Re: [R] matplot help

From: Michael Rennie <mdrennie_at_gmail.com>
Date: Thu, 10 Jul 2008 09:34:59 -0400

I think the problem is that you are trying to plot non-numeric values on your x. I built some test code around your example; I don't think you can plot non-numeric characters. If the plot is working on your end, it's likely because it's recognizing your X variable as a factor and it's plotting the numeric equivalents of the ordered factor. I think all you need to do is just call the plot without an x-axis and then make your own:

########################

x<-c("a","b","c","d")
y<-c(25,26,27,28)

matplot(1:4, y, type="l",lty=1, col=2, ylab="Bil.$",xlab="Quarters w/ Q1.60 = 0", xaxt="n")
title(main="(Log Diff) Gross Domestic Product (SAAR)", cex=0.5) axis(1, at=1:4, labels=x)

########################

Instead of "x" in axis() above, you can specify levels(x) and I think that should work, too.

see ?axis for details.

HTH, Mike

On Thu, Jul 10, 2008 at 9:08 AM, Boyce, Morgan <mkboyce1_at_uncc.edu> wrote:
>
>
> .DESC Checkable Deposits & Currency (Bil.$) Assets: Time and Savings Deposits (Bil.$)
> Q1-60 26.528 1.268
> Q2-60 27.535 1.087
> Q3-60 27.737 1.346
> Q4-60 28.243 3
> Q1-61 26.462 3.272
> Q2-61 27.769 3.863
> Q3-61 27.903 4.606
> Q4-61 31.673 4.1
> Q1-62 28.211 5.395
> Q2-62 29.469 5.554
> Q3-62 30.249 4.903
>
> Mike,
>
> Is there a way to have the .DESC vector as the values on the X-axis? I tried 'xlim' but it didn't recognize Q1-60, Q3-62.
>
> Using 'xaxp' it appears that it can not handle non-numeric arguments? Am I missing something?
>
> Thanks again,
>
> Morgan
> ________________________________
> From: Michael Rennie [mailto:mdrennie_at_gmail.com]
> Sent: Thu 7/10/2008 12:27 AM
> To: Boyce, Morgan
> Subject: Re: [R] matplot help
>
> I'm not entirely sure what the issue is given that you haven't supplied any data with the sample code. If you just want to limit your x axis, try
>
> 'xlim=c(xmin,xmax)'
>
> as an argument in xplot.
>
> If you want to control where your tick marks (and therefore labels) go, try
>
> xaxp
>
> ?par will give you the details.
>
> Mike
>
> On Wed, Jul 9, 2008 at 4:26 PM, Boyce, Morgan <mkboyce1_at_uncc.edu> wrote:
>>
>> Hi,
>>
>> My question is how do I gain control over what values the X and Y axis show. Below is a sample plot I have made and want the X axis to represent a time vector with values taking the form Q1.60, Q2.60, Q3.60...Q1.90..etc...Currently the X axis starts with value 0 and increases by 1 through the end of the sample.
>>
>>
>> win.graph()
>> matplot(v.0,log.diff.v.6,type="l",lty=1, col=2, ylab="Bil.$",xlab="Quarters w/ Q1.60 = 0")
>> title(main="(Log Diff) Gross Domestic Product (SAAR)", cex=0.5)
>>
>> Any advice is greatly appreciated!
>>
>> Morgan
>>
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help_at_r-project.org mailing list
>> 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.
>
>
>
> --
> --
> Michael D. Rennie
> Ph.D. Candidate
> University of Toronto at Mississauga
> 3359 Missisagua Rd. N.
> Mississauga, ON L5L 1C6
> Ph: 905-828-5452 Fax: 905-828-3792
> www.utm.utoronto.ca/~w3rennie

--
--
Michael D. Rennie
Ph.D. Candidate
University of Toronto at Mississauga
3359 Missisagua Rd. N.
Mississauga, ON L5L 1C6
Ph: 905-828-5452 Fax: 905-828-3792
www.utm.utoronto.ca/~w3rennie

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