Re: [Gnuplot-info] ploting if a special character exist in the line

[Mahmood N. <nt_...@ya...>]

The awk command works fine. Thank you all for the effort.

  plot "< awk '/M$/{print $1\" \"$2}' data.txt" u 2


Regards,
Mahmood



________________________________
 From: BBands <bb...@gm...>
To: Leo Butler <l_b...@us...>; gnuplot <gnu...@li...> 
Sent: Tuesday, September 3, 2013 10:00 PM
Subject: Re: [Gnuplot-info] ploting if a special character exist in the line
 

Another way is to use the string operator: stringcolumn(3) or the
shorthand strcol(3). I should have seen that to start with.

    John

On Tue, Sep 3, 2013 at 10:16 AM, Leo Butler
<l_b...@us...> wrote:
> It should be ($3 eq 'M' ? $2 : 1/0) except that $3 is parsed as a
> number, not a string, so even then you don't get what you want.
>
>    So I expect that it compares the third column to 'M' and on a match return the second column. Isn't that? Now I receive
>
>      None-numeric string found where a numeric expression was expected.
>
> I think
>
> plot "< awk '/M$/{print $1\" \"$2}' data.txt" u 1:2
>
> does what you want.

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