Problem with x-axis and dates in plot
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Hi everybody,
I want to plot 228 datapoints, which correspond to monthly observations from 01/1993 to 12/2011.
The x-axis of the plot should be in 'yyyy' format, showing the first year (1993), the last year (2011) and maybe three or four equally spaced dates in between those years.
How can I do that?
Thanks in advance, Chris
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답변 (2개)
Kelly Kearney
2013년 11월 7일
If you're not too picky about exactly which years are labeled, datetick should do it. Assuming t holds your time data (as datenumbers):
y = rand(228,1);
[month, yr] = ndgrid(1:12, 1993:2011);
t = datenum(yr(:), month(:), ones(numel(yr),1));
plot(t,y);
datetick('x', 'yyyy');
If you want to be more specific about exactly which years are labeled, set the xticks manually before calling datetick, and then use the 'keepticks' and 'keeplimits' options.
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Christian F.
2013년 11월 8일
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Kelly Kearney
2013년 11월 8일
So set your preferred axis limits, and then use 'keeplimits' to make datetick respect this:
y = rand(228,1);
[month, yr] = ndgrid(1:12, 1993:2011);
t = datenum(yr(:), month(:), ones(numel(yr),1));
plot(t,y);
set(gca, 'xlim', [min(t) max(t)]);
datetick('x', 'yyyy', 'keeplimits');
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