Error in dev.off() : cannot shut down device 1 (the null device)

[Nick_Riches]

Hi

I am trying to output a plot. I keep on obtaining the above error. I cannot seem to shut down the null device. dev.list() shows NULL. I have reproduced the relevant code below along with the session info.

This is an error I have had time and time again in Rstudio.

Thanks

df <- read.csv("df_Juan.csv")

df %>%
  arrange(age_days) %>%
  mutate(cum_verb_types = cummax(as.numeric(factor(spa_eng, levels = unique(spa_eng))))) %>%
  group_by(age_days) %>%
  summarise(cum_verb_types = max(cum_verb_types)) -> juan.cvt

g <- ggplot(data = juan.cvt, aes(x = age_days, y = cum_verb_types))
g <- g + geom_smooth(se = FALSE)
g

png("Juan cum verb types 750")
g <- ggplot(data = juan.cvt %>% filter(age_days <= 750), aes(x = age_days, y = cum_verb_types))
g <- g + geom_point(colour = "dark grey")
g <- g  + stat_smooth(method="lm", se=TRUE, fill=NA, formula=y ~ poly(x, 3, raw=TRUE),colour="red")
g <- g + theme_bw()
g
dev.off()

R version 3.5.0 (2018-04-23)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS 10.14.2

Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib

locale:
[1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] stats graphics grDevices utils datasets methods
[7] base

other attached packages:
[1] bindrcpp_0.2.2 forcats_0.3.0 stringr_1.3.1
[4] dplyr_0.7.5 purrr_0.2.4 readr_1.1.1
[7] tidyr_0.8.1 tibble_1.4.2 ggplot2_3.0.0
[10] tidyverse_1.2.1

loaded via a namespace (and not attached):
[1] Rcpp_0.12.17 cellranger_1.1.0 pillar_1.2.2
[4] compiler_3.5.0 plyr_1.8.4 bindr_0.1.1
[7] tools_3.5.0 jsonlite_1.5 lubridate_1.7.4
[10] nlme_3.1-137 gtable_0.2.0 lattice_0.20-35
[13] pkgconfig_2.0.1 rlang_0.2.0 psych_1.8.4
[16] cli_1.0.0 rstudioapi_0.7 yaml_2.1.19
[19] parallel_3.5.0 haven_1.1.1 knitr_1.20
[22] withr_2.1.2 xml2_1.2.0 httr_1.3.1
[25] hms_0.4.2 grid_3.5.0 tidyselect_0.2.4
[28] glue_1.2.0 R6_2.2.2 readxl_1.1.0
[31] pacman_0.4.6 foreign_0.8-70 reshape2_1.4.3
[34] modelr_0.1.2 magrittr_1.5 scales_0.5.0
[37] rvest_0.3.2 assertthat_0.2.0 mnormt_1.5-5
[40] colorspace_1.3-2 labeling_0.3 stringi_1.2.2
[43] lazyeval_0.2.1 munsell_0.4.3 broom_0.4.4
[46] crayon_1.3.4

[Nick_Riches]

P.S. This is definitely an RStudio issue, as the code runs fine in R.

[Nick_Riches]

Hi. It's all working fine now after I restarted my RStudio session. But is there a programmatic way to reset the null device without restarting the session? (NB dev.off()) does not work as it should)

[Nick_Riches]

Okay... it's happened again. I have just restarted again, and it's fine, but having to continually restart RStudio is not convenient.

[andresrcs]

What version of Rstudio are you using? Have you tried the latest daily build?

If you are experiencing this issue with the latest daily build, then you should file an issue on github.

[Nick_Riches]

Thanks. I'm using the latest version (Version 1.1.463 – © 2009-2018 RStudio, Inc.). I'll have a look at the daily build.