Dear Sebastien,
You are looking for geom_polygon().
Best regards,
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium
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more than asking him to perform a post-mortem examination: he may be
able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does
not ensure that a reasonable answer can be extracted from a given body
of data. ~ John Tukey
2015-10-21 11:20 GMT+02:00 sbihorel
<sebastien.biho...@cognigencorp.com
<mailto:sebastien.biho...@cognigencorp.com>>:
Hi
I would like to use ggplot2 to create a 2d plot showing a series
of shaded areas that are not continuous with respect to the x-axis
variable. The expected result is illustrated below using
lattice/grid functions.
-------------
pdata <- data.frame(
x=c(1,2,2,1,NA,3,4,4,3,NA,5,6,6,5),
y=c(3,3,2,2,NA,2,2,1,1,NA,2.5,3,2,2))
lattice::xyplot((1:6)~(1:6),panel=function(pdata=pdata){
grid::grid.polygon(pdata$x,pdata$y,
default.units='native',
gp=grid::gpar(fill=1,col=NULL,lty=0))
},pdata=pdata)
-------------
Here is my attempt to reproduce this plot in ggplot.
-------------
library(ggplot2)
data <- data.frame(
x=c(1,2,NA,3,4,NA,5,6),
ymin=c(2,2,NA,1,1,NA,2,2),
ymax=c(3,3,NA,2,2,NA,2.5,3)
)
ggplot(data,aes(x=x))+geom_ribbon(aes(ymin=ymin,ymax=ymax))
-------------
Obviously, either geom_ribbon expects continuity in the data or I
need to setup my data and/or call differently...
Thanks for your help
Sebastien
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