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Text in plot that has x-axis in terms of datetime

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George Mathai
George Mathai 2015-9-1
回答： Ricardo 2016-6-21
Hello,
I have a plot that uses a datetime structure as an x axis and I want to add a text string on my plot. Typically I would do that using text(x,y,'text'). In this case I am not sure what I would use as 'x'. The 'annotation' command uses normalized values that do not move when I zoom or pan the plot. Would appreciate some input on what I would use as my 'x' in the text function. Thanks!

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采纳的回答

Ricardo
Ricardo 2016-6-21
I just had this problem and I could position the text using datenum in this way:
text(datenum( the_date ), y_axis_val, text)

更多回答（1 个）

dpb
dpb 2015-9-2
A date number of the time x. Same idea as with ordinary axes; the date axes is one with the limits based on the first/last date of the x vector. You can retrieve these from the plot as
xlohi=xlim;
then scale between those two at whatever point you wish would be one way...
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dpb
dpb 2015-9-2
If (as I presume given the comment) this solved the problem, please "ACCEPT" the answer -- besides my ego, it notifies other users who find the question the answer was considered/is a good 'un, thereby (hopefully) helping fulfill the idea of the forum in being a database repository...

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