R help - Mar 2023 - Shaded area

Dear R users,

I have an xlsx file (attached to this mail) that shows the values of a
"der" series observed on a daily basis from January 1, 2017 to January
25,
2017. This series is strictly positive during two periods: from January 8,
2017 to January 11, 2017 and from January 16, 2017 to January 20, 2017. I
would like to plot the series with two shaded areas corresponding to the
positivity of the series. Specifically, I would like to draw 4 vertical
lines intersecting the x-axis in the 4 dates mentioned above and shade the
two areas of positivity. Thanks for your help.

Hallo

Excel attachment is not allowed here, but shading area is answered many times
elsewhere. Use something like . "shading area r" in google.

See eg.
https://www.geeksforgeeks.org/how-to-shade-a-graph-in-r/

Cheers Petr

-----Original Message-----
From: R-help <r-help-bounces at r-project.org> On Behalf Of George Brida
Sent: Wednesday, March 1, 2023 3:21 PM
To: r-help at r-project.org
Subject: [R] Shaded area

Dear R users,

I have an xlsx file (attached to this mail) that shows the values of a
"der" series observed on a daily basis from January 1, 2017 to January
25, 2017. This series is strictly positive during two periods: from January 8,
2017 to January 11, 2017 and from January 16, 2017 to January 20, 2017. I would
like to plot the series with two shaded areas corresponding to the positivity of
the series. Specifically, I would like to draw 4 vertical lines intersecting the
x-axis in the 4 dates mentioned above and shade the two areas of positivity.
Thanks for your help.
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