.containedBy: no visible global function definition for
  'projectMercator'
.makeCensusDialog: no visible global function definition for 'J'
.makeCensusDialog: no visible global function definition for 'new'
.makeCensusDialog: no visible global function definition for '.jnull'
.onLoad: no visible global function definition for '.jnull'
.onLoad: no visible global function definition for '.jpackage'
.onLoad: no visible global function definition for '.jengine'
.onLoad: no visible global function definition for 'J'
.subsetLines: no visible global function definition for
  'projectMercator'
.subsetPoints: no visible global function definition for
  'projectMercator'
.subsetPoly: no visible global function definition for
  'projectMercator'
loadCensusData: no visible global function definition for
  'install.packages'
loadCensusData: no visible global function definition for 'data'
spatialBubblePlot: no visible global function definition for 'slot'
spatialBubblePlot: no visible global function definition for
  'coordinates'
spatialBubblePlot: no visible global function definition for 'symbols'
spatialChoropleth: no visible global function definition for 'slot'
spatialChoropleth: no visible binding for global variable 'heat.colors'
spatialChoropleth : palette: no visible global function definition for
  'rainbow'
spatialChoropleth: no visible global function definition for
  'manual_pal'
spatialChoropleth: no visible global function definition for
  'gradient_n_pal'
spatialChoropleth: no visible global function definition for
  'heat.colors'
spatialChoropleth: no visible global function definition for 'cscale'
spatialChoropleth: no visible global function definition for 'quantile'
spatialChoropleth: no visible global function definition for 'title'
spatialChoropleth: no visible global function definition for 'legend'
spatialColoredPoints: no visible global function definition for 'slot'
spatialColoredPoints : palette: no visible global function definition
  for 'rainbow'
spatialColoredPoints: no visible global function definition for
  'manual_pal'
spatialColoredPoints: no visible global function definition for
  'legend'
spatialColoredPoints: no visible global function definition for
  'gradient_n_pal'
spatialColoredPoints: no visible global function definition for
  'heat.colors'
spatialColoredPoints: no visible global function definition for
  'cscale'
spatialColoredPoints: no visible global function definition for
  'quantile'
spatialTextPlot: no visible global function definition for
  'coordinates'
spatialTextPlot: no visible global function definition for 'slot'
Undefined global functions or variables:
  .jengine .jnull .jpackage J coordinates cscale data gradient_n_pal
  heat.colors install.packages legend manual_pal new projectMercator
  quantile rainbow slot symbols title
Consider adding
  importFrom("grDevices", "heat.colors", "rainbow")
  importFrom("graphics", "legend", "symbols", "title")
  importFrom("methods", "new", "slot")
  importFrom("stats", "quantile")
  importFrom("utils", "data", "install.packages")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').