Here are the function with brief descriptions:
 btkAppendAnalog | Append a new analog channel into the given acquisition and (optionally) return an updated list of analog channels |
| btkAppendAnalysisParameter | Convenient function to insert or set data into the metadata ANALYSIS formated as required by Vicon |
| btkAppendEvent | Append a new event into the given acquisition and (optionally) return an updated list of events |
| btkAppendForcePlatformType2 | Append a virtual force platform of type 2 (Fx,Fy,Fz,Mx,My,Mz) |
| btkAppendMetaData | Append a new metada into the given acquisition and (optionally) return an updated list of the metadata |
| btkAppendPoint | Append a new point into the given acquisition and (optionally) return an updated list of points |
| btkClearAnalogs | Remove all analog channels in the given acquisition |
| btkClearAnalysis | Clear the content of the metadata ANALYSIS |
| btkClearEvents | Remove all analog channels in the given acquisition |
| btkClearMetaData | Remove all metadata in the given acquisition |
| btkClearPoints | Remove all points in the given acquisition |
| btkCloneAcquisition | Clone the given acquisition |
| btkCloseAcquisition | Release the memory associated with a C++ btk::Acquisition object |
| btkCropAcquisition | Crop the acquistion and adapt the events' frame/time |
| btkDeleteAcquisition | Delete the acquisiton associated with the given handle |
| btkEmulateC3Dserver | Creates an emulated COM object for C3Dserver |
| btkFindMetaData | Return the searched metadata or 0 if not found |
| btkGetAnalog | Extract one analog channel from the given acquisition based on an index or a string |
| btkGetAnalogFrameNumber | Return the number of frames for the analog channels |
| btkGetAnalogFrequency | Return the analog frequency used in the given acquisition |
| btkGetAnalogNumber | Return the number of analog channels |
| btkGetAnalogResolution | Returns the analog to digital converter (ADC) resolution |
| btkGetAnalogs | Extract analog channels from the given biomechanical acquisition |
| btkGetAnalogSampleNumberPerFrame | Return the number of analog samples per video frame |
| btkGetAnalogsValues | Extract analog channels' values and store them in a matrix |
| btkGetAnalysis | Extract data contained in the metadata ANALYSIS and its children from the given acquisition |
| btkGetAngles | Extract angles from a given biomechanical acquisition |
| btkGetAnglesValues | Extract angles' values from the given acquisition and store them in a matrix |
| btkGetEventNumber | Return the number of events |
| btkGetEvents | Extract events from a biomechanical acquisition |
| btkGetEventsValues | Extract events' values from the given biomechanical acquisition |
| btkGetFirstFrame | Return acquisition's first frame index |
| btkGetForcePlatforms | Extract force platforms' informations from the given biomechanical acquisition |
| btkGetForcePlatformWrenches | Extract force platform wrenches expressed in the global frame from a given acquisition |
| btkGetForces | Extract forces from a given biomechanical acquisition |
| btkGetForcesValues | Extract forces' values from the given acquisition and store them in a matrix |
| btkGetGroundReactionWrenches | Extract ground reaction wrenches (GRW) expressed in the global frame from a given acquisition |
| btkGetLastFrame | Return acquisition's last frame index |
| btkGetMarkers | Extract markers from a given biomechanical acquisition |
| btkGetMarkersResiduals | Extract markers' residuals from the given acquisition and store them in a matrix |
| btkGetMarkersValues | Extract markers' values from the given acquisition and store them in a matrix |
| btkGetMaxInterpolationGap | Return acquisition's maximum interpolation gap |
| btkGetMetaData | Extract metadata for the given acquisition |
| btkGetMoments | Extract moments from a given biomechanical acquisition |
| btkGetMomentsValues | Extract moments' values from the given acquisition and store them in a matrix |
| btkGetPoint | Extract one point from the given acquisition based on an index or a string |
| btkGetPointFrameNumber | Return the number of frames for the points in the given acquisition |
| btkGetPointFrequency | Return the point's frequency for the given acquisition |
| btkGetPointNumber | Return the number of points stored in the given acquisition |
| btkGetPoints | Extract points from the given acquisition |
| btkGetPointsResiduals | Extract points' residuals from the given acquisition and store them in a matrix |
