inbar: no visible global function definition for 'read.csv'
inbar: no visible global function definition for 'read.table'
inbar: no visible global function definition for 'gray'
inbar: no visible global function definition for 'rainbow'
inbar: no visible global function definition for 'plot'
inbar: no visible global function definition for 'spplot'
inbar: no visible global function definition for 'barplot'
inbox: no visible global function definition for 'read.csv'
inbox: no visible global function definition for 'read.table'
inbox: no visible global function definition for 'gray'
inbox: no visible global function definition for 'plot'
inbox: no visible global function definition for 'spplot'
inbox: no visible global function definition for 'boxplot'
indot: no visible global function definition for 'read.csv'
indot: no visible global function definition for 'read.table'
indot: no visible global function definition for
  'SpatialPointsDataFrame'
indot: no visible global function definition for 'coordinates'
indot: no visible global function definition for 'CRS'
indot: no visible global function definition for 'as'
indot: no visible global function definition for 'plot'
indot: no visible global function definition for 'bubble'
indot: no visible global function definition for 'dotchart'
inhist: no visible global function definition for 'read.csv'
inhist: no visible global function definition for 'read.table'
inhist: no visible global function definition for 'plot'
inhist: no visible global function definition for 'spplot'
inhist: no visible global function definition for 'hist'
inhist: no visible global function definition for 'dnorm'
inhist: no visible global function definition for 'sd'
inhist: no visible global function definition for 'lines'
inhist: no visible global function definition for 'density'
inhist: no visible global function definition for 'polygon'
inline: no visible global function definition for 'read.csv'
inline: no visible global function definition for 'read.table'
inline: no visible global function definition for 'plot'
inline: no visible global function definition for 'spplot'
inline: no visible global function definition for 'lines'
inmap: no visible global function definition for
  'SpatialPointsDataFrame'
inmap: no visible global function definition for 'coordinates'
inmap: no visible global function definition for 'CRS'
inmap: no visible global function definition for 'as'
inmap: no visible global function definition for 'plot'
inmap: no visible global function definition for 'bubble'
inmap: no visible global function definition for 'spplot'
inpie: no visible global function definition for 'read.csv'
inpie: no visible global function definition for 'read.table'
inpie: no visible global function definition for 'rainbow'
inpie: no visible global function definition for 'gray'
inpie: no visible global function definition for 'plot'
inpie: no visible global function definition for 'spplot'
inpie: no visible global function definition for 'pie'
inscatter: no visible global function definition for 'read.csv'
inscatter: no visible global function definition for 'read.table'
inscatter: no visible global function definition for 'plot'
inscatter: no visible global function definition for 'spplot'
summary.scattermap: no visible global function definition for 'cor'
summary.scattermap: no visible global function definition for 'lm'
Undefined global functions or variables:
  CRS SpatialPointsDataFrame as barplot boxplot bubble coordinates cor
  density dnorm dotchart gray hist lines lm pie plot polygon rainbow
  read.csv read.table sd spplot
Consider adding
  importFrom("grDevices", "gray", "rainbow")
  importFrom("graphics", "barplot", "boxplot", "dotchart", "hist",
             "lines", "pie", "plot", "polygon")
  importFrom("methods", "as")
  importFrom("stats", "cor", "density", "dnorm", "lm", "sd")
  importFrom("utils", "read.csv", "read.table")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').