areAllNonnegativeIntegers
                        Helper function to check if all values in the
                        input count matrix are either NA, NaN, or
                        non-negative integers
checkAutomaticCountsEstimatesArguments
                        Helper function to check the arguments input to
                        getAutomaticCountsEstimates
checkManualCountsEstimatesArguments
                        Helper function to check the arguments input to
                        getManualCountsEstimates
convertFishalyserCsvToCountMatrix
                        Function to convert CSV output of the
                        FISHalyseR automatic FISH splot counting
                        software to a count matrix suitable for input
                        to frenchFISH's getAutomaticCountsEstimates
generatePPdat           Helper function to convert spot counts and
                        nuclear area measurements into continuous
                        events for Poisson point estimation
getAutomaticCountsEstimates
                        FrenchFISH function for generating Poisson
                        point estimates of spot counts from spot counts
                        which have been automatically generated.
getAverageVolumeFrac    Helper function to get the average volume of
                        nucleus sampled given the nucleus radius and
                        section height
getManualCountsEstimates
                        FrenchFISH function for generating volume
                        adjusted spot counts from spots which have been
                        manually counted (uses a Markov chain Monte
                        Carlo method).
getMaxVolumeFrac        Helper function to get the maximum possible
                        volume of nucleus sampled given the nucleus
                        radius and section height
getMinVolumeFrac        Helper function that returns the minimum
                        possible volume of nucleus sampled given the
                        nucleus radius and section height
getVsegFrac             Helper function that returns the fraction of
                        the nucleus sampled for a specified distance
                        from the midpoint
