Re: [Gnuplot-info] Print huge data into a single plot

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

it doesn't seem to be a good idea to use brackets (=2 characters) for
missing data, better would be to specify something like

set datafile missing "?"

and use a question mark for missing data.

there should be no problem to use many datafiles and
assign an individual y-value to each data set, e.g.

plot "datafile_1" using 1:2 with lines,\
"" using 1:3 with points pt1 ps1,\
"datafile_2" using 1:(2*$2) with lines,\
"" using 1:(2*$3) with points pt1 ps1,\
"datafile_3" using 1:(3*$2) with lines,\
"" using 1:(3*$3) with points pt1 ps1

please explain what you mean by 'output becomes miserable'?


Matthias_D wrote:
> 
> Hi,
> I'm quite new to use gnuplot. Very complicated, I think. But hope I can
> learn it.
> 
> My problem (I found a complicated sollution already, but maybe there is a
> simple one):
> 
> There are many temperatur monitoring stations. The time of their activity
> shall be plotted
> as a horizontal line (x axis is the time [hours]) as well as the hours of
> their malfunktion 
> (set a "+" on this line).
> The x axis is the time [hours] from 1 to 17544 (for 2 years).
> 
> Now I arranged the data in one file for each station. Looks like this:
> 
> First column is the time (hours), second column shows the beginning and
> end, third column shows the errors.
> 
> 567 1 []
> 678 [] 1
> 679 [] 1
> ....
> 17543 [] 1
> 17544 1 []
> 
> I inserted the brackets to tell gnuplot that here is no value to plot.
> Actually the data is logical. For various stations I choose to replace the
> "1" with "2", "3", .....
> Then the y axis will be 1, 2, 3  and so on and the data will be plotted
> horizontally for each station.
> This works fine with one file. 
> 
> plot "001.txt" using 1:2 w lines,\
>      "001.txt" using 1:3 w points pt1 ps1,\
>      "002.txt" u 1:2 w lines,\
>      "002.txt" u 1:3 w points pt1 ps1
> 
> But when I want to plot more files the output becomes miserable.
> 
> I expected to add as many files as I want, but this didn't work.
> 
> I also tried to put all the data into a single file with many columns, but
> it doesn't get better.
> 
> Often comes the message "  ';' expected. "
> 
> Thanks for every hint! 
> 

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