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Subscript indices must either be real positive integers or logicals while using plot function

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figure(1)
%time_north_sec=1x111 double
%Q_north_cut_off=111x111 double
plot(time_north_sec,Q_north_cut_off(:,1)*1e6)
xlabel('Lag (second)','FontWeight', 'bold')
ylabel('autocovariance function (mm^2)','FontWeight', 'bold')
title('North Autocovariance Function')
set(gca, 'fontsize', 16, 'fontweight', 'bold');
ylim = get(gca,'YLim');
ylim([31, 0]);
After running the code I get "Subscript indices must either be real positive integers or logicals while using plot function" although the plot seems OK.

Accepted Answer

KSSV
KSSV on 16 Dec 2016
Edited: KSSV on 16 Dec 2016
figure(1)
%time_north_sec=1x111 double
%Q_north_cut_off=111x111 double
plot(time_north_sec,Q_north_cut_off(:,1)*1e6)
xlabel('Lag (second)','FontWeight', 'bold')
ylabel('autocovariance function (mm^2)','FontWeight', 'bold')
title('North Autocovariance Function')
set(gca, 'fontsize', 16, 'fontweight', 'bold');
% ylim = get(gca,'YLim');
ylim([0 31]);
If you are not able to see your plot, try to play with ylim()....mention the ranges min first and then max.
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