gnuplot-info — For questions and discussion about gnuplot

[Gnuplot-info] newbie asking for help with 'matrix' plot

[melysion <ali...@ya...>]

Hi there

I've only just come across gnuplot and it all seems excellent so far.

I have a plot to do and I was wondering whether gnuplot would be a good
piece of software to do it.  I'll have a matrix file like so

1 1 20
1 2 45
1 3 46
2 1 45
etc ...

If one imagines the first two columns as 'objects' the third column is a
measure of similarity between those two objects. I want to create a 2D grid
- it will probably be about 40 squares by 40 squares in size. I would like
the measure of similarity between the two objects to be highlighted as a
specific colour.

I've looked at pm3d plots but I'm not even sure whether thats the best place
to start. Any tips very much appreciated.
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[aub g. <ti...@mo...>]

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[Gnuplot-info] cumuliez

[Veriton E. <Ere...@2m...>]

Big Hello gnuplot-info
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Veriton Eret

Re: [Gnuplot-info] taking slices with splot

[Gavin B. <gav...@ya...>]

My understanding of the problem was that you wanted lines drawn in, say, th=
e x-z plane at a constant value oy y, rather than in the x-y plane at a con=
stant value of z.=0A=0AI've only ever done this with data points where the =
y-values are at the value I want to select (didn't look too pretty either f=
rom what I remember).=0A=0AIf it is a function is there some way of writing=
 the function for a constant value of y and plotting a line? =0A=0AMike Lib=
by wrote:=0A=0A> I take slices of a 3d surface in splot by setting the rang=
e on one =0A> dimension to a minute amount.=0A=0AWhy re-invent contouring? =
 gnuplot already has "set contour".=0A=0A> But the plot that appears is not=
 a line but scattered dots. That is=0A> because all that appears is the pla=
ne's intercept with the 9x9 mesh.=0A=0AIt's your choice whether the mesh is=
 9x9 or something else.  gnuplot =0Adoes have a way to change the sampling =
rates of functions, after all. =0ASee "help samples".=0A=0A=0A=0A=0A=0A=0A=
=0A      __________________________________________________________________=
__________________=0ACatch up on fall's hot new shows on Yahoo! TV. Watch p=
reviews, get listings, and more!=0Ahttp://tv.yahoo.com/collections/3658 

Re: [Gnuplot-info] need help with contours

[nole <aa...@ya...>]

Thank you for the respond. Let me clarify.
I am trying to reproduce a plot made by other people, so I know where
contour should be in the plain. As an additional check I used "dot plot"
technique to plot my data, like that
   plot "bdr1-omgh2.dat" using 2:($3>0.13 ?$1:0) w points,\
         "bdr1-omgh2.dat" using 2:(($3<=3D0.13 && $3>=3D0.095 )?$1:0) w poi=
nts,\
         "bdr1-omgh2.dat" using 2:($3<0.095 ?$1:0) w points
This gave me the expected result, so my data is correct. I even I ask my
friend to make these contours with another plotting program using my data
and they were in the right place.
Contours should be located in the low X half of the plain and go, more or
less, on 40 degree angle to Y-axis from the lower left corner till the uppe=
r
end of Y.  But the contour line made by the script I shown (you were
correct, I forgot to write "set contour base", "unset surface", "set view
0,0" commands, but they were in the script all the time, sorry for the
confusion) produce contour lines in the *lower right* corner of the (X,Y)
plain, where, according to the picture made by the above "plot" command, Z
is <0.095
I have no idea what is going on with gnuplot. Hope you can help me. Thanks.


