gnuplot-info — For questions and discussion about gnuplot

Re: [Gnuplot-info] Extract filename

[thse <t.s...@fz...>]

> If anybody knows a more elegant or smarter solution, please let me know.

Call the function recursively:

TestFile = 'C:\sub1\sub2\sub3\sub4\Data007.dat'
chop(fn) = strstrt(fn,'\')?chop(fn[strstrt(fn,'\')+1:*]):fn
print chop(TestFile)




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Re: [Gnuplot-info] Extract filename

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

Thanks, John & Ethan for your immediate response.

> There are some example of gnuplot's strong variable capabilities here that
> should solve your needs.
> http://gnuplot.sourceforge.net/demo/stringvar.html
>

@John, thanks for the link, but strong string variable capabilities? Are
you serious?
It would be nice to find the last key (e.g. '\') in a word. Or at least
a function to reverse a string. Best would be of course regular
expressions ;-).


> Assuming that the subdirectories are not themselves named Datasomething,
Well, I cannot be sure that this will always be the case.

> I'd use something like
> 
>     chop(fullname) = fullname[ strstrt(fullname,"Data") : * ]
> 
>     plot for [FileName in FileList] FileName u 1:2 w l title chop(FileName)
> 
@Ethan, yes, this works with the above mentioned limitations.

Based on your suggestion, the following is a cumbersome workaround for a
function to extract the file name (at least to 6 levels of
subdirectories, but can be extended).


TestFile = 'C:\sub1\sub2\sub3\sub4\Data007.dat'

chop1(FullName) = FullName[strstrt(FullName,'\')+1:*]
chop2(FullName) = chop1(FullName)[strstrt(chop1(FullName),'\')+1:*]
chop3(FullName) = chop2(FullName)[strstrt(chop2(FullName),'\')+1:*]
chop4(FullName) = chop3(FullName)[strstrt(chop3(FullName),'\')+1:*]
chop5(FullName) = chop4(FullName)[strstrt(chop4(FullName),'\')+1:*]
chop6(FullName) = chop5(FullName)[strstrt(chop5(FullName),'\')+1:*]
chop(FullName) = chop6(FullName)[strstrt(chop6(FullName),'\')+1:*]

FileName = chop(TestFile)
print FileName

If anybody knows a more elegant or smarter solution, please let me know.

Re: [Gnuplot-info] Extract filename

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

Assuming that the subdirectories are not themselves named Datasomething,
I'd use something like

    chop(fullname) = fullname[ strstrt(fullname,"Data") : * ]

    plot for [FileName in FileList] FileName u 1:2 w l title chop(FileName)


On Wed, May 24, 2017 at 12:36 PM, theozh <th...@gm...> wrote:

> With the following commands (under Windows) I would like to plot several
> datafiles located in several subdirectories, which obey a certain name
> scheme.
>
> FileList = system("dir /B /S Data*.dat")
> plot for [FileName in FileList] FileName u 1:2 w l title FileName
>
> However, with this, FileName always contains the full path,
> e.g. C:\SubDir1\SubSubDir2\Test3\Blabla4\Data007.dat
> which is not very helpful in the legend.
>
> Any ideas how I can separate the path from the filename in gnuplot,
> or even just extract what "*" was, e.g. the number "007"?
> substr() will not work because subpaths can have different length.
> Is there anything like regular expressions in gnuplot?
> Thank you for any hints.
>
>
> ------------------------------------------------------------
> ------------------
> 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] Extract filename

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

There are some example of gnuplot's strong variable capabilities here that
should solve your needs.

http://gnuplot.sourceforge.net/demo/stringvar.html

      John

On Wed, May 24, 2017 at 12:36 PM, theozh <th...@gm...> wrote:

> With the following commands (under Windows) I would like to plot several
> datafiles located in several subdirectories, which obey a certain name
> scheme.
>
> FileList = system("dir /B /S Data*.dat")
> plot for [FileName in FileList] FileName u 1:2 w l title FileName
>
> However, with this, FileName always contains the full path,
> e.g. C:\SubDir1\SubSubDir2\Test3\Blabla4\Data007.dat
> which is not very helpful in the legend.
>
> Any ideas how I can separate the path from the filename in gnuplot,
> or even just extract what "*" was, e.g. the number "007"?
> substr() will not work because subpaths can have different length.
> Is there anything like regular expressions in gnuplot?
> Thank you for any hints.
>
>
> ------------------------------------------------------------
> ------------------
> 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
>

[Gnuplot-info] Extract filename

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

With the following commands (under Windows) I would like to plot several
datafiles located in several subdirectories, which obey a certain name
scheme.

