anchor.diff:  
   RUN rm \
      RColorBrewer_1.1-2.tar.gz \
  -   maps_3.2.0.tar.gz \
  +   maps_3.3.0.tar.gz \
      zoo_1.8-1.tar.gz \
      gcookbook_1.0.tar.gz \
      corrplot_0.84.tar.gz 
  
positive.code: # Cliburn Chan requested these:
  RUN DEBIAN_FRONTEND=noninteractive wget \
     https://mirrors.nics.utk.edu/cran/src/contrib/RColorBrewer_1.1-2.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/maps_3.2.0.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/zoo_1.8-1.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/gcookbook_1.0.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/corrplot_0.84.tar.gz 
  
negative.code: 
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     RColorBrewer_1.1-2.tar.gz \
     maps_3.3.0.tar.gz \
     zoo_1.8-1.tar.gz \
     gcookbook_1.0.tar.gz \
     corrplot_0.84.tar.gz 
  