population: no visible global function definition for 'weighted.mean'
population: no visible global function definition for 'rpois'
population: no visible global function definition for 'lm'
population: no visible global function definition for 'coefficients'
population: no visible global function definition for 'sd'
population: no visible global function definition for 'par'
population: no visible global function definition for 'lines'
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for 'weighted.mean'
population: no visible global function definition for 'rpois'
population: no visible global function definition for 'lm'
population: no visible global function definition for 'coefficients'
population: no visible global function definition for 'sd'
population: no visible global function definition for 'par'
population: no visible global function definition for 'lines'
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for 'weighted.mean'
population: no visible global function definition for 'rpois'
population: no visible global function definition for 'lm'
population: no visible global function definition for 'coefficients'
population: no visible global function definition for 'sd'
population: no visible global function definition for 'par'
population: no visible global function definition for 'lines'
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for ‘weighted.mean’
population: no visible global function definition for ‘rpois’
population: no visible global function definition for ‘lm’
population: no visible global function definition for ‘coefficients’
population: no visible global function definition for ‘sd’
population: no visible global function definition for ‘par’
population: no visible global function definition for ‘lines’
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.
population: no visible global function definition for 'weighted.mean'
population: no visible global function definition for 'rpois'
population: no visible global function definition for 'lm'
population: no visible global function definition for 'coefficients'
population: no visible global function definition for 'sd'
population: no visible global function definition for 'par'
population: no visible global function definition for 'lines'
Undefined global functions or variables:
  coefficients lines lm par rpois sd weighted.mean
Consider adding
  importFrom("graphics", "lines", "par")
  importFrom("stats", "coefficients", "lm", "rpois", "sd",
             "weighted.mean")
to your NAMESPACE file.