
the behaviour of gnuplot 4.0 patchlevel 0 (this was the old working
version).

Is there a way to not have the default line colors present, or otherwise
what is the way to set the default line colors to other values, because
altering them may be a workaround.

gnuplot 4.6 patchlevel 2

% Default Line colors
/LCw {1 1 1} def
/LCb {0 0 0} def
/LCa {0 0 0} def
/LC0 {1 0 0} def
/LC1 {0 1 0} def
/LC2 {0 0 1} def
/LC3 {1 0 1} def
/LC4 {0 1 1} def
/LC5 {1 1 0} def
/LC6 {0 0 0} def
/LC7 {1 0.3 0} def
/LC8 {0.5 0.5 0.5} def

gnuplot 5.2 patchlevel 4

% Classic Line colors (version 5.0)
/LCw {1 1 1} def
/LCb {0 0 0} def
/LCa {0 0 0} def
/LC0 {1 0 0} def
/LC1 {0 1 0} def
/LC2 {0 0 1} def
/LC3 {1 0 1} def
/LC4 {0 1 1} def
/LC5 {1 1 0} def
/LC6 {0 0 0} def
/LC7 {1 0.3 0} def
/LC8 {0.5 0.5 0.5} def

Kind regards,

Jelle de Jong



On 15/08/18 18:34, Jelle de Jong wrote:
> On 15/08/18 17:19, Kevin Oberman wrote:
>> On Wed, Aug 15, 2018 at 7:51 AM Jelle de Jong <jel...@po...
>> <mailto:jel...@po...>> wrote:
>>
>>     Hello everybody,
>>
>>     upgrade from gnuplot 4.0 patchlevel 0 to -> gnuplot 4.6 patchlevel 2
>>
>>     I attached two picture of graphs that generated different line colours.
>>
>>     I can not find any colour definitions in the gnuplot input files.
>>
>>     I am trying to figure out what to look for in the gnuplot input files so
>>     I can change the colours back. Can somebody help?
>>
>>     For what I can see there are lt (linetype) 1 to 5 used.
>>
>>     Can I output the linetype colour mapping/pallet somehow?
>>
>> This change was documented in the v5 release notes.
>>
>> If you want the old colors back, you may explicitly specify them or use
>> the command "set colors classic".
> 
> Thank you for taking the time to reply, very much appreciated!
> 
> I am running gnuplot 4.6 patchlevel 2
> 
> There does not seem to be a set colors classic command, is there
> something else I can do to get the classic colors back?
> 
> Kind regards,
> 
> Jelle de Jong
> 
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> Membership management via: https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 

Re: [Gnuplot-info] plot with table

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

On Wednesday, 22 August 2018 09:49:01 Patrick Dupre wrote:
> Sorry, for the replot, I do not need the replot.
> 
> I want to do for example:
> 
> set table "out.asc"
> plot  [44500:45600] (ampl*d_Lor_D (x-x0, W)+offset)
> without getting the third column with "i"

plot '+' using 1:(ampl*d_Lor_D (x-x0, W)+offset) with table



> 
> or
> plot $DATA u (x=$1):(ampl*d_Lor_D (x-x0, W)+offset)
> for x taken from x_min to x_max with "samples" values
> 
> in other words.
> I want in a file what I can plot with
> replot ampl*d_Lor_D (x-x0, W)+offset
  ^^^^^^^
I still do not understand why you are using replot.

	Ethan



> after a fit.
> 
> Thank.
> 
> ===========================================================================
>  Patrick DUPRÉ                                 | | email: pd...@gm...
>  Laboratoire de Physico-Chimie de l'Atmosphère | |
>  Université du Littoral-Côte d'Opale           | |
>  Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
>  189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
> ===========================================================================

Re: [Gnuplot-info] plot with table

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

Sorry, for the replot, I do not need the replot.

I want to do for example:

set table "out.asc"
plot  [44500:45600] (ampl*d_Lor_D (x-x0, W)+offset)
without getting the third column with "i"

or
plot $DATA u (x=$1):(ampl*d_Lor_D (x-x0, W)+offset)
for x taken from x_min to x_max with "samples" values

in other words.
I want in a file what I can plot with
replot ampl*d_Lor_D (x-x0, W)+offset
after a fit.

Thank.

