title: R- jupyter notebooks: text error when plotting
body: <p>I am plotting with ggplot/baseplot in jupyter notebooks, using a R-Kernel (and the package repr is loaded). However no text/ only weirdly positioned f's are displayed. Any idea what the reason is?</p>
  
  <p>See for ggplot: </p>
  
  <pre><code>data("iris")
  scatter &lt;- ggplot(data=iris, aes(x = Sepal.Length, y = Sepal.Width)) 
  scatter + geom_point(aes(color=Species, shape=Species)) +
   xlab("Sepal Length") +  ylab("Sepal Width") +
   ggtitle("Sepal Length-Width")
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/JUJUJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JUJUJ.png" alt="enter image description here"></a></p>
  
  <p>Same is the case for normal base R plots:</p>
  
  <pre><code>options(repr.plot.width=4, repr.plot.height=3)
  options(jupyter.plot_mimetypes = "image/svg+xml")
  plot(iris$Sepal.Length, iris$Sepal.Width, main = "blabla")
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/cqZCd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cqZCd.png" alt="enter image description here"></a></p>
  
  <pre><code>R version 3.5.1 (2018-07-02)
  Platform: x86_64-pc-linux-gnu (64-bit)
  Running under: CentOS Linux 7 (Core)
  
  Matrix products: default
  BLAS: /home/janinek/.conda/envs/R-3.5.1/lib/R/lib/libRblas.so
  LAPACK: /home/janinek/.conda/envs/R-3.5.1/lib/R/lib/libRlapack.so
  
  locale:
   [1] LC_CTYPE=C                 LC_NUMERIC=C              
   [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
   [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
   [7] LC_PAPER=en_US.UTF-8       LC_NAME=C                 
   [9] LC_ADDRESS=C               LC_TELEPHONE=C            
  [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
  [1] repr_0.15.0    ggplot2_3.0.0  reshape2_1.4.3
  
  loaded via a namespace (and not attached):
   [1] Rcpp_0.12.18     compiler_3.5.1   pillar_1.3.0     plyr_1.8.4      
   [5] bindr_0.1.1      base64enc_0.1-3  tools_3.5.1      digest_0.6.15   
   [9] uuid_0.1-2       jsonlite_1.5     evaluate_0.11    tibble_1.4.2    
  [13] gtable_0.2.0     pkgconfig_2.0.1  rlang_0.2.1      IRdisplay_0.5.0 
  [17] IRkernel_0.8.12  bindrcpp_0.2.2   withr_2.1.2      stringr_1.3.1   
  [21] dplyr_0.7.6      grid_3.5.1       tidyselect_0.2.4 glue_1.3.0      
  [25] R6_2.2.2         pbdZMQ_0.3-3     purrr_0.2.5      magrittr_1.5    
  [29] scales_0.5.0     htmltools_0.3.6  assertthat_0.2.0 colorspace_1.3-2
  [33] labeling_0.3     stringi_1.2.4    lazyeval_0.2.1   munsell_0.5.0   
  [37] crayon_1.3.4    
  </code></pre>