FileList = system("dir /B /S Data*.dat")
plot for [FileName in FileList] FileName u 1:2 w l title FileName

However, with this, FileName always contains the full path,
e.g. C:\SubDir1\SubSubDir2\Test3\Blabla4\Data007.dat
which is not very helpful in the legend.

Any ideas how I can separate the path from the filename in gnuplot,
or even just extract what "*" was, e.g. the number "007"?
substr() will not work because subpaths can have different length.
Is there anything like regular expressions in gnuplot?
Thank you for any hints.

Re: [Gnuplot-info] Keep in memory

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

set table $TABLE1
plot "< paste " . ARG1 . "| awk '!/^\#/ { print $1, $2 }' " using ($1-x0):2
  with table
unset table

plot $TABLE1

On Mon, May 15, 2017 at 3:02 AM, Patrick Dupre <pd...@gm...> wrote:

> Hello,
>
> I can plot a file, like
> plot "< paste " . ARG1 . "| awk '!/^\#/ { print $1, $2 }' " using ($1-x0):2
>
> How can I get the data in a variable ?
>
> Then I could fit the data without reading the data again for example.
>
> 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
> ============================================================
> ===============
>
> ------------------------------------------------------------
> ------------------
> 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
>

[Gnuplot-info] Keep in memory

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

Hello,

I can plot a file, like
plot "< paste " . ARG1 . "| awk '!/^\#/ { print $1, $2 }' " using ($1-x0):2

How can I get the data in a variable ?

Then I could fit the data without reading the data again for example.

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 the data range for palette to match in gnuplot

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

Thanks! this works.

Sincerely,
Jon

On Tue, May 2, 2017 at 12:52 PM, Ethan Merritt <eam...@gm...> wrote:

> Probably:     set cbrange [min:max]
>
> On Tue, May 2, 2017 at 9:13 AM, Jon <dev...@gm...> wrote:
>
>> Dear Users,
>>
>> I would like to compare across different settings of the same type of data
>> in a color plot using something like the following,
>>
>> plot 'pdratio' using 1:2:(abs($1)>0.3?$4:1/0) with p ps 0.75 pt 4 palette
>>
>> Gnuplot automatically chooses the data range for the palette to map out
>> color, which can be different from case to case. Is there way to ask
>> gnuplot to map out color for the same data range consistently across
>> different cases?
>>
>> Something like
>>
>> set palette maxcolor 100
>>
>> is not what I want.
>>
>> Thanks,
>>
>> Sincerely,
>> Jon
>> ------------------------------------------------------------
>> ------------------
>> 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] how to set the data range for palette to match in gnuplot

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

Probably:     set cbrange [min:max]

On Tue, May 2, 2017 at 9:13 AM, Jon <dev...@gm...> wrote:

> Dear Users,
>
> I would like to compare across different settings of the same type of data
> in a color plot using something like the following,
>
> plot 'pdratio' using 1:2:(abs($1)>0.3?$4:1/0) with p ps 0.75 pt 4 palette
>
> Gnuplot automatically chooses the data range for the palette to map out
> color, which can be different from case to case. Is there way to ask
> gnuplot to map out color for the same data range consistently across
> different cases?
>
> Something like
>
> set palette maxcolor 100
>
> is not what I want.
>
> Thanks,
>
> Sincerely,
> Jon
> ------------------------------------------------------------
> ------------------
> 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
>

[Gnuplot-info] how to set the data range for palette to match in gnuplot

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

Dear Users,

I would like to compare across different settings of the same type of data
in a color plot using something like the following,

plot 'pdratio' using 1:2:(abs($1)>0.3?$4:1/0) with p ps 0.75 pt 4 palette

Gnuplot automatically chooses the data range for the palette to map out
color, which can be different from case to case. Is there way to ask
gnuplot to map out color for the same data range consistently across
different cases?

Something like

set palette maxcolor 100

is not what I want.

Thanks,

Sincerely,
Jon

[Gnuplot-info] plot for introduces extra point at beginning

[Suresh G. <sgo...@ya...>]

Hello,

Below is gnuplot script to draw four plots -- one uses "plot for" and 
the other uses a multi-line plot command.  Although the data has 128 
points per plot, the "plot for" result begins with an extra point and 
draws 129 points.  The multi-line plot draws the expected 128 points.

