问题
I have got the following problem: When I plot anything with ggplot2 like this
# Libraries
library(ggplot2)
# create data
xValue <- 1:10
yValue <- cumsum(rnorm(10))
data <- data.frame(xValue,yValue)
# Plot
ggplot(data, aes(x=xValue, y=yValue)) +
geom_line()
The resulting graph looks like this where the text is shown in weir unicode blocks:
ggplot2 graph with text issue
These unicode blocks look like boxes with four numbers starting with two 0s like:
# Example block
----
|00|
|2C|
----
I already tried to update and reinstall the tidyverse package, I reopened R-Studio and only called the library ggplot2 in order to have no conflicting packages open, I could not find any similar issue on the internet whatsoever. I hope you can help me out and please do not hesitate if you need further information from me.
R version: 3.6.1 (2019-07-05)
platform: linux mint x86_64
conda environment
EDIT: For anybody who is interested in solving this issue permanently look here. I had to upgrade to R Version 4.0.3 in order to make ggplot work properly again.
回答1:
This looks a lot like a font issue. Maybe the default ggplot font is not installed or damaged? Try querying installed fonts (for Linux):
system("fc-list")
Output should be a list of entries like this:
/usr/share/fonts/truetype/dejavu/DejaVuSerif.ttf: DejaVu Serif:style=Book
Then you can set the font as a default for your ggplot theme (name of the ttf file is the correct way to name it as far as I can tell):
theme_set(theme_gray(base_family = "DejaVuSerif"))
If this returns the same result, try another one.
回答2:
try to solve the problem by changing the text size and the color and theme of you're text? maybe that will work... sth like this:
ggplot(data, aes(x=xValue, y=yValue)) +
geom_line() + theme(text = element_text(size=20))
来源：https://stackoverflow.com/questions/65898007/ggplot2-issue-graph-text-shown-with-weird-unicode-blocks