Re: [Gnuplot-info] How to directly sort data and plot

[Jian-Ming Z. <jm...@gm...>]

Hi, Clem,

Thanks a lot for the help. It works.

On Fri, Aug 23, 2013 at 3:36 PM, Clement Law <the...@gm...> wrote:
> Hello,
>
> I did this yesterday, in fact.
>
> In gnuplot, issue:
>
> plot "< sort -kn3nr datafile" u 1:3 w lp
>
> This should be roughly what you want.
>
> Clem
>
>
> On 22 August 2013 08:54, Jian-Ming Zheng <jm...@gm...> wrote:
>>
>> Hi,
>>
>> I have a data file which contains several columns. The data in the
>> file are not sorted. I want to sort the data of a column (for example,
>> column 3) and plot the data. I use UNIX command sort to sort the data
>> and then use gnuplot to plot the data.
>>
>> $ sort -k3nr datafile > sortfile     # sort column 3 in decreasing order
>> gnuplot> plot 'sortfile' u 3 w linespoints     # plot sorted values of
>> column 3 at x = 0, 1, 2, …
>>
>> Is it possible to directly sort the data and plot the results in
>> gnuplot? If yes, how to do it?
>>
>> Thanks
>>
>>
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>
>