How to set dates for x-axis?

Hey everyone,

I know this has been discussed on the internet numerously, but I still cannot find a solution to my problem:

I am using a date vector that contains dates and times from

 start=datenum(2010,05,15,0,0,0);

to

 fin=datenum(2010,05,30,23,0,0);

So each day contains 24 values (for the 24 hours of the day).

Now I want to plot some data for these dates and I want a tick for each day on my x-axis and a label for each tick like this: May 15, May 16, May 17 .... May 30. The tick should be in the middle of each day, so every day at 12 o'clock would be great. How can I do that?

Thanks a lot!!

Answer 1

[Star Strider]

This works:

start = datenum(2010,05,15,0,0,0);
fin=datenum(2010,05,30,23,0,0);
hrvct = start:(1/24):fin;                           % Create Hourly Dates
dtks = start+0.5:fin;                               % Ticks At Noon
dhv = datevec(dtks);
y = (0:length(hrvct)-1)*0.005-sin((0:length(hrvct)-1)/24*2*pi+0.25)*5+randn(size(hrvct))*0.05+20; % Create Y-Data

figure(1)
plot(hrvct, y)
grid
set(gca, 'XTick', dtks, 'XTickLabelRotation',30)    % Label Rotation (R2014b)
datetick('x', 'mmm dd', 'keepticks')
xlabel('Time')
ylabel('Temperature (\circC)')

You have to have R2014b to use the 'XTickLabelRotation' property. Otherwise, either reduce your x-axis font size or use the text function to create a vector of rotated dates.

Example plot: