Here is a list of all documented functions with links to the class documentation for each member:

- r -

• race() : edu.wpi.first.wpilibj2.command.CommandGroupBase, edu.wpi.first.wpilibj2.command.Commands
• raceWith() : edu.wpi.first.wpilibj2.command.Command
• radiansPerSecondToRotationsPerMinute() : edu.wpi.first.math.util.Units
• radiansToDegrees() : edu.wpi.first.math.util.Units
• radiansToRotations() : edu.wpi.first.math.util.Units
• RamseteController() : edu.wpi.first.math.controller.RamseteController
• rankUpdate() : edu.wpi.first.math.Matrix< R extends Num, C extends Num >
• ReadOnlyPrimitiveLongSet() : edu.wpi.first.units.collections.ReadOnlyPrimitiveLongSet
• readQueue() : edu.wpi.first.networktables.DoubleArraySubscriber, edu.wpi.first.networktables.StringSubscriber
• readQueueValues() : edu.wpi.first.networktables.DoubleArraySubscriber, edu.wpi.first.networktables.StringSubscriber
• refresh() : edu.wpi.first.wpilibj.DSControlWord
• register() : edu.wpi.first.wpilibj2.command.Subsystem
• registerCommand() : com.pathplanner.lib.auto.NamedCommands
• registerCommands() : com.pathplanner.lib.auto.NamedCommands
• registerComposedCommands() : edu.wpi.first.wpilibj2.command.CommandScheduler
• registerSubsystem() : edu.wpi.first.wpilibj2.command.CommandScheduler
• relativeTo() : edu.wpi.first.math.geometry.Pose2d, edu.wpi.first.math.trajectory.Trajectory
• remove() : edu.wpi.first.units.collections.LongToObjectHashMap< V >, edu.wpi.first.util.sendable.SendableRegistry
• removeComposedCommand() : edu.wpi.first.wpilibj2.command.CommandScheduler
• removeDefaultCommand() : edu.wpi.first.wpilibj2.command.CommandScheduler, edu.wpi.first.wpilibj2.command.Subsystem
• RepeatCommand() : edu.wpi.first.wpilibj2.command.RepeatCommand
• repeatedly() : edu.wpi.first.wpilibj2.command.Command
• repeatingSequence() : edu.wpi.first.wpilibj2.command.Commands
• replan() : com.pathplanner.lib.path.PathPlannerPath
• ReplanningConfig() : com.pathplanner.lib.util.ReplanningConfig
• reportError() : edu.wpi.first.math.MathShared, edu.wpi.first.math.MathSharedStore
• reportUsage() : edu.wpi.first.math.MathShared, edu.wpi.first.math.MathSharedStore
• requireNonNullParam() : edu.wpi.first.util.ErrorMessages
• requireNotComposed() : edu.wpi.first.wpilibj2.command.CommandScheduler
• requireNotComposedOrScheduled() : edu.wpi.first.wpilibj2.command.CommandScheduler
• requiring() : edu.wpi.first.wpilibj2.command.CommandScheduler
• reset() : com.pathplanner.lib.controllers.PathFollowingController, com.pathplanner.lib.controllers.PPHolonomicDriveController, com.pathplanner.lib.controllers.PPLTVController, com.pathplanner.lib.controllers.PPRamseteController, com.pathplanner.lib.util.ChassisSpeedsRateLimiter, edu.wpi.first.math.controller.PIDController, edu.wpi.first.math.controller.ProfiledPIDController, edu.wpi.first.math.filter.SlewRateLimiter, edu.wpi.first.wpilibj.Timer, robotCore.DigitalCounter, robotCore.Encoder, robotCore.Gyro
• resetElapsedTime() : robotCore.Logger
• resetHeadings() : edu.wpi.first.math.kinematics.SwerveDriveKinematics
• resetPosition() : edu.wpi.first.math.estimator.SwerveDrivePoseEstimator, edu.wpi.first.math.kinematics.SwerveDriveOdometry
• resetTimer() : edu.wpi.first.wpilibj.Tracer
• restart() : edu.wpi.first.wpilibj.Timer
• rightBumper() : edu.wpi.first.wpilibj.XboxController, edu.wpi.first.wpilibj2.command.button.CommandXboxController
• rightStick() : edu.wpi.first.wpilibj.XboxController, edu.wpi.first.wpilibj2.command.button.CommandXboxController
• rightTrigger() : edu.wpi.first.wpilibj.XboxController, edu.wpi.first.wpilibj2.command.button.CommandXboxController
• rising() : edu.wpi.first.wpilibj.event.BooleanEvent
• robotInit() : edu.wpi.first.wpilibj.IterativeRobotBase
• robotPeriodic() : edu.wpi.first.wpilibj.IterativeRobotBase
• rotateBy() : edu.wpi.first.math.geometry.Pose2d, edu.wpi.first.math.geometry.Rotation2d, edu.wpi.first.math.geometry.Translation2d
• Rotation2d() : edu.wpi.first.math.geometry.Rotation2d
• rotationLerp() : com.pathplanner.lib.util.GeometryUtil
• rotationsPerMinuteToRadiansPerSecond() : edu.wpi.first.math.util.Units
• rotationsToDegrees() : edu.wpi.first.math.util.Units
• rotationsToRadians() : edu.wpi.first.math.util.Units
• RotationTarget() : com.pathplanner.lib.path.RotationTarget
• run() : edu.wpi.first.wpilibj2.command.Commands, edu.wpi.first.wpilibj2.command.CommandScheduler, edu.wpi.first.wpilibj2.command.Subsystem
• RunCommand() : edu.wpi.first.wpilibj2.command.RunCommand
• runEnd() : edu.wpi.first.wpilibj2.command.Commands, edu.wpi.first.wpilibj2.command.Subsystem
• runOnce() : edu.wpi.first.wpilibj2.command.Commands, edu.wpi.first.wpilibj2.command.Subsystem
• runsWhenDisabled() : edu.wpi.first.wpilibj2.command.Command, edu.wpi.first.wpilibj2.command.ConditionalCommand, edu.wpi.first.wpilibj2.command.ParallelCommandGroup, edu.wpi.first.wpilibj2.command.ParallelDeadlineGroup, edu.wpi.first.wpilibj2.command.ParallelRaceGroup, edu.wpi.first.wpilibj2.command.PerpetualCommand, edu.wpi.first.wpilibj2.command.PrintCommand, edu.wpi.first.wpilibj2.command.ProxyCommand, edu.wpi.first.wpilibj2.command.RepeatCommand, edu.wpi.first.wpilibj2.command.ScheduleCommand, edu.wpi.first.wpilibj2.command.SelectCommand< K >, edu.wpi.first.wpilibj2.command.SequentialCommandGroup, edu.wpi.first.wpilibj2.command.WaitCommand, edu.wpi.first.wpilibj2.command.WaitUntilCommand, edu.wpi.first.wpilibj2.command.WrapperCommand