.getObservation_1.0.0: no visible global function definition for
  ‘object.size’
.getObservation_1.0.0: no visible global function definition for
  ‘write.csv’
.kvpKeyAndValues: no visible global function definition for ‘is’
.sosRequest_1.0.0: no visible global function definition for
  ‘functionBody’
.toString.OwsGetCapabilities: no visible global function definition for
  ‘is’
GmlDirectPosition: no visible global function definition for ‘new’
GmlDirectPositionLatLon: no visible global function definition for
  ‘new’
GmlEnvelope: no visible global function definition for ‘new’
GmlFeatureCollection: no visible global function definition for ‘new’
GmlFeatureProperty: no visible global function definition for ‘new’
GmlMeasure: no visible global function definition for ‘new’
GmlPoint: no visible global function definition for ‘new’
GmlPointProperty: no visible global function definition for ‘new’
GmlTimeInstant: no visible global function definition for ‘new’
GmlTimeInstantProperty: no visible global function definition for ‘new’
GmlTimeInterval: no visible global function definition for ‘new’
GmlTimePeriod: no visible global function definition for ‘new’
GmlTimePosition: no visible global function definition for ‘new’
OgcBBOX: no visible global function definition for ‘new’
OgcContains: no visible global function definition for ‘new’
OgcIntersects: no visible global function definition for ‘new’
OgcOverlaps: no visible global function definition for ‘new’
OmMeasurement: no visible global function definition for ‘new’
OmObservation: no visible global function definition for ‘new’
OmObservationCollection: no visible global function definition for
  ‘new’
OmObservationProperty: no visible global function definition for ‘new’
OwsCapabilities: no visible global function definition for ‘new’
OwsContents: no visible global function definition for ‘new’
OwsException: no visible global function definition for ‘new’
OwsExceptionReport: no visible global function definition for ‘new’
OwsGetCapabilities: no visible global function definition for ‘new’
OwsOperation: no visible global function definition for ‘new’
OwsOperationsMetadata: no visible global function definition for ‘new’
OwsRange: no visible global function definition for ‘new’
OwsServiceIdentification: no visible global function definition for
  ‘new’
OwsServiceProvider: no visible global function definition for ‘new’
SOS: no visible global function definition for ‘getCurlHandle’
SOS: no visible global function definition for ‘new’
SOS: no visible global function definition for ‘is’
SaSamplingPoint: no visible global function definition for ‘new’
SaSamplingSurface: no visible global function definition for ‘new’
SensorML: no visible global function definition for ‘new’
SosCapabilities: no visible global function definition for ‘new’
SosContents: no visible global function definition for ‘new’
SosDescribeSensor: no visible global function definition for ‘new’
SosEventTime: no visible global function definition for ‘new’
SosEventTimeLatest: no visible global function definition for ‘new’
SosFeatureOfInterest: no visible global function definition for ‘new’
SosFilter_Capabilities: no visible global function definition for ‘new’
SosGetObservation: no visible global function definition for ‘new’
SosGetObservationById: no visible global function definition for ‘new’
SosObservationOffering: no visible global function definition for ‘new’
SweCompositePhenomenon: no visible global function definition for ‘new’
SwePhenomenon: no visible global function definition for ‘new’
SwePhenomenonProperty: no visible global function definition for ‘new’
SweTextBlock: no visible global function definition for ‘new’
TM_After: no visible global function definition for ‘new’
TM_Before: no visible global function definition for ‘new’
TM_During: no visible global function definition for ‘new’
TM_Equals: no visible global function definition for ‘new’
parseSosObservationOffering: no visible global function definition for
  ‘extends’
parseValues: no visible global function definition for ‘str’
plot.SensorML: no visible global function definition for ‘as’
plot.SosObservationOffering: no visible global function definition for
  ‘as’
plot,SensorML-missing: no visible global function definition for ‘as’
plot,SosObservationOffering-missing: no visible global function
  definition for ‘as’
sosCoordinates,SosObservationOffering: no visible global function
  definition for ‘as’
sosFeaturesOfInterest,SOS: no visible binding for global variable
  ‘slot’
sosTime,SosObservationOffering: no visible global function definition
  for ‘is’
Undefined global functions or variables:
  as extends functionBody getCurlHandle is new object.size slot str
  write.csv
Consider adding
  importFrom("methods", "as", "extends", "functionBody", "is", "new",
             "slot")
  importFrom("utils", "object.size", "str", "write.csv")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').