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how to set x axis into hours

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Innosens
Innosens 2012-6-15
i have problem . how to i set the x axis into hour. i have 10080 data and each one represents one minute of data. i want to represents x axis with 24 hour, how can I make like that

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Walter Roberson
Walter Roberson 2012-6-15
xtickat = 0:60:length(YourData)-1; %every hour from 00:00
set(gca, 'XTick', xtickat, 'XTickLabel', cellstr( num2str( mod(round(xtickat .' ./ 60),24) ) ) )
This will use hour 0, 1, 2, ... 23, 0, 1, 2, ... 23, and so on, with no indication of the day of the week (as the question asked for x axis to be in 24 hour, not for day and hour)
This will try to produce 168 ticks, which might perhaps be too much for your purposes. If so you can increase the 60 in xtickat to a more appropriate number such as 360 (6 hours).
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Innosens
Innosens 2012-6-16
sory i can't understand what do you mean, where i put the subtract one and add one.
Thanks before...
Walter Roberson
Walter Roberson 2012-6-16
mod(round(xtickat .' ./ 60),24)
would become
1 + mod(round(xtickat .' ./ 60) - 1,24)

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更多回答（1 个）

Sean de Wolski
Sean de Wolski 2012-6-15
Something along the lines of:
set(gca,'xticklabel',num2cell(num2str((0:2:22)'),2)')
  2 个评论
Walter Roberson
Walter Roberson 2012-6-15
Why use num2cell for that?
set(gca, 'xticklabel', cellstr( num2str((0:2:22).') ) )
However, this has the problem that you need exactly the matching number of Xtick values
Sean de Wolski
Sean de Wolski 2012-6-15
CELLSTR is sweet (and new to me!). I'd heard of ISCELLSTR, but not CELLSTR.

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