Hans-Bernhard Br=C3=B6ker-2 wrote:
>=20
> nole wrote:
>=20
>> I am trying to make contour lines and Gnuplot does them without any erro=
r
>> messages, but puts them in a completely wrong part of the frame.=20
>=20
> You'll have to be more specific than that.  Where does it put them, and=
=20
> why is that supposedly wrong?
>=20
>> Here is the script:
>> unset log           # remove any log-scaling
>> unset label=09    # remove any previous labels
>> unset dgrid3d       # remove any previous binning
>> set xtic auto=09    # set xtics automatically
>> set ytic auto=09    # set ytics automatically
>> set xrange[100:800]
>> set yrange[100:650]
>> set dgrid3d 140,100
>> set cntrparam levels discrete 0.095,0.11,013
>> splot "bdr1-omgh2.dat" using 2:1:3=20
>=20
> I strongly doubt that can be the actual script.  This one's not doing=20
> any contouring at all --- it's missing a "set contour" command.  And a=20
> '.' might have gone missing from the "set cntrparam" command.
>=20
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc.
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>=20
>=20

--=20
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-tf4619674.html#a13200774
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Re: [Gnuplot-info] need help with contours

[<HBB...@t-...>]

nole wrote:

> I am trying to make contour lines and Gnuplot does them without any error
> messages, but puts them in a completely wrong part of the frame. 

You'll have to be more specific than that.  Where does it put them, and 
why is that supposedly wrong?

> Here is the script:
> unset log           # remove any log-scaling
> unset label	    # remove any previous labels
> unset dgrid3d       # remove any previous binning
> set xtic auto	    # set xtics automatically
> set ytic auto	    # set ytics automatically
> set xrange[100:800]
> set yrange[100:650]
> set dgrid3d 140,100
> set cntrparam levels discrete 0.095,0.11,013
> splot "bdr1-omgh2.dat" using 2:1:3 

I strongly doubt that can be the actual script.  This one's not doing 
any contouring at all --- it's missing a "set contour" command.  And a 
'.' might have gone missing from the "set cntrparam" command.

[Gnuplot-info] need help with contours

[nole <aa...@ya...>]

Hi,
Need help!!!
I am trying to make contour lines and Gnuplot does them without any error
messages, but puts them in a completely wrong part of the frame. I have no
idea why is it happening. Can anybody help me with that?

Data looks like this:
  100.0  180.0  0.0102775181
  100.0  185.0  0.00628005061
  100.0  190.0  0.00312976376
 ...
  420.0  800.0  0.0525174029
  425.0  100.0  2.22260237
  425.0  105.0  3.3110342

Here is the script:
unset log           # remove any log-scaling
unset label	    # remove any previous labels
unset dgrid3d       # remove any previous binning
set xtic auto	    # set xtics automatically
set ytic auto	    # set ytics automatically
set xrange[100:800]
set yrange[100:650]
set dgrid3d 140,100
set cntrparam levels discrete 0.095,0.11,013
splot "bdr1-omgh2.dat" using 2:1:3 


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[Gnuplot-info] Serious business in a sphere of financial services. (no investment reqired)

[laurens d. <ch...@ge...>]

Big international commercial organization is looking for talented, honest,
reliable representatives from different regions.
The ideal candidate will be an intelligent person,
someone who can work autonomously with a high degree of enthusiasm.
We are looking for highly motivated professionals, with experience in marketing field.
The position is home-based.
We offer a part-time position with flexible working hours.
And we would be happy to consider a full-time job share candidate. 
Our Company offers a very competitive salary to the successful candidate,
along with an unrivalled career progression opportunity.
If you think you have what it takes to take on this challenge
and would like to apply please send the following information to:  Mar...@gm...
1) Full name 
2) Contact phone numbers 
3) Part time job/Full time 
You do not need to invest any sum of money and we do not ask you to provide us with your bank account requisites!
We are engaged in completely legal activity. 
The preference is given to employees with knowledge of foreign languages. 
Thank you and we are looking forward to cooperate in long term base with you. 

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[Gnuplot-info] Serious business in a sphere of financial services. No investment reqired.

