为什么在使用 plot() 时轴标题和标签不显示在基础 R 中？

Question

I'm trying to run plot() , and I can't get the default axis labels or titles to show up on either the x or y axes. The last time I ran this code, it worked just fine. Both R and R Studio have been updated within the last month, and I've tried closing and restarting R Studio. I have the same issue with both my own data and built in data, such as the iris data set. As you can see, without repressing the axis labels and titles, no axis labels and titles are added to the plot of sepal length by species.

plot(iris$Species, iris$Sepal.Length)

I think not seeing axis labels and titles is a symptom of a larger issue, as I'm also having difficulty adding any labels or titles using commands like title(ylab="Sepal Length", line=2.5, cex.lab=1, family = "Calibri Light") . Either the code runs without error and no label appears (if I don't specify font family), or I get an error message font family not found . I've tried adding the extrafonts package and using fonts that I know are installed in that package, but I get this error regardless. It seems there's something preventing me from adding any text to base R plots. Any insights would be much appreciated.

Answer 1

I've encountered this before and I think it is just a bug in R studio. Click the button that says clear all plots (the little broomstick) and it should perform as expected with the sample data.

Answer 2

Thanks - I was having the same issue but the "broomstick" did not work for me.

But I did confirm that this seems to be RStudio issue as when I output to a different graphics device the text is there.

Here's the MWE that I was trying:

library(extrafont)
#font_import(pattern = 'calibri')

#Works fine
dev.off()
plot(1,1)
text(1, 1, "Hello World", pos = 1)

# Specify Calibri through par
dev.off()
par(family = fonts()[1])
plot(1,1)
text(1, 1, "Hello World", pos = 1)
# No text, no axes
text(1, 1, "Hello World", pos = 1)
# a second call is not a solution
text(1, 1, "Hello World", pos = 1, cex = 0.7)
# is cex a solution - still no axes
axis(1, cex = 5) #not printing regardless of cex 
mtext(1, text = 'Hello World') #and mtext doesn't print either

Answer 3

I encountered the same problem on Mac OS 11.2.1 ; R 4.0.3 Restarting R Session within RStudio did not solve it. Shutting down Rstudio and restarting did not solve it. Launching the actual R application did not solve it. I finally did a Restart of my machine, and then everything works fine.

I originally ran into the problem after I used dev.copy(png, file="xxx.png"); dev.off() dev.copy(png, file="xxx.png"); dev.off() But now of course this works fine. So some more information, but I don't think it will ultimately "solve" the issue. Sorry.