Question:  how to make the "plot for" display the same as the multi-line 
plot?

     reset
     flnm = "qm5000m_aos_soa.csv"
     myscale = 0.625 # 100/160
     set yrange [0:100]
     set grid
     set datafile separator comma
     set term wxt 0 size 1840,940 enhanced persist
     set title "plot for"
     plot for [ dat in "memcpy gpu1 gpu2 gpu4" ] \
         colnm = sprintf("%s %s", ct, dat) \
         flnm  using (myscale * column(colnm)) with linespoints
     pause -1 "Hit return to continue"

     reset
     set yrange [0:100]
     set term wxt 1 size 1840,940 enhanced persist
     set grid
     set datafile separator comma
     set title "plot multi-line"
     plot flnm  \
           using (myscale * column("32K memcpy")) with linespoints, '' \
           using (myscale * column("32K gpu1"))   with linespoints, '' \
           using (myscale * column("32K gpu2"))   with linespoints, '' \
           using (myscale * column("32K gpu4"))   with linespoints
     pause -1 "Hit return to continue"

     quit

Thanks,

--Suresh

[Gnuplot-info] gnuplot -c

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

Hello,

I used to use 
gnuplot with the option -c to load the scriptname and arguments.
I can stop the run by using a pause -1 in the script.
However, I would like to take the control on the script, for example
after a pause -1 and avoid the end of the script, i.e. leaving gnuplot.
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
===========================================================================

Re: [Gnuplot-info] variable to awk

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

----- Original Message -----

> From: Tatsuro MATSUOKA 
> To: Patrick Dupre 
> Cc: 
> Date: 2017/4/9, Sun 13:46
> Subject: Re: [Gnuplot-info] variable to awk
> 
> 
> 
> 
> 
> ----- Original Message -----
>>  From: Patrick Dupre 
>>  To: gnuplot 
>>  Cc: 
>>  Date: 2017/4/9, Sun 06:09
>>  Subject: [Gnuplot-info] variable to awk
>> 
>>  Hello,
>> 
>>  I would like to do the following:
>>  plot "< awk -v a=var '!/^\#/ {x=x+1; print  x*a,$2 }' 
> file
>> 
>>  where var is a variable defined in gnuplot
>>  Is it possible?
>> 
>>  Thank.
>> 
> 
> The below thread may be helpful for you.
> 
> Tatsuro
> 
Sorry I had made a mistake.

The below thread may be helpful for you.
You can concatenate strings using '.'

http://stackoverflow.com/questions/36138334/concatenate-2-strings-in-gnuplot

Tatsuro

Re: [Gnuplot-info] variable to awk

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

----- Original Message -----
> From: Patrick Dupre 
> To: gnuplot 
> Cc: 
> Date: 2017/4/9, Sun 06:09
> Subject: [Gnuplot-info] variable to awk
> 
> Hello,
> 
> I would like to do the following:
> plot "< awk -v a=var '!/^\#/ {x=x+1; print  x*a,$2 }' file
> 
> where var is a variable defined in gnuplot
> Is it possible?
> 
> Thank.
> 

The below thread may be helpful for you.

Tatsuro

[Gnuplot-info] variable to awk

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

Hello,

I would like to do the following:
plot "< awk -v a=var '!/^\#/ {x=x+1; print  x*a,$2 }' file

where var is a variable defined in gnuplot
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] which

[Thomas D. D. <to...@wa...>]

which

[Gnuplot-info] Band structure plot, how to label vertical lines

[\Niedermayr, Arthur\ <a.n...@pr...>]

Hello everybody,

I want to make some band structure plots with gnuplot.

Vertical lines are not the problem, I can use this command to set a vert. line at the position = 3:
set arrow from 3, graph 0 to 3, graph 1 nohead

But I don't get how to label them (as I showed in the attached file in red).
If i try to set a label, I only succeed in setting the labels above the x axis, but not under the x axis as showed in the file.

What I need are a few labels under the x axis (like an offset) that also support greek characters.

Has anyone experience in it?
Can somebody help me?

Thank you in advance!

All the best,
Arthur Niedemayr

Re: [Gnuplot-info] Gnuplot's internal sequence

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

OK, yes, help autoscale finds that.  I was trying to access the value
in GPVAL_Y_MIN and GPVAL_Y_MAX to convert them for labeling the 2nd Y
scale but couldn't, apparently they get defined by the plotting
process.  I didn't try labeling after plotting.  I was setting my
y2range based on values from stat but then I noticed they were a
little off.  About as I put a bad plot online as the first plot in
that post.  I knew the max temp was about 93 F but it looks more like
83.  The only real change I made was in forcing yrange for the left
axis.

