Message-ID: <395FAD3E-05AE-47F5-9D22-F4DFFA088821@comcast.net>
Date: 2011-08-09T15:32:41Z
From: David Winsemius
Subject: monthly boxplot
In-Reply-To: <CAFOioqtr-NRLxSdYTYD2YWen+as4B6cw4P1NoUAR7bBD4DynKQ@mail.gmail.com>
On Aug 9, 2011, at 10:17 AM, Fernando Andreacci wrote:
> It worked, thanks.
>
> Is there a way to put a trend line through the boxplots?
You have not shown us how you set the data up or made the boxplots. A
"trend line through boxplots" seems be a bit ambiguous, since the x-
variable needs to be a factor and a factor variable would not
necessarily have either a scale or an order. So the answer with the
available information cannot be anymore specific than "it depends".
--
David.
>
>
> On Tue, Aug 9, 2011 at 10:58 AM, David Winsemius <dwinsemius at comcast.net
> >wrote:
>
>>
>> On Aug 9, 2011, at 9:46 AM, Fernando Andreacci wrote:
>>
>> I'm trying to make a monthly boxplot using this:
>>>
>>> boxplot(varmeasure ~ vardates)
>>>
>>> vardates = [1] 10/1/2010 10/1/2010 10/1/2010 10/1/2010 10/1/2010
>>> 10/1/2010
>>> 10/1/2010
>>> [8] 10/1/2010 10/1/2010 11/1/2010 11/1/2010 11/1/2010 11/1/2010
>>> 11/1/2010
>>> ....
>>>
>>> varmeasure = [1] 0.0 26.0 0.2 -0.2 -1.2 -0.8 0.0 4.4
>>> -0.6
>>> -0.2 14.4 -0.2
>>> [13] 4.8 4.0 2.8 3.2 3.8 3.2 -11.4 0.2 0.4 3.0
>>> 0.6
>>> 6.2
>>> ....
>>>
>>>
>>> they have same size.
>>>
>>>
>>> My problem is that R is ploting ordered by months and not by year
>>> and by
>>> months
>>>
>>> I'm getting 1/1/2011, 10/1/2010, 11/1/2010, 2/1/2011
>>>
>>> How can I plot it in chronological order?
>>>
>>
>> By converting those character strings to dates. At the moment you
>> seem to
>> believe that R has the ability to "know" that you want these
>> strings to be
>> dates.
>>
>> ?as.Date
>> ?Dates
>>
>> --
>>
>> David Winsemius, MD
>> West Hartford, CT
>>
>>
>
>
> --
> Fernando Andreacci
> Bi?logo
> Fone +55 47 9921 4015
> +55 41 9921 3934
> fandreacci at gmail.com
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius, MD
West Hartford, CT