Package ptolemy.actor.lib

Polymorphic actor classes.

See:
Description

Interface Summary

SequenceActor

This is a marker interface for actors that operate on sequences.

Class Summary

AbsoluteValue	Produce an output token on each firing with a value that is equal to the absolute value of the input.
AbsoluteValue.FunctionTerm
Accumulator	Output the initial value plus the sum of all the inputs since the last time a true token was received at the reset port.
AddSubtract	A polymorphic adder/subtractor.
ArrayAppend	An actor that appends ArrayTokens together.
ArrayAverage	Compute the average of the elements in an array.
ArrayContains	Determine whether an element is contained in an array.
ArrayElement	Extract an element from an array.
ArrayElementAsMatrix	Extract an element from an array by accessing the array as a matrix.
ArrayExtract	Extract a subarray from an array.
ArrayLength	Output the length of an array.
ArrayLevelCrossing	Search an array from the specified starting index and report the index of the first item in the array that is below or above the specified threshold.
ArrayMaximum	Extract the maximum element from an array.
ArrayMinimum	Extract the minimum element from an array.
ArrayPeakSearch	This actor outputs the indices and values of peaks in an input array.
ArrayRemoveElement	Remove occurrences of a specified element from an array.
ArraySort	Sort the elements of an input array.
ArraySum	Compute the sum of the elements in an array.
ArrayToElements	An actor that disassembles an ArrayToken to a multiport output.
Average	Output the average of the inputs after the last time a true token is received at the reset port.
Bernoulli	Produce a random sequence of booleans.
BooleanMultiplexor	A type polymorphic multiplexor with boolean valued select.
BooleanSelect	Conditionally merge the streams at two input ports depending on the value of the boolean control input.
BooleanSwitch	Split an input stream onto two output ports depending on a boolean control input.
BusAssembler	Aggregate all input relation channels into one output "bus" relation.
BusDisassembler	Split the input bus relation into individual (possibly bus) output port relations.
ClassWrapper	This actor wraps (an instance of) a Java class specified by the className parameter.
Clock	This actor produces a periodic signal, a sequence of events at regularly spaced intervals.
ClockSensor	This actor produces a periodic signal, a sequence of events at regularly spaced intervals.
Commutator	A polymorphic commutator, which merges a set of input sequences into a single output sequence.
Commutator.WidthDependentParameter	This class will set _port.getWidth() + " * blockSize" as expression of the parameter, but will only do it when the token is requested to delay the triggering of the width.
ComputeHistogram	Compute a histogram.
ConfigurationSelect	Conditionally merge the streams at two input ports depending on the value of the boolean parameter.
ConfigurationSwitch	Split an input stream onto two output ports depending on a boolean selector parameter.
Const	Produce a constant output.
Counter	This actor implements an up-down counter of received tokens.
CurrentTime	Produce an output token on each firing with a value that is the current time.
DB	Produce a token that is the value of the input in decibels.
DelayStart	This actor, which has no ports, delays the execution of the model until a specified time by sleeping the thread that calls the initialize() method until the specified time.
Differential	Output the current input minus the previous input, or if there has been no previous input, the current input itself.
Discard	A simple sink actor that consumes and discards input tokens.
DiscreteClock	This actor produces a periodic signal, a sequence of events at regularly spaced intervals.
DiscreteRandomSource	An actor that produces tokens with a given probability mass function.
Distributor	A polymorphic distributor, which splits an input stream into a set of output streams.
Distributor.WidthDependentParameter	This class will set _port.getWidth() + " * blockSize" as expression of the parameter, but will only do it when the token is requested to delay the triggering of the width.
DoubleReader	Deprecated. Use ExpressionReader instead.
ElementsToArray	On each firing, this actor reads exactly one token from each channel of the input port and assembles the tokens into an ArrayToken.
Exec	Execute a command as a separately running subprocess.
ExecutionTime	Read the input token, if there is one, execute an (uninteresting) computation to consume a specified amount of real time or to execute it a fixed number of times, and produce on the output the actual execution time (in milliseconds).
Exit	A simple sink actor that consumes and discards input tokens and then calls System.exit() in wrapup.
Expression	On each firing, evaluate an expression that may include references to the inputs, current time, and a count of the firing.
FileWriter	Deprecated. This actor is deprecated.
Gaussian	Produce a random sequence with a Gaussian distribution.
GetCausalityInterface	Actor that reads the causality interface of its container or an actor inside the container and produces a string describing it.
GradientAdaptiveLattice	An adaptive FIR filter with a lattice structure.
IIR	This actor is an implementation of an infinite impulse response IIR filter.
Interpolator	Produce an interpolation based on the parameters.
Lattice	An FIR filter with a lattice structure.
LevinsonDurbin	This actor uses the Levinson-Durbin algorithm to compute the linear predictor coefficients of a random process, given its autocorrelation function as an input.
LimitedFiringSource	Base class for source actors that will only fire a limited number of times.
Limiter	Produce an output token on each firing with a value that is equal to the input if the input lies between the bottom and top parameters.
LinearDifferenceEquationSystem	Linear Difference Equation System.
LookupTable	Output to the output port the value in the array of tokens specified by the table parameter at the index specified by the input port.
MathFunction	Deprecated. This breaks the class mechanism.
Maximum	Read at most one token from each input channel and broadcast the one with the greatest value to the maximumValue output.
MaxIndex	Deprecated. Use Maximum instead.
Minimum	Read at most one token from each input channel and broadcast the one with the least value to the minimumValue output.
MonitorValue	Monitor inputs by setting the value parameter equal to each arriving token.
