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How to set the axis to display hours?

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ccs
ccs 2015-2-26
评论： ccs 2015-2-27
How can I make the datetick count from 00:00 to 23:59. This below is dispalying 00:00 for every hour.
d= datetime(start_date):1/24:datetime(end_date)+1;
hours=hour(d);
scatter(hours,rand(size(d)));
t=datenum(d);
ax=gca;
ax.XTick=1:24;
datetick(ax,'x','HH:MM','keeplimits','keepticks')

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回答（1 个）

Guillaume
Guillaume 2015-2-26
The XTick values need to be date number for datetick to work, so maybe:
ax.XTick = ceil(ax.XLim(1)):1/24:floor(ax.XLim(2));
datetick(ax,'x','HH:MM','keeplimits','keepticks');
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Guillaume
Guillaume 2015-2-27
Yes, there was a typo, missing a bracket which you added in the wrong place. I've corrected my answer
ccs
ccs 2015-2-27
>> d= datetime(start_date):1/24:datetime(end_date)+1;
>> hours=hour(d);
>> t=datenum(d);
>> scatter(hours,rand(size(d)));
>> ax=gca;
>> ax.XMinorTick='on';
>> ax.XTick = linspace(ceil(ax.XLim(1)), floor(ax.XLim(1)), 24);
While setting the 'XTick' property of Axes: Value must be a vector of type single or double whose values increase
Now it says the vector values aren't increasing. Sorry I can figure this out.

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