On 3/14/17, Ethan Merritt <eam...@gm...> wrote:
> On Tue, Mar 14, 2017 at 12:56 PM, Alan Corey <ala...@gm...> wrote:
>
>> My final outcome of that last summer:
>> https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=
>> 175024&p=1130714#p1130714
>>
>> Oh, noextend must need version 5, I'm using the 4.6 that's in Raspbian
>> debs, good enough for now.
>>
>>
> In version 4.6 the equivalent command is
>     set autoscale fix
>
> (totally non-obvious, which is why it got a less obscure equivalent in
> version 5)
>
>       Ethan
>
>
>> On 7/29/16, Ethan A Merritt <EAM...@gm...> wrote:
>> > On Friday, 29 July 2016 11:07:29 PM Alan Corey wrote:
>> >> On 7/29/16, Ethan Merritt <eam...@gm...> wrote:
>> >> > Use the "stats" command.  If you only need to know the y value
>> >> > range,
>> >> > that
>> >> > would be
>> >> >
>> >> >     stats "outvals.tab" using 2
>> >>
>> >> Thank you, that's close.  What it gets though are the min/max of the
>> >> data rather than the limits of the plot.  For example 17.6 - 31.9
>> >> rather than 16 - 32.  I imagine there's a relatively simple formula
>> >> that sets the plot limits to round numbers?  I think those are what I
>> >> should put through the * 1.8 + 32 conversion.  I probably can't access
>> >> the plot limits but I can derive them over again from the data limits
>> >> if I know the formula.
>> >
>> > Not a formula.  By default the axis range is extended to the next tic
>> mark.
>> > What that is depends on "set ytics".  If you do not want the axis range
>> > to extend beyond the actual data, you can use the keyword "noextend".
>> > I.e.
>> >    set yrange [*:*] noextend
>> > In that case the axis range will exactly match the min/max of the
>> > data y coordinates,.
>> >
>> > See "help noextend"
>> >
>> >               Ethan
>> >
>>
>>
>> --
>> -------------
>> No, I won't  call it "climate change", do you have a "reality problem"? -
>> AB1JX
>> Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach
>>
>


-- 
-------------
No, I won't  call it "climate change", do you have a "reality problem"? - AB1JX
Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach

Re: [Gnuplot-info] Gnuplot's internal sequence

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

On Tue, Mar 14, 2017 at 12:56 PM, Alan Corey <ala...@gm...> wrote:

> My final outcome of that last summer:
> https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=
> 175024&p=1130714#p1130714
>
> Oh, noextend must need version 5, I'm using the 4.6 that's in Raspbian
> debs, good enough for now.
>
>
In version 4.6 the equivalent command is
    set autoscale fix

(totally non-obvious, which is why it got a less obscure equivalent in
version 5)

      Ethan


> On 7/29/16, Ethan A Merritt <EAM...@gm...> wrote:
> > On Friday, 29 July 2016 11:07:29 PM Alan Corey wrote:
> >> On 7/29/16, Ethan Merritt <eam...@gm...> wrote:
> >> > Use the "stats" command.  If you only need to know the y value range,
> >> > that
> >> > would be
> >> >
> >> >     stats "outvals.tab" using 2
> >>
> >> Thank you, that's close.  What it gets though are the min/max of the
> >> data rather than the limits of the plot.  For example 17.6 - 31.9
> >> rather than 16 - 32.  I imagine there's a relatively simple formula
> >> that sets the plot limits to round numbers?  I think those are what I
> >> should put through the * 1.8 + 32 conversion.  I probably can't access
> >> the plot limits but I can derive them over again from the data limits
> >> if I know the formula.
> >
> > Not a formula.  By default the axis range is extended to the next tic
> mark.
> > What that is depends on "set ytics".  If you do not want the axis range
> > to extend beyond the actual data, you can use the keyword "noextend".
> > I.e.
> >    set yrange [*:*] noextend
> > In that case the axis range will exactly match the min/max of the
> > data y coordinates,.
> >
> > See "help noextend"
> >
> >               Ethan
> >
>
>
> --
> -------------
> No, I won't  call it "climate change", do you have a "reality problem"? -
> AB1JX
> Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach
>

Re: [Gnuplot-info] Gnuplot's internal sequence

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

My final outcome of that last summer:
https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=175024&p=1130714#p1130714

Oh, noextend must need version 5, I'm using the 4.6 that's in Raspbian
debs, good enough for now.

