Why can I not zoom on my data?

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V
V 2013-1-29
Good afternoon, I am trying to zoom on some data in a plot. They are data at 200Hz, and I want to zoom on 7s. For some reasons, Matlab select a longer range of data(it looks like 15s, and its center the 7 chosen seconds). I cannot also zoom with the mouse on the x axis of the picture. Here is the code I am using:
datenummin=datenum(2012,4,30,15,19,0);
datenummax=datenum(2012,4,30,15,19,7);
dateplot=datenummin:1/24/60/60:datenummax;
plot(Time, data)
set(gca,'XTick',dateplot,'FontSize',24)
datetick('x','SS','keepticks')
axis([datenummin datenummax 0 3])
Many thanks for your help!

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采纳的回答

Jan
Jan 2013-1-29
Please try what happens, if the period of time is not in 2012, but in the year 0.
The OpenGL renderer uses single data and this could limit the resolution of the displayed values. Please test which renderer is used:
get(gcf, 'Renderer')

更多回答（1 个）

V
V 2013-1-29
Thanks! It works when using a period of time in year zero. It even works with different Renderers.

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