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add vertical lines using xline

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I have the following graphs. There are 2 graphs in 1 figure and in x axis are date and times.
I would like to add vertical lines using the command xline but i cannot find how to use it in date and times.
E.g. I want to add a vertical line at 20/01 7.00am
Thank you

Accepted Answer

Star Strider
Star Strider on 25 Feb 2022
It would helpo to understand what the dates are in the posted code.
xline(datetime('20/01 7:00am', 'InputFormat','dd/MM hh:mma'))
The 'InputFormat' string may need to be changed to ocnform with the units on the x-axis.
  1 Comment
Walter Roberson
Walter Roberson on 25 Feb 2022
Note: if you are still using serial date numbers together with datetick() then the approach shown here will not work: you would need to pass a serial data number to xline() for that case.
Likewise if you are passing in year + fraction of a year to plot() then the approach shown here will not work: you will need to pass the appropriate year + fraction of a year to xline() in that case.

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