[R] [FORGED] Re: bar plot add space to group data

[Peter Langfelder]

My guess is that space has no effect because (1) the first element is
zero and (2) the code in OP's message has
barplot(gceac[,3], ...

i.e. barplot does not see a matrix, only a vector.

To the OP, try formatting the data to be plotted as a matrix, not as a
vector, then the space argument should be useful to add space between
groups.

Peter


On Sat, Aug 18, 2018 at 4:53 PM Rolf Turner <r.turner using auckland.ac.nz> wrote:
>
>
> Jim:
>
> (a) There's no legend.
>
> (b) I am still curious as to why the OP's code didn't work, in that
> the "space=c(0,2)" argument seemed to have no effect.
>
> cheers,
>
> Rolf
>
> On 18/08/18 20:45, Jim Lemon wrote:
> > Hi citc,
> > Try this:
> >
> > geac<-matrix(c(9,9,8,8,8,23,23,23,23,22,27,27,27,25,24,
> >   19,19,19,20,20,17,17,17,18,19,8,8,8,9,9,2,2,3,3,3),ncol=5,byrow=TRUE)
> > library(plotrix)
> > barp(geac,names.arg=2014:2018,main="A level grades chemistry",
> >   xlab="Year",ylab="Percentage of each grade",ylim=c(0,30),
> >   col=c("white","lightblue","blue","orange","green","red","pink"))
> >
> > Jim
> >
> > On Fri, Aug 17, 2018 at 9:55 PM,  <citc using disroot.org> wrote:
> >> R-users,
> >>
> >> Can someone please advise how to improve the code below that was used to produce the graph shown at the following hyperlink (https://chemistryinthecity.neocities.org/content/entry1808.html#17)? The request is to add space between the annual data groups.
> >>
> >> barplot(gceac[,3], xlab='year', ylab='percentage of each grade', col=c('aliceblue', 'aquamarine', 'blue', 'chocolate', 'darkgreen', 'firebrick', 'violet'), legend=gceac[1:7,2], args.legend = list(x = 40, y = 30, title='grades'), main='A-level grades, chemistry', beside=T, space=c(0,2), ylim=c(0,30))
> >> years<-c(2014,2015,2016,2017,2018)
> >> mtext(years, side=1, at=c(5, 12, 19, 26, 33))
> >> R-users, Can someone please advise how to improve the code below that was used to produce the graph shown at the following hyperlink (https://chemistryinthecity.neocities.org/content/entry1808.html#17)? The request is to add space between the annual data groups.  barplot(gceac[,3], xlab='year', ylab='percentage of each grade', col=c('aliceblue', 'aquamarine', 'blue', 'chocolate', 'darkgreen', 'firebrick', 'violet'), legend=gceac[1:7,2], args.legend = list(x = 40, y = 30, title='grades'), main='A-level grades, chemistry', beside=T, space=c(0,2), ylim=c(0,30)) years<-c(2014,2015,2016,2017,2018) mtext(years, side=1, at=c(5, 12, 19, 26, 33))
>
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