===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================


> Sent: Wednesday, August 22, 2018 at 5:56 AM
> From: "Ethan A Merritt" <EAM...@gm...>
> To: "Patrick Dupre" <pd...@gm...>
> Cc: gnuplot <gnu...@li...>
> Subject: Re: [Gnuplot-info] plot with table
>
> On Wednesday, 22 August 2018 00:56:20 Patrick Dupre wrote:
> > 
> > ===========================================================================
> > Patrick DUPRÉ | | email: pd...@gm...
> > Laboratoire de Physico-Chimie de l'Atmosphère | |
> > Université du Littoral-Côte d'Opale | |
> > Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44
> > 189A, avenue Maurice Schumann | | 59140 Dunkerque, France
> > ===========================================================================
> >  
> >  
> > Sent: Wednesday, August 22, 2018 at 12:46 AM
> > From: "Ethan Merritt" <eam...@gm...>
> > To: "Patrick Dupre" <pd...@gm...>
> > Cc: gnuplot <gnu...@li...>
> > Subject: Re: [Gnuplot-info] plot with table
> > On Tue, Aug 21, 2018 at 3:33 PM, Patrick Dupre <pd...@gm...> wrote:
> > Hello,
> > 
> > Something is escaping to me.
> > I tried:
> > 
> > set table "out.asc"
> > plot $DATA u (x=$1):(ampl*d_Lor_D (x-x0, W)+offset) with table
> > unset table
> > 
> > 
> > But the number of samples is ignored
> >  
> > That is because there is no sampling. You have asked it to print
> > one line of output for each line in $DATA. The first value on that line is
> > echoed from $DATA, the second value is a function of the first.
> >  
> > while
> > plot $DATA u 1:2
> > replot ampl*d_Lor_D (x-x0, W)+offset
> > has the right number of sample
> >  
> > Here you generate two plots.
> > The first one has one line for each line in $DATA.
> > The second one samples a function, where the number of samples
> > is controlled by "set sample".
> > There is no intrinsic relationship between the x values in the first plot
> > and those in the second.
> >  
> > How can I fix the issue
> >  
> >  
> > It is not clear what you are aiming for.
> > Are you trying to fit and re-sample the values held in $DATA?
> > That would require a rather different set of commands, either
> > based on "fit" or "smooth".
> >  
> >   Ethan
> >  
> >  
> > Actually, I fit $DATA, and I plot the fit with replot ampl*d_Lor_D (x-x0, W)+offset
> > while I would like also to get the same data in a file
> 
> Sorry, I still do not understand what you are trying to do.
> Why are you using "replot" rather than "plot"?
> What content, exactly, do you want to have in the output file?
> 
> 	Ethan
> 
> 
> 
> 
>

Re: [Gnuplot-info] plot with table

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

On Wednesday, 22 August 2018 00:56:20 Patrick Dupre wrote:
> 
> ===========================================================================
> Patrick DUPRÉ | | email: pd...@gm...
> Laboratoire de Physico-Chimie de l'Atmosphère | |
> Université du Littoral-Côte d'Opale | |
> Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44
> 189A, avenue Maurice Schumann | | 59140 Dunkerque, France
> ===========================================================================
>  
>  
> Sent: Wednesday, August 22, 2018 at 12:46 AM
> From: "Ethan Merritt" <eam...@gm...>
> To: "Patrick Dupre" <pd...@gm...>
> Cc: gnuplot <gnu...@li...>
> Subject: Re: [Gnuplot-info] plot with table
> On Tue, Aug 21, 2018 at 3:33 PM, Patrick Dupre <pd...@gm...> wrote:
> Hello,
> 
> Something is escaping to me.
> I tried:
> 
> set table "out.asc"
> plot $DATA u (x=$1):(ampl*d_Lor_D (x-x0, W)+offset) with table
> unset table
> 
> 
> But the number of samples is ignored
>  
> That is because there is no sampling. You have asked it to print
> one line of output for each line in $DATA. The first value on that line is
> echoed from $DATA, the second value is a function of the first.
>  
> while
> plot $DATA u 1:2
> replot ampl*d_Lor_D (x-x0, W)+offset
> has the right number of sample
>  
> Here you generate two plots.
> The first one has one line for each line in $DATA.
> The second one samples a function, where the number of samples
> is controlled by "set sample".
> There is no intrinsic relationship between the x values in the first plot
> and those in the second.
>  
> How can I fix the issue
>  
>  
> It is not clear what you are aiming for.
> Are you trying to fit and re-sample the values held in $DATA?
> That would require a rather different set of commands, either
> based on "fit" or "smooth".
>  
>   Ethan
>  
>  
> Actually, I fit $DATA, and I plot the fit with replot ampl*d_Lor_D (x-x0, W)+offset
> while I would like also to get the same data in a file

Sorry, I still do not understand what you are trying to do.
Why are you using "replot" rather than "plot"?
What content, exactly, do you want to have in the output file?

