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  • GNUplot for hysteresis loop not giving graph

    From Buse Ozkan@21:1/5 to All on Wed Dec 16 05:20:47 2020
    Hi All,

    I am a PhD student in The University of Sheffield which involves doing micromagnetic simulations and drawing hysteresis loops which would take place via using NMAG package.

    However, when I follow the instructions and tutorials in the manual makeplot.gnu is not working when I searched the error to draw it with my data - doing the simple hysteresis loop example the plot.dat - an empty plot is created.

    where no loop is generated like there is no data in the file.
    (I have changed the file name from plot.dat to plot1.dat)

    I have tried the following:
    gnuplot --persist -e 'plot "plot1.dat" u 1:2'

    gnuplot make_plot.gnu
    where the make_plot.gnu is a script with;
    set term postscript eps enhanced color
    set out ‘hysteresis.eps’
    set xlabel ‘Applied field H_x (A/m)’
    set ylabel ‘M_x / M_s’
    set xrange [-1050000:1050000]
    set yrange [-1.2:1.2]
    plot ‘plot.dat’ u 1:2 ti ‘ellipsoid example’ w lp 3


    Is there any help you can give me about this?
    Also apart from the manuals are there any other tutorials present for me to understand the package more to use it effectively?

    Waiting for your reply
    Best wishes,
    Buse OZKAN

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  • From =?UTF-8?Q?J=c3=b6rg_Buchholz?=@21:1/5 to Buse Ozkan on Thu Dec 17 09:16:35 2020
    On 16.12.2020 14:20, Buse Ozkan wrote:
    I have tried the following: gnuplot --persist -e 'plot "plot1.dat" u
    1:2'

    gnuplot make_plot.gnu where the make_plot.gnu is a script with; set
    term postscript eps enhanced color set out ‘hysteresis.eps’ set
    xlabel ‘Applied field H_x (A/m)’ set ylabel ‘M_x / M_s’ set xrange [-1050000:1050000] set yrange [-1.2:1.2] plot ‘plot.dat’ u 1:2 ti ‘ellipsoid example’ w lp 3


    Is there any help you can give me about this? Also apart from the
    manuals are there any other tutorials present for me to understand
    the package more to use it effectively?

    If you first open gnuplot and then load the script you get error
    messages from gnuplot.

    load 'make_plot.gnu'


    Jörg

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