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ggplot2 - R Plot Bars are disappearing in grid.arrange/plot_grid

I have a problem with bars from my plots disappearing when I combine multiple plots.

Here is the code I′m using:

station<-c("Eins", "Zwei", "Drei","Vier")
x1<-c(200, 185, 165,180)
x2<-c(185,150,148,25)
x3<-c(156,125,141,36)

test.data<-data.frame(station,x1,x2,x3)


plot_sof<-ggplot(test.data, aes(x=station, y=x1))
plot_sof + geom_bar(stat="identity",na.rm=TRUE)

plot_sof_1<-ggplot(test.data, aes(x=station, y=x2))
plot_sof_1+geom_bar(stat = "identity",na.rm=TRUE)

plot_sof_2<-ggplot(test.data, aes(x=station, y=x3))
plot_sof_2+geom_bar(stat = "identity",na.rm=TRUE)

plot_grid(plot_sof, plot_sof_1, plot_sof_2, labels=c("x1", "x2", "x3"))

grid.arrange(plot_sof, plot_sof_1, plot_sof_2, ncol=1)```

Example of one of the plots which should combined

First try to combine the plots via grid.arrange, the bars are missing

Second try via plot_grid, here are the bars also missing

Does anyone know why the bars are missing and maybe know a solution or a workaround for that problem?


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1 Answer

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by (71.8m points)

Try with this, you have to assign the new geom to your objects:

#Code
plot_sof<-ggplot(test.data, aes(x=station, y=x1))
plot_sof <-plot_sof + geom_bar(stat="identity",na.rm=TRUE)

plot_sof_1<-ggplot(test.data, aes(x=station, y=x2))
plot_sof_1 <- plot_sof_1+geom_bar(stat = "identity",na.rm=TRUE)

plot_sof_2<-ggplot(test.data, aes(x=station, y=x3))
plot_sof_2 <- plot_sof_2+geom_bar(stat = "identity",na.rm=TRUE)

plot_grid(plot_sof, plot_sof_1, plot_sof_2, labels=c("x1", "x2", "x3"))

grid.arrange(plot_sof, plot_sof_1, plot_sof_2, ncol=1)

Outputs:

enter image description here

enter image description here


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