Examples of ptolemy.data.ArrayToken

ptolemy.data.ArrayToken
A token that contains an array of tokens. The operations between arrays are defined pointwise, and require that the lengths of the arrays are the same. The elements of the ArrayToken will be converted to the least upper bound of their input types. Zero length array tokens are supported, given a prototype element to determine the type of the array. @author Yuhong Xiong, Steve Neuendorffer, Contributor: Christopher Brooks @version $Id: ArrayToken.java,v 1.119 2007/12/07 06:31:43 cxh Exp $ @since Ptolemy II 0.4 @Pt.ProposedRating Yellow (cxh) @Pt.AcceptedRating Red (cxh) nil token code

        }
        int outputWidth = 0;
        Token[][] inputs = new Token[width][];
        for (int i = 0; i < width; i++) {
            if (input.hasToken(i)) {
                ArrayToken token = (ArrayToken) input.get(i);
                inputs[i] = token.arrayValue();
                outputWidth += inputs[i].length;
            }
        }
        Token[] array = new Token[outputWidth];
        int runningPosition = 0;
        for (int i = 0; i < width; i++) {
            System.arraycopy(inputs[i], 0, array, runningPosition,
                    inputs[i].length);
            runningPosition += inputs[i].length;
        }
        Type elementType = ((ArrayType) input.getType()).getElementType();
        output.send(0, new ArrayToken(elementType, array));
    }

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     *   nondecreasing and nonnegative.
     */
    public void attributeChanged(Attribute attribute)
            throws IllegalActionException {
        if (attribute == offsets) {
            ArrayToken offsetsValue = (ArrayToken) offsets.getToken();
            _offsets = new double[offsetsValue.length()];


            double previous = 0.0;


            for (int i = 0; i < offsetsValue.length(); i++) {
                _offsets[i] = ((DoubleToken) offsetsValue.getElement(i))
                        .doubleValue();


                // Check nondecreasing property.
                if (_offsets[i] < previous) {
                    throw new IllegalActionException(this,

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     *  @exception IllegalActionException If the <i>values</i> and
     *   <i>offsets</i> parameters do not have the same length.
     */
    public boolean prefire() throws IllegalActionException {
        // FIXME: why put the check here???
        ArrayToken val = (ArrayToken) (values.getToken());


        if (_offsets.length != val.length()) {
            throw new IllegalActionException(this,
                    "Values and offsets vectors do not have the same length.");
        }


        return super.prefire();

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     *  @return A token that contains the output value.
     *  @exception IllegalActionException If the index is out of the range of
     *  the values parameter.
     */
    protected Token _getValue(int index) throws IllegalActionException {
        ArrayToken val = (ArrayToken) (values.getToken());


        if ((val == null) || (val.length() <= index)) {
            throw new IllegalActionException(this,
                    "Index out of range of the values parameter.");
        }


        return val.getElement(index);
    }

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            throws IllegalActionException, NameDuplicationException {
        super(container, name);
        output.setTypeEquals(BaseType.OBJECT);
        width = new Parameter(this, "width", new IntToken(0));
        height = new Parameter(this, "height", new IntToken(0));
        bandValues = new Parameter(this, "bandValues", new ArrayToken(
                BaseType.INT, _defaultValues));
        dataFormat = new StringAttribute(this, "dataFormat");
        dataFormat.setExpression("byte");
        _dataFormat = _BYTE;
    }

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        setBackground = new Parameter(this, "setBackground");
        setBackground.setTypeEquals(BaseType.BOOLEAN);
        setBackground.setToken(BooleanToken.FALSE);


        background = new Parameter(this, "background", new ArrayToken(
                BaseType.INT, _initialArray));
    }

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        if (!periodicValue) {
            output.send(0, _zero);
            return;
        }


        ArrayToken arrayToken = (ArrayToken) initialTrace.getToken();
        output.send(0, arrayToken.getElement(_count));
        _count++;


        if (_count == arrayToken.length()) {
            _count = 0;
            _updateInitialTrace();
        }
    }

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        _updateInitialTrace();


        // Produce the data on the output so that this can be used in
        // feedback look in dataflow models.
        ArrayToken arrayToken = (ArrayToken) initialTrace.getToken();
        output.send(0, arrayToken.arrayValue(), arrayToken.length());


        _count = 0;
    }

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            int lengthValue = ((IntToken) length.getToken()).intValue();
            ((Plot) plot).clear(0);


            boolean connected = false;
            ArrayToken defaultValues = (ArrayToken) initialTrace.getToken();


            for (int i = 0; i < lengthValue; i++) {
                double value = 0.0;


                if ((defaultValues != null) && (i < defaultValues.length())) {
                    value = ((DoubleToken) defaultValues.getElement(i))
                            .doubleValue();
                }


                ((Plot) plot).addPoint(0, i, value, connected);
                connected = true;

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                for (int i = 0; i < _data[1].length; i++) {
                    record[i] = new DoubleToken(_data[1][i]);
                }


                ArrayToken newValue = new ArrayToken(BaseType.DOUBLE, record);
                initialTrace.setToken(newValue);
            } finally {
                _dataModified = false;
            }
        }

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