| btkGetPointsUnit | Returns requested points' unit |
| btkGetPointsValues | Extract points' values from the given acquisition and store them in a matrix |
| btkGetPowers | Extract powers from a given biomechanical acquisition |
| btkGetPowersValues | Extract powers' values from the given acquisition and store them in a matrix |
| btkGetScalars | Extract scalars from a given biomechanical acquisition |
| btkGetScalarsValues | Extract scalars' values from the given acquisition and store them in a matrix |
| btkGetVersion | Return the release number of BTK |
| btkMergeAcquisitions | Merge or contatenate the given acquisitions |
| btkMetaDataInfo | Create a structure containing the required fields for the informations of a metadata |
| btkNewAcquisition | Create a new and initialized acquisition |
| btkReadAcquisition | Read an acquisition's file (C3D, TRC, ...) |
| btkRemoveAnalog | Delete the analog channel with the given index or label |
| btkRemoveAnalysisParameter | Erase in the metadata ANALYSIS the parameter the given index or context/name |
| btkRemoveEvent | Delete events corresponding to the given criterias |
| btkRemoveMetaData | Remove a metada and return an updated list of the metada in the acquisition |
| btkRemovePoint | Delete the point with the given index or label |
| btkSetAnalogDescription | Modify the analog's description and return a list of the updated analog channels |
| btkSetAnalogGain | Modify analog's gain and return updated analogs |
| btkSetAnalogLabel | Modify analog's label and return updated analogs |
| btkSetAnalogNumber | Sets the number of analog channels |
| btkSetAnalogOffset | Modify analog's offset and return updated analogs |
| btkSetAnalogResolution | Sets the ADC resolution |
| btkSetAnalogSampleNumberPerFrame | Set the number of analog sample per 3D frame |
| btkSetAnalogScale | Modify analog's scale and return updated analogs |
| btkSetAnalogsValues | Sets analog channels' values from a matrix |
| btkSetAnalogUnit | Modify the analog's unit and return a list of the updated analog channels |
| btkSetAnalogValues | Modify analog's value and return updated analogs |
| btkSetAnglesValues | Sets angles' components from a matrix |
| btkSetEventDescription | Modify the description of all events which have the required label |
| btkSetEventId | Modify the id of all events which have the required label |
| btkSetEventLabel | Modify the label of the selected event |
| btkSetEventSubject | Modify the subject's information of the selected event |
| btkSetEventTime | Modify the time of the selected event |
| btkSetFirstFrame | Set acquisition's first frame index (and optionally adapt events' frame/time) |
| btkSetForcesValues | Sets forces' components from a matrix |
| btkSetFrameNumber | Set points and analogs frames number |
| btkSetFrequency | Set the main frequency |
| btkSetMarkersResiduals | Sets markers' residuals from a matrix |
| btkSetMarkersValues | Sets markers' coordinates from a matrix |
| btkSetMaxInterpolationGap | Set acquisition's maximum interpolation gap |
| btkSetMetaData | Set an existing metada into the given acquisition and (optionally) return an updated list of the metadata |
| btkSetMetaDataDescription | Set a metadata's description |
| btkSetMetaDataDimensions | Set metadata's dimensions |
| btkSetMetaDataFormat | Set a metadata's format |
| btkSetMetaDataLabel | Set a metadata's label |
| btkSetMetaDataUnlock | Et the unlock state of a metadata |
| btkSetMetaDataValue | Set one metadata's value |
| btkSetMomentsValues | Sets moments' components from a matrix |
| btkSetPoint | Modify point's data and return updated points |
| btkSetPointDescription | Modify point's description and return updated points |
| btkSetPointLabel | Modify point's label and return updated points |
| btkSetPointNumber | Sets the number of points |
| btkSetPointResiduals | Sets point's residuals from a row vector |
| btkSetPointsResiduals | Sets points' residuals from a matrix |
| btkSetPointsUnit | Modify points' unit |
| btkSetPointsValues | Sets points' components from a matrix |
| btkSetPointType | Modify point's type and return updated points |
| btkSetPointValues | Sets point's coordinates (values) from a matrix |
| btkSetPowersValues | Sets powers' components from a matrix |
| btkSetScalarsValues | Sets scalars' coordinates from a matrix |
| btkTransformTDFToViconC3DFile | Transforms a TDF file (BTS Bioengineering) to a compatible Vicon C3D file |
 btkWriteAcquisition | Write acquisition's data into file (C3D, TRC, ...) |
