Hi all,
I have a question, that might be a ?rookie? question ? but I?m trying now for
days and cannot get my head around. The general question is:
How can I plot a stepped line chart with multiple lines from a subset of a
dataframe?
An example:
d <- matrix(rep(0,24), ncol=3, nrow=8)
d <- as.data.frame(d)
d$V1 <-
c("A","A","A","B","B","C","C","C")
d$V2 <- c(5,10,15,10,15,5,13,15)
d$V3 <- c(10,20,30,7.5,10,3,7,10)
which gives me the following dataframe:
V1 V2 V3
1 A 5 10.0
2 A 10 20.0
3 A 15 30.0
4 B 10 7.5
5 B 15 10.0
6 C 5 3.0
7 C 13 7.0
8 C 15 10.0
I now want to plot three stepped lines into a x-y chart, the lines representing
A, B, C. The x-axis is given by V2, the y-axis by V3, thus each line will be
?ascending?
It must be something with SUBSET or so, but I do not find an easy way.
Can anybody help me?
Thanks
Stephan
Hi, This is R, so there are bound to be severay ways to do it. This would be my first choice: library(ggplot2) ggplot(d, aes(x=V2, y=V3, color=V1)) + geom_step() Best, Ista On Tue, Feb 22, 2011 at 3:08 PM, Techni X <fibosworld at yahoo.com> wrote:> Hi all, > > I have a question, that might be a ?rookie? question ? but I?m trying now for days and cannot get my head around. The general question is: > How can I plot a stepped line chart with multiple lines from a subset of a dataframe? > > An example: > d <- matrix(rep(0,24), ncol=3, nrow=8) > d <- as.data.frame(d) > d$V1 <- c("A","A","A","B","B","C","C","C") > d$V2 <- c(5,10,15,10,15,5,13,15) > d$V3 <- c(10,20,30,7.5,10,3,7,10) > which gives me the following dataframe: > ?V1 V2 ? V3 > 1 ?A ?5 10.0 > 2 ?A 10 20.0 > 3 ?A 15 30.0 > 4 ?B 10 ?7.5 > 5 ?B 15 10.0 > 6 ?C ?5 ?3.0 > 7 ?C 13 ?7.0 > 8 ?C 15 10.0 > > I now want to plot three stepped lines into a x-y chart, the lines representing A, B, C. The x-axis is given by V2, the y-axis by V3, thus each line will be ?ascending? > It must be something with SUBSET or so, but I do not find an easy way. > > Can anybody help me? > > Thanks > Stephan > > > > > ______________________________________________ > 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. >-- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org
On Feb 22, 2011, at 7:10 PM, Ista Zahn wrote:> Hi, > This is R, so there are bound to be severay ways to do it. This would > be my first choice: > > library(ggplot2) > ggplot(d, aes(x=V2, y=V3, color=V1)) + geom_step() > > Best, > Ista > > On Tue, Feb 22, 2011 at 3:08 PM, Techni X <fibosworld at yahoo.com> > wrote: >> Hi all, >> >> I have a question, that might be a ?rookie? question ? but I?m >> trying now for days and cannot get my head around. The general >> question is: >> How can I plot a stepped line chart with multiple lines from a >> subset of a dataframe? >> >> An example: >> d <- matrix(rep(0,24), ncol=3, nrow=8) >> d <- as.data.frame(d) >> d$V1 <- c("A","A","A","B","B","C","C","C") >> d$V2 <- c(5,10,15,10,15,5,13,15) >> d$V3 <- c(10,20,30,7.5,10,3,7,10)Probably the second to these: require(lattice) xyplot(V3 ~ V2|V1, data=d, type="s") #separate panels xyplot(V3 ~ V2, group=V1, data=d, type="s") # all on one panel>> which gives me the following dataframe: >> V1 V2 V3 >> 1 A 5 10.0 >> 2 A 10 20.0 >> 3 A 15 30.0 >> 4 B 10 7.5 >> 5 B 15 10.0 >> 6 C 5 3.0 >> 7 C 13 7.0 >> 8 C 15 10.0 >> >> I now want to plot three stepped lines into a x-y chart, the lines >> representing A, B, C. The x-axis is given by V2, the y-axis by V3, >> thus each line will be ?ascending? >> It must be something with SUBSET or so, but I do not find an easy >> way. >> >> Can anybody help me? >> >> Thanks >> StephanDavid Winsemius, MD West Hartford, CT
Hi Ista, David, your answers indeed helped me to solve the problem! So thanks to you and have a good day! Stephan --- On Wed, 2/23/11, David Winsemius <dwinsemius at comcast.net> wrote:> From: David Winsemius <dwinsemius at comcast.net> > Subject: Re: [R] Plot Stepped Line chart with multiple lines > To: "Ista Zahn" <izahn at psych.rochester.edu> > Cc: "Techni X" <fibosworld at yahoo.com>, r-help at r-project.org > Date: Wednesday, February 23, 2011, 2:08 AM > > On Feb 22, 2011, at 7:10 PM, Ista Zahn wrote: > > > Hi, > > This is R, so there are bound to be severay ways to do > it. This would > > be my first choice: > > > > library(ggplot2) > > ggplot(d, aes(x=V2, y=V3, color=V1)) + geom_step() > > > > Best, > > Ista > > > > On Tue, Feb 22, 2011 at 3:08 PM, Techni X <fibosworld at yahoo.com> > wrote: > >> Hi all, > >> > >> I have a question, that might be a ?rookie? > question ? but I?m trying now for days and cannot get my > head around. The general question is: > >> How can I plot a stepped line chart with multiple > lines from a subset of a dataframe? > >> > >> An example: > >> d <- matrix(rep(0,24), ncol=3, nrow=8) > >> d <- as.data.frame(d) > >> d$V1 <- c("A","A","A","B","B","C","C","C") > >> d$V2 <- c(5,10,15,10,15,5,13,15) > >> d$V3 <- c(10,20,30,7.5,10,3,7,10) > > Probably the second to these: > > require(lattice) > xyplot(V3 ~ V2|V1, data=d, type="s")? #separate > panels > xyplot(V3 ~ V2, group=V1, data=d, type="s")? # all on > one panel > > >> which gives me the following dataframe: > >>? V1 V2???V3 > >> 1? A? 5 10.0 > >> 2? A 10 20.0 > >> 3? A 15 30.0 > >> 4? B 10? 7.5 > >> 5? B 15 10.0 > >> 6? C? 5? 3.0 > >> 7? C 13? 7.0 > >> 8? C 15 10.0 > >> > >> I now want to plot three stepped lines into a x-y > chart, the lines representing A, B, C. The x-axis is given > by V2, the y-axis by V3, thus each line will be > ?ascending? > >> It must be something with SUBSET or so, but I do > not find an easy way. > >> > >> Can anybody help me? > >> > >> Thanks > >> Stephan > > > David Winsemius, MD > West Hartford, CT > >