	Ethan

Re: [Gnuplot-info] plot with table

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

On Tue, Aug 21, 2018 at 3:33 PM, Patrick Dupre <pd...@gm...> wrote:

> Hello,
>
> Something is escaping to me.
> I tried:
>
> set table "out.asc"
> plot $DATA u (x=$1):(ampl*d_Lor_D (x-x0, W)+offset) with table
> unset table
>
>
> But the number of samples is ignored


That is because there is no sampling.  You have asked it to print
one line of output for each line in $DATA.   The first value on that line is
echoed from $DATA, the second value is a function of the first.

while
> plot $DATA u 1:2
> replot ampl*d_Lor_D (x-x0, W)+offset
> has the right number of sample
>

Here you generate two plots.
The first one has one line for each line in $DATA.
The second one samples a function, where the number of samples
is controlled by "set sample".
There is no intrinsic relationship between the x values in the first plot
and those in the second.

How can I fix the issue
>


It is not clear what you are aiming for.
Are you trying to fit and re-sample the values held in $DATA?
That would require a rather different set of commands, either
based on "fit" or "smooth".

    Ethan






> Thank
>
> ============================================================
> ===============
>  Patrick DUPRÉ                                 | | email: pd...@gm...
>  Laboratoire de Physico-Chimie de l'Atmosphère | |
>  Université du Littoral-Côte d'Opale           | |
>  Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
>  189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
> ============================================================
> ===============
>

[Gnuplot-info] plot with table

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

Hello,

Something is escaping to me.
I tried:

set table "out.asc"                                           
plot $DATA u (x=$1):(ampl*d_Lor_D (x-x0, W)+offset) with table  
unset table


But the number of samples is ignored while
plot $DATA u 1:2
replot ampl*d_Lor_D (x-x0, W)+offset
has the right number of sample

How can I fix the issue ?

Thank

===========================================================================
 Patrick DUPRÉ                                 | | email: pd...@gm...
 Laboratoire de Physico-Chimie de l'Atmosphère | |
 Université du Littoral-Côte d'Opale           | |
 Tel.  (33)-(0)3 28 23 76 12                   | | Fax: 03 28 65 82 44
 189A, avenue Maurice Schumann                 | | 59140 Dunkerque, France
===========================================================================

Re: [Gnuplot-info] How to set ppi/dpi from wxt output?

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

Since my program which generates the gnuplot code is written in Python, I finally can also use Python to get a screenshot of the gnuplot wxt terminal. It assumes that the window frame around the plot stays always the same, in my case (l,t,r,b)margins = (8,63,8,31) pixels. Unfortunately, one flaw is that I had to insert a waiting time because the gnuplot window is not coming to front immediately. Maybe somebody has a solution for this? See: https://stackoverflow.com/questions/51879113
With this as a base, I can implement something where I can give a dimension in mm or cm and get the screenshot on the clipboard scaled accordingly when copied into the final application (Word, PPT, LibreOffice, etc.). Maybe this is also useful to somebody else...

Re: [Gnuplot-info] change of line colours when upgrading gnuplot

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

On Wednesday, 15 August 2018 18:34:36 Jelle de Jong wrote:
> On 15/08/18 17:19, Kevin Oberman wrote:
> > On Wed, Aug 15, 2018 at 7:51 AM Jelle de Jong <jel...@po...
> > <mailto:jel...@po...>> wrote:
> > 
> >     Hello everybody,
> > 
> >     upgrade from gnuplot 4.0 patchlevel 0 to -> gnuplot 4.6 patchlevel 2
> > 
> >     I attached two picture of graphs that generated different line colours.
> > 
> >     I can not find any colour definitions in the gnuplot input files.
> > 
> >     I am trying to figure out what to look for in the gnuplot input files so
> >     I can change the colours back. Can somebody help?
> > 
> >     For what I can see there are lt (linetype) 1 to 5 used.
> > 
> >     Can I output the linetype colour mapping/pallet somehow?
> >
> > This change was documented in the v5 release notes.
> > 
> > If you want the old colors back, you may explicitly specify them or use
> > the command "set colors classic".
> 
> Thank you for taking the time to reply, very much appreciated!
> 
> I am running gnuplot 4.6 patchlevel 2
> 
> There does not seem to be a set colors classic command, is there
> something else I can do to get the classic colors back?

