Re: [Gnuplot-info] Broken histograms when using smooth frequency on data file with discontinuities

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

David Lindelöf <lindelof <at> ieee.org> writes:

> I would like to plot the distribution of a variable and I follow the
> directions given in the "Gnuplot in Action" book:
> 
> I define a binning function:
> 
> bin(x,s) = s*int(x/s)
> 
> And then I use the plot command:
> 
> plot './data.dat' u (bin($2, 0.2)):(1) smooth frequency
> 
> However, the 'data.dat' file has a number of discontinuities in it
> (i.e. blank lines). This causes the output to show several sets of
> histograms, one for each continuous set of data.
> 
> Is there any workaround for this? I would like the histogram to show
> the distribution in the whole file, and to ignore discontinuities.

maybe use an external program to omit the blank lines:

plot '< awk "{if (NF) print}" ./data.dat' u (bin($2, 0.2)):(1) smooth frequency

"awk" should be installed on every unix system, for windows systems google
for 'awk windows'.