ekstra lines in plot

Tying to plot from .txt file and get extras lines if I use x vector.

data = readtable(fileName, 'HeaderLines',23); data.Properties.VariableNames = {'time', 'Bolgehoyde', 'Last'};

f1 = figure(1)

subplot(3,1,1); plot(data.time, data.Bolgehoyde, 'r')

Answer 1

[Cris LaPierre]

It appears your time restarts every 20000 rows. The horizontal lines, then are when the time jumps from ~10 back to ~0.

You could sort your data based on time, but I don't think you want to do that. I think it would be better to plot each set of 20000 rows separately.

fileName = 'f1_3_A2_forsok.txt'; 
data = readtable(fileName, 'HeaderLines',23);
data.Properties.VariableNames = {'time', 'Bolgehoyde', 'Last'};

% Identify where time restarts. Use that to identify each time series
tseries = diff(data.time)<0;
data.Group = cumsum([0; tseries]);

fsize = 12;
fsize2 = 10;

for s = 0:data.Group(end)
    subplot(3,1,s+1)

    yyaxis right
    plot(data.time(data.Group==s), data.Bolgehoyde(data.Group==s), 'r')
    ylabel('Overflatehevning [m]','FontSize',fsize)
    set(gca,'ycolor','k')
    
    yyaxis left
    plot(data.time(data.Group==s), data.Last(data.Group==s),'b')
    xlim([0 10])
end

[Olga Rakvag]

I see, that was the problem.Thank's a lot!