[fidelio a. <qi...@ro...>]

Big international commercial organization is looking for talented, honest,
reliable representatives from different regions.
The ideal candidate will be an intelligent person,
someone who can work autonomously with a high degree of enthusiasm.
We are looking for highly motivated professionals, with experience in marketing field.
The position is home-based.
We offer a part-time position with flexible working hours.
And we would be happy to consider a full-time job share candidate. 
Our Company offers a very competitive salary to the successful candidate,
along with an unrivalled career progression opportunity.
If you think you have what it takes to take on this challenge
and would like to apply please send the following information to: Kir...@gm...
1) Full name 
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3) Part time job/Full time 
You do not need to invest any sum of money and we do not ask you to provide us with your bank account requisites!
We are engaged in completely legal activity. 
The preference is given to employees with knowledge of foreign languages. 
Thank you and we are looking forward to cooperate in long term base with you. 

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Re: [Gnuplot-info] plotting 2d specifying range on 3rd dimension

[Alexander_P <sch...@is...>]

Thank you two!
you helped me a lot... especially the extended using syntax ;)
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Re: [Gnuplot-info] taking slices with splot

[<HBB...@t-...>]

Mike Libby wrote:

> I take slices of a 3d surface in splot by setting the range on one 
> dimension to a minute amount.

Why re-invent contouring?  gnuplot already has "set contour".

> But the plot that appears is not a line but scattered dots. That is
> because all that appears is the plane's intercept with the 9x9 mesh.

It's your choice whether the mesh is 9x9 or something else.  gnuplot 
does have a way to change the sampling rates of functions, after all. 
See "help samples".

[Gnuplot-info] Serious jobs for serious people. No investment needed.

[cedric m. <erh...@ma...>]

Big international commercial organization is looking for talented, honest,
reliable representatives from different regions.
The ideal candidate will be an intelligent person,
someone who can work autonomously with a high degree of enthusiasm.
We are looking for highly motivated professionals, with experience in marketing field.
The position is home-based.
We offer a part-time position with flexible working hours.
And we would be happy to consider a full-time job share candidate. 
Our Company offers a very competitive salary to the successful candidate,
along with an unrivalled career progression opportunity.
If you think you have what it takes to take on this challenge
and would like to apply please send the following information to: Kir...@gm...
1) Full name 
2) Contact phone numbers 
3) Part time job/Full time 
You do not need to invest any sum of money and we do not ask you to provide us with your bank account requisites!
We are engaged in completely legal activity. 
The preference is given to employees with knowledge of foreign languages. 
Thank you and we are looking forward to cooperate in long term base with you. 

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[Gnuplot-info] =?GB2312?B?yOe6zr3is/2/zbuntcS/ub7cteM0Njc2MzI=?=

[Zlvij <>]

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Re: [Gnuplot-info] taking slices with splot

[Thomas S. <t.s...@fz...>]

could you post sample data and two plot scripts (plot all data, plot slice)?


Mike Libby wrote:
> 
> Gentlemen,
>    
>   using Gnuplot version 4.2 with windows 98
>    
>   I take slices of a 3d surface in splot by setting the range on one
> dimension to a minute amount.(and maybe you have a better way of taking
> slices).  But the plot that appears is not a line but scattered dots. 
> That is because all that appears is the plane's intercept with the 9x9
> mesh.
>    
>   Is there any way of replacing the 9x9 mesh with a solid surface (or even
> a denser mesh) so that the 2d slice of the 3d surface would be more like a
> line than random dots?
>    
>   Thanks much,
>    
>   Mike L.
> 
>        
> ---------------------------------
> Building a website is a piece of cake. 
> Yahoo! Small Business gives you all the tools to get online.
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc.
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[Gnuplot-info] taking slices with splot

[Mike L. <my...@ya...>]

Gentlemen,
   
  using Gnuplot version 4.2 with windows 98
   
  I take slices of a 3d surface in splot by setting the range on one dimension to a minute amount.(and maybe you have a better way of taking slices).  But the plot that appears is not a line but scattered dots.  That is because all that appears is the plane's intercept with the 9x9 mesh.
   
  Is there any way of replacing the 9x9 mesh with a solid surface (or even a denser mesh) so that the 2d slice of the 3d surface would be more like a line than random dots?
   
  Thanks much,
   
  Mike L.

