gnuplot-info

[Gnuplot-info] something like plot filename using VarOne:($VarTwo*1.1) possible?

[Jan N. <jnn...@go...>]

Hi all,
i have to plot a lot of datafiles in which the position of the columns
could change. A change of the datafiles is not possible. So VarOne
could be e.g on Pos 1 in one file, then on Pos. 17. So i wrote a
script that writes the Variable Positions in a file like
VarOne=17
VarTwo=12
and load the file at the beginnning. That works fine, but now i have
to change some values by a factor. Something like

plot filename using 1:($2*1.1)

of course works. But it does not work with the User Variables, e.g.

plot filename using VarOne:($VarTwo*1.1)

Does anyone knows a solution?

With best regards

Jan

Re: [Gnuplot-info] something like plot filename using VarOne:($VarTwo*1.1) possible?

[Xiao-Yong J. <xj...@co...>]

On Thu, 27 May 2010 19:07:06 +0200, Jan Nowack wrote:

> Hi all,
> i have to plot a lot of datafiles in which the position of the columns
> could change. A change of the datafiles is not possible. So VarOne
> could be e.g on Pos 1 in one file, then on Pos. 17. So i wrote a
> script that writes the Variable Positions in a file like
> VarOne=17
> VarTwo=12
> and load the file at the beginnning. That works fine, but now i have
> to change some values by a factor. Something like

> plot filename using 1:($2*1.1)

> of course works. But it does not work with the User Variables, e.g.

> plot filename using VarOne:($VarTwo*1.1)

> Does anyone knows a solution?

Hi,

I don't know what is the best way to achieve this, but I
found myself sometimes using a combination of 'sprintf' and
'eval'.

In your case, I believe 'eval' would be suffice

  eval 'plot filename using '.VarOne.':($'.VarTow.'*1.1)'

Best,
Xiao-Yong

> With best regards

> Jan
-- 
J    c/*    __o/*
X    <\     * (__
Y    */\      <

Re: [Gnuplot-info] something like plot filename using VarOne:($VarTwo*1.1) possible?

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

plot filename using VarOne:(column(VarTwo)*1.1)


Jan Nowack-2 wrote:
> 
> Hi all,
> i have to plot a lot of datafiles in which the position of the columns
> could change. A change of the datafiles is not possible. So VarOne
> could be e.g on Pos 1 in one file, then on Pos. 17. So i wrote a
> script that writes the Variable Positions in a file like
> VarOne=17
> VarTwo=12
> and load the file at the beginnning. That works fine, but now i have
> to change some values by a factor. Something like
> 
> plot filename using 1:($2*1.1)
> 
> of course works. But it does not work with the User Variables, e.g.
> 
> plot filename using VarOne:($VarTwo*1.1)
> 
> Does anyone knows a solution?
> 
> With best regards
> 
> Jan
> 
> ------------------------------------------------------------------------------
> ThinkGeek and WIRED's GeekDad team up for the Ultimate 
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the 
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> gnuplot-info mailing list
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Re: [Gnuplot-info] something like plot filename using VarOne:($VarTwo*1.1) possible?

[Jan N. <jnn...@go...>]

Thanks!

2010/6/3 Thomas Sefzick <t.s...@fz...>:
>
> plot filename using VarOne:(column(VarTwo)*1.1)
>
>
> Jan Nowack-2 wrote:
>>
>> Hi all,
>> i have to plot a lot of datafiles in which the position of the columns
>> could change. A change of the datafiles is not possible. So VarOne
>> could be e.g on Pos 1 in one file, then on Pos. 17. So i wrote a
>> script that writes the Variable Positions in a file like
>> VarOne=17
>> VarTwo=12
>> and load the file at the beginnning. That works fine, but now i have
>> to change some values by a factor. Something like
>>
>> plot filename using 1:($2*1.1)
>>
>> of course works. But it does not work with the User Variables, e.g.
>>
>> plot filename using VarOne:($VarTwo*1.1)
>>
>> Does anyone knows a solution?
>>
>> With best regards
>>
>> Jan
>>
>> ------------------------------------------------------------------------------
>> ThinkGeek and WIRED's GeekDad team up for the Ultimate
>> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the
>> lucky parental unit.  See the prize list and enter to win:
>> http://p.sf.net/sfu/thinkgeek-promo
>> _______________________________________________
>> gnuplot-info mailing list
>> gnu...@li...
>> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>>
>>
>
> --
> View this message in context: http://old.nabble.com/something-like-plot-filename-using-VarOne%3A%28%24VarTwo*1.1%29-possible--tp28767804p28771588.html
> Sent from the Gnuplot - User mailing list archive at Nabble.com.
>
>
> ------------------------------------------------------------------------------
> ThinkGeek and WIRED's GeekDad team up for the Ultimate
> GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the
> lucky parental unit.  See the prize list and enter to win:
> http://p.sf.net/sfu/thinkgeek-promo
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>



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