[R] Multiple plot in a page

[Jim Lemon]

Hi Roslina,
You only specify space for two plots in:

par(mfrow=c(1,2))

However, you only try to plot two plots, so I will assume that you
only want two. You haven't defined "x" in the above code, which will
cause an error. The code below gives me two plots as I would expect (I
made up the data that you didn't supply).

par(mfrow=c(1,2))
stn_all<-matrix(400*rnorm(20)+4,ncol=2)
par(mar=c(4,4,2,1.2),oma=c(0,0,0,0),xaxs="i", yaxs="i")
hist(stn_all[,1],prob=TRUE, main ="Balok ",col="yellowgreen", cex.axis=1.2,
xlab="Rain (mm)", ylab="Relative frequency", ylim= c(0,.004),
xlim=c(0,1200))
x<-c(400,600,800,1000)
dgam1<-(rnorm(4)+4)/2000
lines(x, dgam1,col="red",lwd=3)
legend("topright", legend = c("observed","fitted"),
       col = c("yellowgreen", "red"), pch=c(15,NA), lty = c(0, 1),
       lwd=c(0,3),bty="n", pt.cex=2)
text(100,.012 , expression(paste(beta==64.64)))
box()

par(mar=c(4,4,2,1.2),oma=c(0,0,0,0),xaxs="i", yaxs="i")
hist(stn_all[,2],prob=TRUE, main ="Gambang ",col="yellowgreen",
cex.axis=1.2,
xlab="Rain (mm)", ylab="Relative frequency", ylim= c(0,.004),
xlim=c(0,1200))
dgam2<-(rnorm(4)+4)/2000
lines(x, dgam2,col="red",lwd=3)
legend("topright", legend = c("observed","fitted"),
       col = c("yellowgreen", "red"), pch=c(15,NA), lty = c(0, 1),
       lwd=c(0,3),bty="n", pt.cex=2)
text(100,.012 , expression(paste(beta==64.64)))
box()

Jim


On Wed, Aug 3, 2016 at 3:44 PM, roslinazairimah zakaria
<roslinaump at gmail.com> wrote:
> Dear r-users,
>
> I would like to plot 4 graphs arranged as 2 by 2 and follows are my codes.
> However, it only shows one graph.
>
> par(mfrow=c(1,2))
>
> par(mar=c(4,4,2,1.2),oma=c(0,0,0,0),xaxs="i", yaxs="i")  ## To control
> white space around and between the plots
> hist(stn_all[,1],prob=TRUE, main ="Balok ",col="yellowgreen", cex.axis=1.2,
> xlab="Rain (mm)", ylab="Relative frequency", ylim= c(0,.004),
> xlim=c(0,1200))
> lines(x, dgam1,col="red",lwd=3)
> legend("topright", legend = c("observed","fitted"),
>        col = c("yellowgreen", "red"), pch=c(15,NA), lty = c(0, 1),
>        lwd=c(0,3),bty="n", pt.cex=2)
> text(100,.012 , expression(paste(beta==64.64)))
> box()
>
> par(mar=c(4,4,2,1.2),oma=c(0,0,0,0),xaxs="i", yaxs="i")  ## To control
> white space around and between the plots
> hist(stn_all[,2],prob=TRUE, main ="Gambang ",col="yellowgreen",
> cex.axis=1.2,
> xlab="Rain (mm)", ylab="Relative frequency", ylim= c(0,.004),
> xlim=c(0,1200))
> lines(x, dgam2,col="red",lwd=3)
> legend("topright", legend = c("observed","fitted"),
>        col = c("yellowgreen", "red"), pch=c(15,NA), lty = c(0, 1),
>        lwd=c(0,3),bty="n", pt.cex=2)
> text(100,.012 , expression(paste(beta==64.64)))
> box()
>
>
> Thank you for your help.
>
> --
> *Dr. Roslinazairimah Binti Zakaria*
> *Tel: +609-5492370; Fax. No.+609-5492766*
>
> *Email: roslinazairimah at ump.edu.my <roslinazairimah at ump.edu.my>;
> roslinaump at gmail.com <roslinaump at gmail.com>*
> Deputy Dean (Academic & Student Affairs)
> Faculty of Industrial Sciences & Technology
> University Malaysia Pahang
> Lebuhraya Tun Razak, 26300 Gambang, Pahang, Malaysia
>
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