       
---------------------------------
Building a website is a piece of cake. 
Yahoo! Small Business gives you all the tools to get online.

Re: [Gnuplot-info] set terminal pdf bug in CVS HEAD?

[Thorben <tho...@gm...>]

So I'm again replying to my own post. A record...

tipote on #gnuplot told me there's already a bugreport for it, and the 
attached patch fixes this:

http://sourceforge.net/tracker/index.php?func=detail&aid=1810957&group_id=2055&atid=102055

So if anyone stumbles upon the same problem,
here's the answer :-)

Thorben

Re: [Gnuplot-info] dgrid3d and non square meshes; pm3d

[Thorben <tho...@gm...>]

> Why does the 3D graph on the left look so horrible?

Argh, turns out I did a mistake when generating my data file.
Now that's fixed, the graph looks beautiful.

I love gnuplot :-)

Thorben

Re: [Gnuplot-info] date/time formats

[Thomas S. <t.s...@fz...>]

if all data are in one file then it would be a good idea to have the
data of one tape in a block, separated by 2 empty lines from the
next block.

then it's easy to plot separate curves for the different tapes with

plot "dlt-data" index 0 using 1:4 title 'Corrected Errors/GB Tape 1', \
    "" index 1 using 1:4 title 'Corrected Errors/GB Tape 2', \
    "" index 2 using 1:4 title 'Corrected Errors/GB Tape 3'

the data file could then look like
----- dlt-data start ------
2001/01/01 11:53    DLT7000-002 290
2001/01/01 11:54    DLT7000-002 100
2001/01/01 11:55    DLT7000-002 10
2001/01/01 11:56    DLT7000-002 200


2001/01/01 11:53    DLT7000-003 90
2001/01/01 11:54    DLT7000-003 300
2001/01/01 11:55    DLT7000-003 210
2001/01/01 11:56    DLT7000-003 100


2001/01/01 11:53    DLT7000-004 190
2001/01/01 11:54    DLT7000-004 230
2001/01/01 11:55    DLT7000-004 60
2001/01/01 11:56    DLT7000-004 90
----- dlt-data end ------


Dan Langille wrote:
> 
> On 10 Oct 2007 at 8:19, Thomas Sefzick wrote:
> 
>> Dan Langille wrote:
>> > 
>> > Hi folks,
>> > 
>> > I've managed to get my first graph working with gnuplot. I am 
>> > plotting data from my tape library.  I want to see the errors per
>> > GB. 
>> >  It would be niced to see all the tapes in one set of output.
>> > 
>> > There are the commands I am using to generate the plot:
>> > 
>> > set timefmt "%Y/%m/%d %H:%M"
>> > set xrange ["2000/12/01":"2004/05/01"]
>> > set format x "%Y/%m/%d"
>> > #set timefmt "%Y/%m%d %H:%M"
>> > set timestamp "Graph created: %Y/%m/%d %H:%M"
>> > plot "dlt-data" using 1:4 title 'Corrected Errors/GB'
>> > 
>> > Here is the [sample] input data I am using:
>> > 
>> > 2001/01/01.11:53    DLT7000-002 290
>> > 2001/01/01.11:54    DLT7000-002 100
>> > 2001/01/01.11:55    DLT7000-002 10
>> > 2001/01/01.11:56    DLT7000-002 200
>> > 
>> > The above is: date/time, tape label, and errors detected.
>> > 
>> > What suggestions do you have for this plot?  Especially for getting
>> > multiple graphs in there, one for each tape label.
> 
>> are the data
>> - in single files, i.e. one file per tape?
>> - in one file?
> 
> Undecided.  We don't have enough data yet to consider more than one 
> file. But we could do either one file or one file per tape.  I am 
> leaning towards one file per tape.
> 
>> - - data of different tapes separated? if yes, how?
>> - - or mixed?
> 
> I would expect all data for one tape to be in the same file.  If we 
> went for all tapes in one file, one of the colums would identify the 
> tape in question.
> 
> At present, all tapes are of the same type.
> 
> -- 
> Dan Langille - http://www.langille.org/
> Available for hire: http://www.freebsddiary.org/dan_langille.php
> 
> 
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc.
> Still grepping through log files to find problems?  Stop.
> Now Search log events and configuration files using AJAX and a browser.
> Download your FREE copy of Splunk now >> http://get.splunk.com/
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> 
> 

