[R-sig-Geo] How do i plot a graph with x axis vertically labelled?

[Christopher W Ryan]

Vasana--

May I ask why you want to produce such a graph? What relationship(s) in
your data are you trying to show?  I can't be sure from your original post,
but it seems to me that you are trying to do this the hard way.  R can help
you.

What happens when you run the code you posted? What error message do you
get, if any?

Your birthdates are not just nominal labels; they contain more information
than that--specifically, they are ordered, with certain elapsed duration
between them. Using them merely as names/labels on bars sacrifices
information. Also, if you don't have an observation for every birthdate in
a sequence of dates, then you will represent unequally-spaced dates with
equally-spaced bars--generally not a good thing. Conversely, could any of
your birthdates ever be duplicated?

Vertically-oriented bar labels can be difficult for your intended audience
to read, especially since you seem to want to put 30-40 of them along the
horizontal axis. Another option would be to flip your graph, putting
birthdates on the vertical axis so the date labels can be horizontal.

Here is a minimal working example to demonstrate one possible solution that
you might be able to modify to convey what you are trying to convey, and
that let's R do the work it is good at.

## generate some data
dd <- data.frame( birth = Sys.Date() + sort(sample(1:10, 6, replace =
TRUE)),  sex = factor(sample(c("M", "F"), 6, replace = TRUE)), age =
sample(1:9, 6, replace = TRUE) )
## show the data
dd
str(dd)
## a plot
 with(dd, plot(age ~ birth, type = "h"))

--Chris Ryan

On Mon, Aug 13, 2018 at 6:24 AM, Vasana Tutjavi via R-sig-Geo <
r-sig-geo using r-project.org> wrote:

> Dear R-sig-geo experts,
>
> I want to plot a bar graph with the labels on the x axis in a vertical
> format. The data is the Ages of Squid (on the Y axis) and the date of Birth
> on the X axis, I am struggling to change the labels on the x axis to a
> vertical format and I want all the dates to show at all the bars. My data
> is as follows:
> Birth
> Sex
> Age
> 25/08/2004
> F
> 2
> 26/09/2004
> F
> 3
> 02/11/2004
> F
> 3
> 11/11/2004
> F
> 1
> 22/11/2004
> F
> 3
> 04/12/2004
> F
> 1
> 08/12/2004
> F
> 4
> 15/12/2004
> F
> 4
> 21/12/2004
> F
> 5
> 24/12/2004
> F
> 1
> 04/01/2005
> F
> 1
> 06/01/2005
> F
> 3
> 13/01/2005
> F
> 2
> 18/01/2005
> F
> 1
> 19/01/2005
> F
> 3
> 09/02/2005
> F
> 2
> 11/02/2005
> F
> 1
> 13/02/2005
> F
> 1
> 17/02/2005
> F
> 1
> 18/02/2005
> F
> 8
> 19/02/2005
> F
> 5
> 24/02/2005
> F
> 1
> 28/02/2005
> F
> 42
> 01/03/2005
> F
> 1
> 07/03/2005
> F
> 1
> 08/03/2005
> F
> 2
> 09/03/2005
> F
> 1
> 14/03/2005
> F
> 7
> 16/03/2005
> F
> 1
> 25/03/2005
> F
> 3
> 01/04/2005
> F
> 1
> 06/04/2005
> F
> 5
> 07/04/2005
> F
> 1
> 08/04/2005
> F
> 1
> 13/04/2005
> F
> 1
> 14/04/2005
> F
> 1
> 27/04/2005
> F
> 1
> 01/05/2005
> F
> 2
> 07/05/2005
> F
> 1
> 08/05/2005
> F
> 2
> 16/05/2005
> F
> 1
> 30/05/2005
> F
> 8
> 06/06/2005
> F
> 1
> Here is the script I tried:
>
> barplot(Females2005$Age,  names.arg = c("25/08/2004", "26/09/2004",
> "02/11/2004", "11/11/2004", "22/11/2004", "04/12/2004", "08/12/2004",
>                                        "15/12/2004", "21/12/2004",
> "24/12/2004", "04/01/2005", "06/01/2005", "13/01/2005", "18/01/2005",
>                                        "19/01/2005", "09/02/2005",
> "11/02/2005", "13/02/2005", "17/02/2005", "18/02/2005", "19/02/2005",
>                                       "24/02/2005", "28/02/2005",
> "01/03/2005", "07/03/2005", "08/03/2005", "09/03/2005", "14/03/2005",
>                                     "16/03/2005", "25/03/2005",
> "01/04/2005", "06/04/2005", "07/04/2005", "08/04/2005", "13/04/2005",
>                                       "14/04/2005", "27/04/2005",
> "01/05/2005", "07/05/2005", "08/05/2005", "16/05/2005", "30/05/2005",
>                                     "06/06/2005"), main = 'Females 2005',
> ylab = 'Age/Days', xlab = 'Birth/Hatch date')
>
> Many thanks
> Vasana
> Sent from Mail for Windows 10
>
>
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>
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