MovingAverage	This actor outputs the moving average of the input sequence.
MovingMaximum	On each firing, this actor consumes exactly one scalar token at its input port.
Multiplexor	This actor selects from the channels on the input port, copying the input from one channel to the output, based on the most recently received value on the select input.
MultiplyDivide	A polymorphic multiplier and/or divider.
NonStrictTest	This actor compares the inputs against the value specified by the correctValues parameter.
OrderedMerge	This actor merges two monotonically nondecreasing streams of tokens into one monotonically nondecreasing stream.
OrderedRecordAssembler	On each firing, read one token from each input port and assemble them into a RecordToken.
PhaseUnwrap	This actor unwraps a phase plot, removing discontinuities of magnitude 2*PI.
PoissonClock	This actor produces discrete events according to a Poisson process.
Publisher	This actor publishes input tokens on a named channel.
PublisherNonStrictTest	This actor publishes input tokens on a named channel and compares the inputs against the value specified by the correctValues parameter.
PublisherTest	This actor publishes input tokens on a named channel and compares the inputs against the value specified by the correctValues parameter.
Pulse	Produce a pulse with a shape specified by the parameters.
Quantizer	Produce an output token on each firing with a value that is a quantized version of the input.
Ramp	Produce an output token on each firing with a value that is incremented by the specified step each iteration.
RandomSource	A base class for sources of random numbers.
Reader	Deprecated. Use ExpressionReader instead.
RecordAssembler	On each firing, read one token from each input port and assemble them into a RecordToken.
RecordDisassembler	On each firing, read one RecordToken from the input port and send out the fields of the RecordToken to multiple output ports.
Recorder	Record all input tokens for later querying.
RecordUpdater	On each firing, read one token from each input port and assemble them into a RecordToken that contains the union of the original input record and each of the update ports.
RecursiveLattice	A recursive (all-pole) filter with a lattice structure.
Remainder	Compute the remainder after dividing the input by the divisor.
RemoveNilTokens	Read in tokens and silently discard any tokens that are marked as nil.
ResettableTimer	Produce an output after the time specified on the input has elapsed.
Rician	Produce a random sequence with a Rician distribution.
Sampler	This actor generates discrete events by sampling the input signal whenever the trigger input is present.
Scale	Produce an output token on each firing with a value that is equal to a scaled version of the input.
Select	A polymorphic select, which routes specified input channels to the output.
Sequence	This actor produces a sequence of values, optionally periodically repeating them.
Sequencer	This actor takes a sequence of inputs tagged with a sequence number and produces them on the output port in the order given by the sequence number.
SequenceSource	Base class for sequence sources.
SequentialClock	Deprecated. Use Clock instead.
SetVariable	Set the value of a variable contained by the container.
SingleTokenCommutator	The SingleTokenCommutator has a multiport input port and an output port.
Sink	Base class for simple data sinks.
Sleep	On each firing, read at most one token from each input channel, sleep by the specified amount of real time, and then produce the same input tokens on the respective output channels.
Source	Base for simple data sources.
Stop	An actor that stops execution of a model when it receives a true token on any input channel.
StringConst	Produce a constant output of type string.
SubMatrix	This actor extract a submatrix from an input matrix.
Subscriber	This actor subscribes to tokens on a named channel.
SubscriptionAggregator	Aggregate data produced by multiple publishers.
Switch	A polymorphic switch, which routes inputs to specified output channels.
Synchronizer	This actor implements a token synchronizer.
Test	This actor compares the inputs against the value specified by the correctValues parameter.
TestExceptionHandler	This actor tests for exceptions that are expected to occur when running a test model.
ThrowException	An actor that throws an IllegalActionException when it receives a true token on any input channel.
ThrowModelError	An actor that throws a model error when it receives a true token on any input channel.
TimeDelay	This actor delays the input by a specified amount of time.
TimedSource	Base class for time-based sources.
TopLevelCurrentTime	Produce an output token on each firing with a value that is the time of the top level director.
Transformer	This is an abstract base class for actors that transform an input stream into an output stream.
Triangular	Produce a random sequence with a triangular distribution.
TrigFunction	Produce an output token on each firing with a value that is equal to the specified trigonometric function of the input.
TriggeredClock	This actor is an extension of Clock with a start and stop input.
TypeTest	An actor that can be used for regression test of the type resolution system.
UnaryMathFunction	Produce an output token on each firing with a value that is equal to the specified math function of the input.
Uniform	Produce a random sequence with a uniform distribution.
UnionDisassembler	On each firing, read one UnionToken from the input port and send out the value to the output port that matches the label name of the input token.
URLDirectoryReader	Deprecated. Use DirectoryListing instead.
URLReader	This actor reads tokens from an URL, and output them.
VariableClock	Deprecated. Use Clock instead.
VariableSleep	An actor that calls Thread.sleep() on the current thread the first time fire() is called.
VectorAssembler	On each firing, read exactly one token from each channel of the input port and assemble the tokens into a DoubleMatrixToken with one column.
VectorDisassembler	An actor that disassembles a DoubleMatrixToken to a multiport output.
WallClockTime	Upon firing, this actor outputs the elapsed real time in seconds since the invocation of its initialize() method.
Writer	This actor reads tokens from any number of input channels and writes their string values to the specified writer.

Package ptolemy.actor.lib Description

Polymorphic actor classes.

Since:

Ptolemy II 0.2