choro.legend: no visible global function definition for 'strwidth'
choro.legend: no visible global function definition for 'legend'
choro.legend: no visible global function definition for 'text'
jitter.points: no visible global function definition for 'rnorm'
level.plot: no visible global function definition for '.filled.contour'
map.scale: no visible global function definition for 'par'
map.scale: no visible global function definition for 'rect'
map.scale: no visible global function definition for 'lines'
map.scale: no visible global function definition for 'text'
map.scale: no visible global function definition for 'strheight'
north.arrow: no visible global function definition for 'polygon'
north.arrow: no visible global function definition for 'text'
north.arrow: no visible global function definition for 'strheight'
poly.labels: no visible global function definition for 'slot'
poly.labels : <anonymous>: no visible global function definition for
  'slot'
quantileCuts: no visible global function definition for 'quantile'
sdCuts: no visible global function definition for 'sd'
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for 'strwidth'
choro.legend: no visible global function definition for 'legend'
choro.legend: no visible global function definition for 'text'
jitter.points: no visible global function definition for 'rnorm'
level.plot: no visible global function definition for '.filled.contour'
map.scale: no visible global function definition for 'par'
map.scale: no visible global function definition for 'rect'
map.scale: no visible global function definition for 'lines'
map.scale: no visible global function definition for 'text'
map.scale: no visible global function definition for 'strheight'
north.arrow: no visible global function definition for 'polygon'
north.arrow: no visible global function definition for 'text'
north.arrow: no visible global function definition for 'strheight'
poly.labels: no visible global function definition for 'slot'
poly.labels : <anonymous>: no visible global function definition for
  'slot'
quantileCuts: no visible global function definition for 'quantile'
sdCuts: no visible global function definition for 'sd'
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for 'strwidth'
choro.legend: no visible global function definition for 'legend'
choro.legend: no visible global function definition for 'text'
jitter.points: no visible global function definition for 'rnorm'
level.plot: no visible global function definition for '.filled.contour'
map.scale: no visible global function definition for 'par'
map.scale: no visible global function definition for 'rect'
map.scale: no visible global function definition for 'lines'
map.scale: no visible global function definition for 'text'
map.scale: no visible global function definition for 'strheight'
north.arrow: no visible global function definition for 'polygon'
north.arrow: no visible global function definition for 'text'
north.arrow: no visible global function definition for 'strheight'
poly.labels: no visible global function definition for 'slot'
poly.labels : <anonymous>: no visible global function definition for
  'slot'
quantileCuts: no visible global function definition for 'quantile'
sdCuts: no visible global function definition for 'sd'
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for ‘strwidth’
choro.legend: no visible global function definition for ‘legend’
choro.legend: no visible global function definition for ‘text’
jitter.points: no visible global function definition for ‘rnorm’
level.plot: no visible global function definition for ‘.filled.contour’
map.scale: no visible global function definition for ‘par’
map.scale: no visible global function definition for ‘rect’
map.scale: no visible global function definition for ‘lines’
map.scale: no visible global function definition for ‘text’
map.scale: no visible global function definition for ‘strheight’
north.arrow: no visible global function definition for ‘polygon’
north.arrow: no visible global function definition for ‘text’
north.arrow: no visible global function definition for ‘strheight’
poly.labels: no visible global function definition for ‘slot’
poly.labels : <anonymous>: no visible global function definition for
  ‘slot’
quantileCuts: no visible global function definition for ‘quantile’
sdCuts: no visible global function definition for ‘sd’
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').
choro.legend: no visible global function definition for 'strwidth'
choro.legend: no visible global function definition for 'legend'
choro.legend: no visible global function definition for 'text'
jitter.points: no visible global function definition for 'rnorm'
level.plot: no visible global function definition for '.filled.contour'
map.scale: no visible global function definition for 'par'
map.scale: no visible global function definition for 'rect'
map.scale: no visible global function definition for 'lines'
map.scale: no visible global function definition for 'text'
map.scale: no visible global function definition for 'strheight'
north.arrow: no visible global function definition for 'polygon'
north.arrow: no visible global function definition for 'text'
north.arrow: no visible global function definition for 'strheight'
poly.labels: no visible global function definition for 'slot'
poly.labels : <anonymous>: no visible global function definition for
  'slot'
quantileCuts: no visible global function definition for 'quantile'
sdCuts: no visible global function definition for 'sd'
Undefined global functions or variables:
  .filled.contour legend lines par polygon quantile rect rnorm sd slot
  strheight strwidth text
Consider adding
  importFrom("graphics", ".filled.contour", "legend", "lines", "par",
             "polygon", "rect", "strheight", "strwidth", "text")
  importFrom("methods", "slot")
  importFrom("stats", "quantile", "rnorm", "sd")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').