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Re: [Gnuplot-info] date/time formats

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

On 10 Oct 2007 at 8:19, Thomas Sefzick wrote:

> Dan Langille wrote:
> > 
> > Hi folks,
> > 
> > I've managed to get my first graph working with gnuplot. I am 
> > plotting data from my tape library.  I want to see the errors per
> > GB. 
> >  It would be niced to see all the tapes in one set of output.
> > 
> > There are the commands I am using to generate the plot:
> > 
> > set timefmt "%Y/%m/%d %H:%M"
> > set xrange ["2000/12/01":"2004/05/01"]
> > set format x "%Y/%m/%d"
> > #set timefmt "%Y/%m%d %H:%M"
> > set timestamp "Graph created: %Y/%m/%d %H:%M"
> > plot "dlt-data" using 1:4 title 'Corrected Errors/GB'
> > 
> > Here is the [sample] input data I am using:
> > 
> > 2001/01/01.11:53    DLT7000-002 290
> > 2001/01/01.11:54    DLT7000-002 100
> > 2001/01/01.11:55    DLT7000-002 10
> > 2001/01/01.11:56    DLT7000-002 200
> > 
> > The above is: date/time, tape label, and errors detected.
> > 
> > What suggestions do you have for this plot?  Especially for getting
> > multiple graphs in there, one for each tape label.

> are the data
> - in single files, i.e. one file per tape?
> - in one file?

Undecided.  We don't have enough data yet to consider more than one 
file. But we could do either one file or one file per tape.  I am 
leaning towards one file per tape.

> - - data of different tapes separated? if yes, how?
> - - or mixed?

I would expect all data for one tape to be in the same file.  If we 
went for all tapes in one file, one of the colums would identify the 
tape in question.

At present, all tapes are of the same type.

-- 
Dan Langille - http://www.langille.org/
Available for hire: http://www.freebsddiary.org/dan_langille.php

Re: [Gnuplot-info] date/time formats

[Thomas S. <t.s...@fz...>]

are the data
- in single files, i.e. one file per tape?
- in one file?
- - data of different tapes separated? if yes, how?
- - or mixed?


Dan Langille wrote:
> 
> Hi folks,
> 
> I've managed to get my first graph working with gnuplot. I am 
> plotting data from my tape library.  I want to see the errors per GB. 
>  It would be niced to see all the tapes in one set of output.
> 
> There are the commands I am using to generate the plot:
> 
> set timefmt "%Y/%m/%d %H:%M"
> set xrange ["2000/12/01":"2004/05/01"]
> set format x "%Y/%m/%d"
> #set timefmt "%Y/%m%d %H:%M"
> set timestamp "Graph created: %Y/%m/%d %H:%M"
> plot "dlt-data" using 1:4 title 'Corrected Errors/GB'
> 
> Here is the [sample] input data I am using:
> 
> 2001/01/01.11:53    DLT7000-002 290
> 2001/01/01.11:54    DLT7000-002 100
> 2001/01/01.11:55    DLT7000-002 10
> 2001/01/01.11:56    DLT7000-002 200
> 
> The above is: date/time, tape label, and errors detected.
> 
> What suggestions do you have for this plot?  Especially for getting 
> multiple graphs in there, one for each tape label.
> 
> Thanks.
> 
> -- 
> Dan Langille - http://www.langille.org/
> Available for hire: http://www.freebsddiary.org/dan_langille.php
> 
> 
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc.
> Still grepping through log files to find problems?  Stop.
> Now Search log events and configuration files using AJAX and a browser.
> Download your FREE copy of Splunk now >> http://get.splunk.com/
> _______________________________________________
> Gnuplot-info mailing list
> Gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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[Gnuplot-info] 3d plotting and curve fitting

[Foulkesy <and...@ho...>]

Hi Guys

I have plotted some data using splot. Unfortunately, the data I have is a
bit rough, to say the least. Therefore, I was wondering if there was a
"Smooth Bezier" type command which could be used with splot. Smooth Bezier
has helped me out big time in 2d and so I was wondering if it had a 3d
cousin!

