[R] Σχετ: Σχετ: plotting dates in x axis

[Maria Lathouri]

Dear Jim
Many thanks for this. I tried and it somehow worked. I removed the nlines=3 from your script so I can have the years in one line, but still the problem is that while trying to show all the years, there are years in the first line and then other years in a second line. 
I was wondering if I can show every two years instead. I think it would be much better.  
Many thanks. 
Kind regards,Maria

    Στις 11:56 π.μ. Τρίτη, 28 Φεβρουαρίου 2017, ο/η Maria Lathouri via R-help <r-help at r-project.org> έγραψε:
 

 Dear all,
Sorry about that. My mistake. Here is an example of my data
> head(aa)       SDATE  var11 1998-01-29 0.7282 1998-02-17 1.0803 1998-03-20 0.6374 1998-05-07 1.1205 1998-05-26 0.9036 1998-06-05 1.210.........................178 2012-10-4  0.71179 2012-11-4  0.663180 2012-12-10 0.484
I hope this helps.
Maria 

    Στις 10:00 μ.μ. Δευτέρα, 27 Φεβρουαρίου 2017, ο/η Jeff Newmiller <jdnewmil at dcn.davis.ca.us> έγραψε:
 

 While humorous, the term "Mexican Wall" is unlikely to be clear to the OP. This is a reference to the mailing list anti-virus strategy of cutting out attachments that don't meet a very restrictive set of requirements outlined in the Posting Guide that all R-users are supposed to have read and memorized, but which few even seem to know exists. You can best avoid the "Mexican Wall" by setting your email program to send plain text instead of HTML, and to embed your R code example (believe it or not, this is not the Excel-To-R translation service, so show us your R code and text data, not your Excel file) in the email along with your description of your problem. For more help on getting help search the Internet for "R reproducible example".
-- 
Sent from my phone. Please excuse my brevity.

On February 27, 2017 1:11:05 PM PST, Jim Lemon <drjimlemon at gmail.com> wrote:
>Hi Maria,
>First, Excel files don't make it through the Mexican Wall. A CSV with
>the extension changed to .txt might. You can get all of the years like
>this:
>
>aa<-data.frame(var1=runif(180),
> SDATE=paste(sample(1998:2012,180,TRUE),
> sample(1:12,180,TRUE),sample(1:28,180,TRUE),sep="-"))
>aa$sdate<-as.Date(aa$SDATE)
>plot(aa$sdate,aa$var1,xaxt="n")
>library(plotrix)
># set the tick marks at the middle of each year
>axis.dates<-as.Date(paste(1998:2012,6,30,sep="-"))
>staxlab(1,axis.dates,1998:2012,nlines=3)
>
>Obviously you don't want all of the months, so just add the months to
>the years:
>
>plot(aa$sdate,aa$var1,xaxt="n")
>staxlab(1,axis.dates,format(axis.dates,"%b/%Y"),nlines=3)
>
>Jim
>
>
>On Tue, Feb 28, 2017 at 2:26 AM, Maria Lathouri via R-help
><r-help at r-project.org> wrote:
>> Dear all,
>> I have an excel file of 180 observations with dates and one variable,
>from 1998 to 2012 by random months (there are some years that I might
>not have all the months or I might have two observations in one month).
>I am trying to plot the dates in x axis and the variable in y axis. I
>have already used as.Date for the dates so I can import them into R.
>> Here is my script:> aa<-read.csv("aa.csv")> attach(aa)>
>names(aa)#"SDATE" "var1"
>> I convert the dates into R: > sdate<-as.Date(SDATE,
>format="%Y-%m-%d")
>>
>> I am plotting the dates with my var1:> plot(sdate, var1, type="l")
>> Up to now, everything seems ok. However, in the x-axis I only get
>three years, 2000, 2005 and 2010. As I want to show all the years or at
>least as many as it could be, I am using the following:
>>> plot(sdate, var1, type="l", xaxt="n")
>>
>>> d1<-c((sdate[1]), (sdate[183]))> d2<-as.Date((d1[1])+365*(0:15))
>>> axis(side=1, at=0:15, labels=strftime(d2, format="%Y"),
>cex.axis=0.8,las=2);  I tried also to plot the dates in a month-Year
>form:
>>
>>> d2<-as.Date((d1[1])+150*(0:20))
>>> plot(sdate, var1, type="l", xaxt="n")> axis(side=1, at=0:15,
>labels=strftime(d2, format="%m-%Y"), cex.axis=0.8,las=2)
>>
>> But nothing happened. I cannot understand why it doesn't show
>anything.
>> I have attached the file as well in case you want to have a more
>clear picture.
>> I really appreciate it if you can help me on this.
>> Thank you very much in advance.
>> Kind regards,Maria
>> ______________________________________________
>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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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.
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.

  
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______________________________________________
R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.

   
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