How to force Matlab to only plot some selected strings on the x-axis?

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Write
Write 2015-1-6
回答： Star Strider 2015-1-6
I have data linked to specific dates. Let's say e.g.
dates=731948:735938; n=length(dates);
which I can convert to a string of "real dates" by
dates=datestr(dates,0));
starting from 01/02/04 up to 12/5/14. Now I want to use this string as the x-axis of a plot.
plot(rand(n,1));
set(gca, 'XTick', 1:n, 'XTickLabel', dates);
The problem I have now is that there are way to many dates on the x-axis. On the resulting plot you hardly can see anything. So my question is how can I select only lets say every 100th date to be plotted on the x-axis?
Thanks already for your help.

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回答（2 个）

Julian Hapke
Julian Hapke 2015-1-6
set(gca, 'XTick', 1:100:n, 'XTickLabel', dates(1:100:n,:));
Star Strider
Star Strider 2015-1-6
Consider the datetick function.

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