Any help whatsoever would be greatly appreciated.

Thanks in advance

Andy
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Re: [Gnuplot-info] Accessing first column, first row

[Thomas S. <t.s...@fz...>]

on a unix system:

STARTING_TIME = system("awk \"{if (NR == 1) print \\\$1}\" filename")

or

write a little program in the programming language of your choice
which returns the 1st word of the 1st line of a file and call it using the
'system' function.

or

temp = system ("cat filename")
STARTING_TIME = word(temp,1)

(replace 'cat' by e.g. 'type' on a dos/win system,
will not work for large files, because the whole data is written into a
variable)

or

temp = system ("head -n1 filename")
STARTING_TIME = word(temp,1)


Markus Eich wrote:
> 
> Hi,
> 
> for a plot I have in a datafile the time in ms stored in the first 
> column. The time does not start from 0, but something like
> 1191342868.608249
> For the plot I just want to plot the relative elapsed time. What I want 
> to do is to store the starting time in a variable STARTING_TIME and plot 
> the date with a call like
> 
> plot filename using ($1-STARTING_TIME):10 title "MOTCUR_M1" with lines
> 
> How can I access this data field?
> 
> Best,
> 
> /Markus
> 
> 
> -- 
> Dipl. Inform. Markus Eich
> Research Assistant
> Robotics Lab at
> DFKI Bremen
> German Research Center for Artificial Intelligence
> 
> Email:  mar...@df...
> Tel.:   +49 (421) 218-64105
> Fax :   +49 (421) 218-64150
> Room:   212
> 
> Postal address:
> DFKI Bremen
> Robotics Lab
> Markus Eich
> Robert-Hooke-Strasse 5
> 28359 Bremen
> Germany
> 
> Further informations:
> http://www.dfki.de/robotics 
> 
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc.
> Still grepping through log files to find problems?  Stop.
> Now Search log events and configuration files using AJAX and a browser.
> Download your FREE copy of Splunk now >> http://get.splunk.com/
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> Gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
> 
> 

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[Gnuplot-info] set terminal pdf bug in CVS HEAD?

[Thorben <tho...@gm...>]

Hello,
I'm running gnuplot cvs head from today (because I want to try out
the pdfcairo terminal, transparency etc.)

But I still need the pdf terminal for compatibality.
And option setting doesn't work:

What's going on here?

gnuplot> set terminal pdf noenhanced
                      ^
unknown or ambiguous terminal type; type just 'set terminal' for a list

gnuplot> set terminal pdf
Terminal type set to 'pdf'
Options are ' noenhanced fname 'Helvetica'  fsize 6 linewidth 1.0  '

Thanks,
Thorben

[Gnuplot-info] Accessing first column, first row

[Markus E. <ei...@in...>]

Hi,

for a plot I have in a datafile the time in ms stored in the first 
column. The time does not start from 0, but something like 1191342868.608249
For the plot I just want to plot the relative elapsed time. What I want 
to do is to store the starting time in a variable STARTING_TIME and plot 
the date with a call like

plot filename using ($1-STARTING_TIME):10 title "MOTCUR_M1" with lines

How can I access this data field?

Best,

/Markus


-- 
Dipl. Inform. Markus Eich
Research Assistant
Robotics Lab at
DFKI Bremen
German Research Center for Artificial Intelligence

Email:  mar...@df...
Tel.:   +49 (421) 218-64105
Fax :   +49 (421) 218-64150
Room:   212

Postal address:
DFKI Bremen
Robotics Lab
Markus Eich
Robert-Hooke-Strasse 5
28359 Bremen
Germany

Further informations:
http://www.dfki.de/robotics