On 7/29/16, Ethan A Merritt <EAM...@gm...> wrote:
> On Friday, 29 July 2016 11:07:29 PM Alan Corey wrote:
>> On 7/29/16, Ethan Merritt <eam...@gm...> wrote:
>> > Use the "stats" command.  If you only need to know the y value range,
>> > that
>> > would be
>> >
>> >     stats "outvals.tab" using 2
>>
>> Thank you, that's close.  What it gets though are the min/max of the
>> data rather than the limits of the plot.  For example 17.6 - 31.9
>> rather than 16 - 32.  I imagine there's a relatively simple formula
>> that sets the plot limits to round numbers?  I think those are what I
>> should put through the * 1.8 + 32 conversion.  I probably can't access
>> the plot limits but I can derive them over again from the data limits
>> if I know the formula.
>
> Not a formula.  By default the axis range is extended to the next tic mark.
> What that is depends on "set ytics".  If you do not want the axis range
> to extend beyond the actual data, you can use the keyword "noextend".
> I.e.
>    set yrange [*:*] noextend
> In that case the axis range will exactly match the min/max of the
> data y coordinates,.
>
> See "help noextend"
>
> 		Ethan
>


-- 
-------------
No, I won't  call it "climate change", do you have a "reality problem"? - AB1JX
Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach  Impeach

Re: [Gnuplot-info] Save data

[Hans-Bernhard B. <HBB...@t-...>]

Am 13.03.2017 um 20:46 schrieb Patrick Dupre:
> Hello,
>
> I never find a positive answer to my own questioning.
> Is there a way to generate ascii files containing calculated data.
> I know gnuplot is plot oriented and it is probably not supposed
> to be used for other purposes. However, getting out calculated
> data (for example from function) would be very helpful.
> Did I miss something.

Yes.  You missed "help table"

Re: [Gnuplot-info] Save data

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

Does 'set table' do what you want?

    John

On Mon, Mar 13, 2017 at 12:46 PM, Patrick Dupre <pd...@gm...> wrote:

> Hello,
>
> I never find a positive answer to my own questioning.
> Is there a way to generate ascii files containing calculated data.
>

[Gnuplot-info] Save data

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

Hello,

I never find a positive answer to my own questioning.
Is there a way to generate ascii files containing calculated data.
I know gnuplot is plot oriented and it is probably not supposed
to be used for other purposes. However, getting out calculated
data (for example from function) would be very helpful.
Did I miss something.

Regards

===========================================================================
 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] paste ARG1

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

On Fri, Mar 10, 2017 at 11:32 AM, Patrick Dupre <pd...@gm...> wrote:

> Hello,
>
> I am not sure to understand how to use this backquotes
> Every thing between backquote is just ignored!
>

I am not suggesting that you use backquotes. They are for something else.
I am just trying to explain why it does not work to use @FILE or @ARG1
inside ordinary quotes.
Try splitting this into two stages.  First construct the string to be
executed.

   commandstring = "< paste" . ARG1 . "| awk '!/^\#/ { print $2 }' "

Confirm that this did what you wanted

   print commandstring

Then use it in a plot command.

   plot commandstring



>
> ============================================================
> ===============
> 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:* Friday, March 10, 2017 at 7:47 PM
> *From:* "Ethan Merritt" <eam...@gm...>
> *To:* "Patrick Dupre" <pd...@gm...>
> *Cc:* gnuplot <gnu...@li...>
> *Subject:* Re: [Gnuplot-info] paste ARG1
> On Fri, Mar 10, 2017 at 10:36 AM, Patrick Dupre <pd...@gm...> wrote:
> > Hello,
> >
> > This works
> > plot "< paste F0016CH2.csv | awk '!/^\#/ { print $2 }' "
> > But this does not work
> > plot "< paste . ARG1 | awk '!/^\#/ { print $2 }' "
> > neither
> > plot "< paste @ARG1 | awk '!/^\#/ { print $2 }' "
> >
> > Can I get your help?
>
> From "help macros"
>
>>
>>    Macro expansion does not occur inside either single or double quotes.
>>    However macro expansion does occur inside backquotes.
>
>
>
>
>

Re: [Gnuplot-info] paste ARG1

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

On Fri, Mar 10, 2017 at 10:36 AM, Patrick Dupre <pd...@gm...> wrote:
> Hello,
>
> This works
> plot "< paste F0016CH2.csv | awk '!/^\#/ { print $2 }' "
> But this does not work
> plot "< paste . ARG1 | awk '!/^\#/ { print $2 }' "
> neither
> plot "< paste @ARG1 | awk '!/^\#/ { print $2 }' "
>
> Can I get your help?

>From "help macros"

   Macro expansion does not occur inside either single or double quotes.
>    However macro expansion does occur inside backquotes.