From: Ista Zahn <istazahn_at_gmail.com>

Date: Sat, 24 May 2008 13:07:22 -0400

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. Received on Sat 24 May 2008 - 17:41:25 GMT

Date: Sat, 24 May 2008 13:07:22 -0400

*>
**>
**> From: "Jason Lee" <huajie.lee_at_gmail.com>
**> Date: May 23, 2008 10:06:18 AM EDT
**> To: r-help_at_r-project.org
**> Subject: [R] Fwd: Advise in R- plotting graphs
**>
**>
**> Hi
**>
*

> I tried and it is not what im looking ..

*>
**> I basically issue plot(data$"V1",data$"V2") as the matrix have the two
**> headers..But essentially what I would like is relabel or somehow
**> differentiate row 5 from the rest of the points on the graph.
*

If I understand correctly what you want the code provided by Jim
Holtman works provided you omit the " type = "l" " part. If you
convert the matrix to a data frame you can use the ggplot2 package to
do this kind of thing very flexibly (see code below)

*>
**>
*

> In other words, I wanted to see all the points but at the same time

*> see the
**> particular point (row 5 in this case) on the graph as another point
**> of color
**> in the graph.
**>
**> Please advise.
**>
**> Thanks.,
**>
**>
**>
**> On Fri, May 23, 2008 at 11:00 PM, jim holtman <jholtman_at_gmail.com>
**> wrote:
**>
**>> try this:
**>>
**>> x <- matrix(runif(15, 100, 300), ncol=3)
**>> plot(x[,1], x[,2], type='l')
**>> points(x[5,1], x[5,2], pch=17, cex=3, col='red') # plot point #5
*

#Alternative solution using ggplot2#

x2 <- data.frame(x)

x2$factor <- factor(c(1,1,1,1,2))

library(ggplot2)

qplot(X1,X2, data=x2, colour=factor)

*>>
**>>
*

>> On Fri, May 23, 2008 at 8:50 AM, Jason Lee <huajie.lee@gmail.com>

*>> wrote:
**>>
**>>> Hi
**>>>
**>>> I have a data table matrix,"data" which looks like below:-
**>>> V1 V2 V3
**>>> 1 -6382.719 -1096.554 6998994
**>>> 2 -some values-
**>>> 3 -some values-
**>>> 4 -some values-
**>>> 5 -some values-
**>>>
**>>> Querying dim of "data" gives me 3 columns and 5 rows.
**>>>
**>>> And currently I want to plot "V1" against "V2" with the condition
**>>> that I
**>>> want to mark(color) the point(row 5) on the graph. This is so i
**>>> could see
**>>> some triangle shape thing on the graph for row 5.
**>>>
**>>> I couldnt recall how I could use repo() to change the line 5 to
**>>> some value
**>>> to differentiate with others. And then using PCH for the color.
**>>>
**>>> Please advise. Thanks.
**>>>
**>>> -jason
**>>>
**>>> [[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<http://www.r-project.org/posting-guide.html
**>>> >
**>>> and provide commented, minimal, self-contained, reproducible code
*

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