add vertical lines using xline

Hi,

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

Answer 1

[Star Strider]

It would helpo to understand what the dates are in the posted code.

figure
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.

.

[Walter Roberson]

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.