Applying time axis limits to plots in UTC time

Hi folks, I was wondering if someone could help with some trouble I am having with regards to the formatting of some graphs I have made.

After some time I have managed to get my graphs to output what I need, with the x-axis displaying in hh:mm:ss of the day (duration type) as I had hoped. I can still apply y-axis limits using the standard ylim function since these values are decimal. However, I am unable to use xlim for my time axis to clip my plots accordingly.

Using, for example, xlim([11:17:00 11:17:30]) returns an error stating that limits 'must be a 2-element vector of increasing durations'. When i convert these hh:mm:ss times back into seconds and try the xlim, I get the same error. Does anyone know how I might go about fixing this with time durations in this format?

Thanks.

Answer 1

[Voss]

Here's an example of setting the axes x-limits using duration values:

x = duration(1,1:30,0) % duration x

x = 1×30 duration array
Columns 1 through 18

   01:01:00   01:02:00   01:03:00   01:04:00   01:05:00   01:06:00   01:07:00   01:08:00   01:09:00   01:10:00   01:11:00   01:12:00   01:13:00   01:14:00   01:15:00   01:16:00   01:17:00   01:18:00

Columns 19 through 30

   01:19:00   01:20:00   01:21:00   01:22:00   01:23:00   01:24:00   01:25:00   01:26:00   01:27:00   01:28:00   01:29:00   01:30:00

y = rand(size(x)); % random y

plot(x,y) % plot

xl = duration(1,[10 15],0) % duration x-lim values

xl = 1×2 duration array
   01:10:00   01:15:00

xlim(xl) % apply the x-lim

[Calum]

Thanks Voss - creating array in the right format using the duration function is the kind of thing I was looking for!

Calum.

[Voss]

You're welcome!