Dear R users,
I have a dataframe with 6 columns and I want to create a plot (with for
loop). My question is how to add points in the for loop? I tried this code,
but without success.
vv<-rbind(colnames(ext))
for(i in 1:ncol(vv)){
with(ext, plot(rownames(ext), ext[,i], type="p",las=1,
bty="n",cex.main=2, cex.axis=1.5))
}
Please help me to solve that!
Best regards!
CR
--
-
-
Catalin-Constantin ROIBU
?
Lecturer PhD, Forestry engineer
Forestry Faculty of Suceava
Str. Universitatii no. 13, Suceava, 720229, Romania
office phone +4 0230 52 29 78, ext. 531
mobile phone +4 0745 53 18 01
FAX: +4 0230 52 16 64
silvic.usv.ro <http://www.usv.ro/>
[[alternative HTML version deleted]]
On 23/03/2016 5:36 AM, catalin roibu wrote:> Dear R users, > > I have a dataframe with 6 columns and I want to create a plot (with for > loop). My question is how to add points in the for loop? I tried this code, > but without success. > > vv<-rbind(colnames(ext)) > for(i in 1:ncol(vv)){ > with(ext, plot(rownames(ext), ext[,i], type="p",las=1, > bty="n",cex.main=2, cex.axis=1.5)) > } > > Please help me to solve that!You can call the points() function to add points to an existing plot. The main difficulty is that the initial call to plot() establishes the axes and coordinate system; if later points fall outside the plot area, they won't be shown. So you may need to work out xlim and ylim in advance. Duncan Murdoch
Martin Maechler
2016-Mar-23 11:29 UTC
[R] adding points in plot loop --> try using matplot() !
>>>>> Duncan Murdoch <murdoch.duncan at gmail.com> >>>>> on Wed, 23 Mar 2016 05:55:43 -0400 writes:> On 23/03/2016 5:36 AM, catalin roibu wrote: >> Dear R users, >> >> I have a dataframe with 6 columns and I want to create a plot (with for >> loop). My question is how to add points in the for loop? I tried this code, >> but without success. >> >> vv<-rbind(colnames(ext)) >> for(i in 1:ncol(vv)){ >> with(ext, plot(rownames(ext), ext[,i], type="p",las=1, >> bty="n",cex.main=2, cex.axis=1.5)) >> } >> >> Please help me to solve that! > You can call the points() function to add points to an existing plot. > The main difficulty is that the initial call to plot() establishes the > axes and coordinate system; if later points fall outside the plot area, > they won't be shown. So you may need to work out xlim and ylim in advance. Indeed! ... and that's why R has inherited the matplot() / matlines() utility functions from S for about 20 years now. These do plot all the columns of a numeric matrix and solve the xlim/ylim problem for you. As the above R code is not reproducible (we do not have your 'ext'), I have not tried if your use of "rownames"/"colnames" is easily portable to matplot. If not (which I doubt), just take matplot() as a template to writer your own function. BTW: Your usage of with(.) seems entirely unnecessary .. Martin Maechler
Hi Anothar approach is to reshape your ext data frame As you did not show your data I use my own.> dput(mikro)structure(list(cas = c(0L, 2L, 3L, 5L, 6L, 8L, 9L, 10L, 12L, 17L, 23L), zr = c(0.19, 0.115, 0.073, 0.068, 0.052, 0.055, 0.048, 0.047, 0.047, 0.045, 0.045), zrred = c(0.145, 0.07, 0.028, 0.023, 0.007, 0.01, 0.003, 0.002, 0.002, 0, 0), drt = c(0.397260273972603, 0.191780821917808, 0.0767123287671233, 0.063013698630137, 0.0191780821917808, 0.0273972602739726, 0.00821917808219179, 0.00547945205479452, 0.00547945205479452, 0, 0), drtf = c(0, 0.589041095890411, 0.723287671232877, 0.863013698630137, 0.904109589041096, 0.950684931506849, 0.968493150684931, 0.975342465753425, 0.986301369863014, 1, 1)), .Names = c("cas", "zr", "zrred", "drt", "drtf"), row.names = c(NA, -11L), class = "data.frame")>library(reshape2) mikro.m<-melt(mikro, id.vars="cas") plot(mikro.m$cas, mikro.m$value, type="n") points(mikro.m$cas, mikro.m$value, pch=as.numeric(mikro.m$variable)) Or you can use ggplot. Cheers Petr> -----Original Message----- > From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of catalin > roibu > Sent: Wednesday, March 23, 2016 10:37 AM > To: R Project Help > Subject: [R] adding points in plot loop > > Dear R users, > > I have a dataframe with 6 columns and I want to create a plot (with for > loop). My question is how to add points in the for loop? I tried this > code, but without success. > > vv<-rbind(colnames(ext)) > for(i in 1:ncol(vv)){ > with(ext, plot(rownames(ext), ext[,i], type="p",las=1, > bty="n",cex.main=2, cex.axis=1.5)) } > > Please help me to solve that! > > Best regards! > > CR > > > -- > > - > - > Catalin-Constantin ROIBU > ? > Lecturer PhD, Forestry engineer > Forestry Faculty of Suceava > Str. Universitatii no. 13, Suceava, 720229, Romania > office phone +4 0230 52 29 78, ext. 531 > mobile phone +4 0745 53 18 01 > FAX: +4 0230 52 16 64 > silvic.usv.ro <http://www.usv.ro/> > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.________________________________ Tento e-mail a jak?koliv k n?mu p?ipojen? dokumenty jsou d?v?rn? a jsou ur?eny pouze jeho adres?t?m. Jestli?e jste obdr?el(a) tento e-mail omylem, informujte laskav? neprodlen? jeho odes?latele. Obsah tohoto emailu i s p??lohami a jeho kopie vyma?te ze sv?ho syst?mu. Nejste-li zam??len?m adres?tem tohoto emailu, nejste opr?vn?ni tento email jakkoliv u??vat, roz?i?ovat, kop?rovat ?i zve?ej?ovat. 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