Your attachments to the original query did not make it through to 
anywhere I could see them, so I do not know what colors you are talking about.
The new color scheme was not made a default until version 5, so whatever
you are seeing in version 4.6 must be something else.

Version 4.6 does however support the mechanism for setting linecolors
that was eventually used in version 5 to change the default.
It is possible that your initialization file is using this mechanism
to change colors on entry.  If that is what is happening you can either
edit the initialization file or bypass it using the "-d" flag.
     gnuplot -d

Otherwise, more information needed.
Is this affecting all terminal types or only a particular terminal?
Is there some reason you would upgrade from version 4.0 only as far
as 4.6 rather than 5.2 (current)?

	Ethan

> 
> Kind regards,
> 
> Jelle de Jong
-- 

Re: [Gnuplot-info] change of line colours when upgrading gnuplot

[Jelle de J. <jel...@po...>]

On 15/08/18 17:19, Kevin Oberman wrote:
> On Wed, Aug 15, 2018 at 7:51 AM Jelle de Jong <jel...@po...
> <mailto:jel...@po...>> wrote:
> 
>     Hello everybody,
> 
>     upgrade from gnuplot 4.0 patchlevel 0 to -> gnuplot 4.6 patchlevel 2
> 
>     I attached two picture of graphs that generated different line colours.
> 
>     I can not find any colour definitions in the gnuplot input files.
> 
>     I am trying to figure out what to look for in the gnuplot input files so
>     I can change the colours back. Can somebody help?
> 
>     For what I can see there are lt (linetype) 1 to 5 used.
> 
>     Can I output the linetype colour mapping/pallet somehow?
>
> This change was documented in the v5 release notes.
> 
> If you want the old colors back, you may explicitly specify them or use
> the command "set colors classic".

Thank you for taking the time to reply, very much appreciated!

I am running gnuplot 4.6 patchlevel 2

There does not seem to be a set colors classic command, is there
something else I can do to get the classic colors back?

Kind regards,

Jelle de Jong

Re: [Gnuplot-info] change of line colours when upgrading gnuplot

[Kevin O. <rko...@gm...>]

On Wed, Aug 15, 2018 at 7:51 AM Jelle de Jong <jel...@po...>
wrote:

> Hello everybody,
>
> upgrade from gnuplot 4.0 patchlevel 0 to -> gnuplot 4.6 patchlevel 2
>
> I attached two picture of graphs that generated different line colours.
>
> I can not find any colour definitions in the gnuplot input files.
>
> I am trying to figure out what to look for in the gnuplot input files so
> I can change the colours back. Can somebody help?
>
> For what I can see there are lt (linetype) 1 to 5 used.
>
> Can I output the linetype colour mapping/pallet somehow?
>
> Kind regards,
>
> Jelle de Jo
> ng
>

This change was documented in the v5 release notes.

If you want the old colors back, you may explicitly specify them or use the
command "set colors classic".
--
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rko...@gm...
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683

[Gnuplot-info] change of line colours when upgrading gnuplot

[Jelle de J. <jel...@po...>]

Hello everybody,

upgrade from gnuplot 4.0 patchlevel 0 to -> gnuplot 4.6 patchlevel 2

I attached two picture of graphs that generated different line colours.

I can not find any colour definitions in the gnuplot input files.

I am trying to figure out what to look for in the gnuplot input files so
I can change the colours back. Can somebody help?

For what I can see there are lt (linetype) 1 to 5 used.

Can I output the linetype colour mapping/pallet somehow?

Kind regards,

Jelle de Jong

Re: [Gnuplot-info] How to set ppi/dpi from wxt output?

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

Thank you for the link, I also came across this page. Well, this is for MSOffice 2016.
In MSOffice <=2013 I haven't found such a setting. In MSOffice2013 there is a similar DPI setting but for *exporting* pictures not for *importing* pictures. Too bad...