A blank plot is producted with plot

[SficPan]

When I run:
graph1 <- ggplot(a4,mapping = aes(Day,x_value,colour=factor(patient)))+
geom_line()+
guides(color=guide_legend(title = "Patient"))+
scale_y_break(c(0.3,0.75), scales = 1.5)+
scale_y_break(c(1.55,2.75), scales = 1.5)
The variable graph1 is included with two plots with one blank. I don't know how to separate it from graph1 so it may cause some inconvenience in Rmarkdown.

[GuangchuangYu]

try

print(graph1)

in Rmarkdown code trunk.

[SficPan]

it doesn't work...

[GuangchuangYu]

We can't reproduce your issue.

You can check the vignette of ggbreak, https://cran.r-project.org/web/packages/ggbreak/vignettes/ggbreak.html, which was generated by Rmarkdown file and it works fine.

[jayoung]

@SficPan I experienced this too, but after I 'knit' the Rmd doc the blank plot is not visible at all. From my perspective that means I don't really care about it - it's mildly annoying, but I can live with it.

@GuangchuangYu - I think @SficPan meant that within the Rstudio window, when you run a code chunk, you see two thumbnail plots - the blank plot, and then the plot we care about. Only the good plot appears when rendering the Rmd (I tried html and github_document).

Here is a screen shot. The thumbnails are right below the code chunk. I'll put the actual code in a separate comment

[jayoung]

---
title: "ggbreaks"
output: html_document
---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = TRUE)
```

```{r}
library(ggplot2)
library(ggbreak)
library(patchwork)
```

```{r}
set.seed(2019-01-19)
d <- data.frame(x = 1:20,
y = c(rnorm(5) + 4, rnorm(5) + 20, rnorm(5) + 5, rnorm(5) + 22)
)

p1 <- ggplot(d, aes(y, x)) + geom_col(orientation="y")
d2 <- data.frame(x = c(2, 18), y = c(7, 26), label = c("hello", "world"))
p2 <- p1 + scale_x_break(c(7, 17)) +
geom_text(aes(y, x, label=label), data=d2, hjust=1, colour = 'firebrick') +
xlab(NULL) + ylab(NULL) + theme_minimal()

p1 + p2
```