: Class Plot

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ptolemy.plot
Class Plot

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--ptolemy.plot.PlotBox
                          |
                          +--ptolemy.plot.Plot

Direct Known Subclasses:: EditablePlot, PlotLive

public class Plot
extends PlotBox

A flexible signal plotter. The plot can be configured and data can be provided either through a file with commands or through direct invocation of the public methods of the class.

When calling the public methods, in most cases the changes will not be visible until paint() is called. To request that this be done, call repaint(). One exception is addPoint(), which makes the new point visible immediately if the plot is visible on the screen.

This base class supports a simple file syntax that has largely been replaced by the XML-based PlotML syntax. To read a file or a URL in this older syntax, use the read() method. This older syntax contains any number commands, one per line. Unrecognized commands and commands with syntax errors are ignored. Comments are denoted by a line starting with a pound sign "#". The recognized commands include those supported by the base class, plus a few more. The commands are case insensitive, but are usually capitalized. The number of data sets to be plotted does not need to be specified. Data sets are added as needed. Each dataset can be optionally identified with color (see the base class) or with unique marks. The style of marks used to denote a data point is defined by one of the following commands:

 Marks: none
 Marks: points
 Marks: dots
 Marks: various

Here, "points" are small dots, while "dots" are larger. If "various" is specified, then unique marks are used for the first ten data sets, and then recycled. Using no marks is useful when lines connect the points in a plot, which is done by default. If the above directive appears before any DataSet directive, then it specifies the default for all data sets. If it appears after a DataSet directive, then it applies only to that data set.

To disable connecting lines, use:

 Lines: off

To reenable them, use

 Lines: on

You can also specify "impulses", which are lines drawn from a plotted point down to the x axis. Plots with impulses are often called "stem plots." These are off by default, but can be turned on with the command:

 Impulses: on

or back off with the command

 Impulses: off

If that command appears before any DataSet directive, then the command applies to all data sets. Otherwise, it applies only to the current data set. To create a bar graph, turn off lines and use any of the following commands:

 Bars: on
 Bars: width
 Bars: width, offset

The width is a real number specifying the width of the bars in the units of the x axis. The offset is a real number specifying how much the bar of the i < /i>^th data set is offset from the previous one. This allows bars to "peek out" from behind the ones in front. Note that the frontmost data set will be the first one. To turn off bars, use
Bars: off
To specify data to be plotted, start a data set with the following command:
DataSet: string
Here, string is a label that will appear in the legend. It is not necessary to enclose the string in quotation marks. To start a new dataset without giving it a name, use:
DataSet:
In this case, no item will appear in the legend. New datasets are plotted behind the previous ones. If the following directive occurs:
ReuseDataSets: on
Then datasets with the same name will be merged. This makes it easier to combine multiple datafiles that contain the same datasets into one file. By default, this capability is turned off, so datasets with the same name are not merged. The data itself is given by a sequence of commands with one of the following forms:
x, y draw: x, y move: x, y x, y, yLowErrorBar, yHighErrorBar draw: x, y, yLowErrorBar, yHighErrorBar move: x, y, yLowErrorBar, yHighErrorBar
The "draw" command is optional, so the first two forms are equivalent. The "move" command causes a break in connected points, if lines are being drawn between points. The numbers x and y are arbitrary numbers as supported by the Double parser in Java. If there are four numbers, then the last two numbers are assumed to be the lower and upper values for error bars. The numbers can be separated by commas, spaces or tabs.
This plotter has some limitations:

If you zoom in far enough, the plot becomes unreliable. In particular, if the total extent of the plot is more than 2³² times extent of the visible area, quantization errors can result in displaying points or lines. Note that 2³² is over 4 billion.
The limitations of the log axis facility are listed in the _gridInit() method in the PlotBox class.

Version:
$Id: Plot.java,v 1.155 1999/08/19 15:36:05 cxh Exp $

Author:
Edward A. Lee, Christopher Hylands

See Also:
Serialized Form

Inner classes inherited from class ptolemy.plot.PlotBox

PlotBox.DragListener, PlotBox.ZoomListener

Field Summary

protected int _currentdataset


protected int _marks


protected boolean _painted


protected java.util.Vector _points


Fields inherited from class ptolemy.plot.PlotBox

_background, _bottomPadding, _colors, _documentBase, _foreground, _grid, _height, _leftPadding, _LOG10SCALE, _lrx, _lry, _PADDING, _rangesGivenByZooming, _rightPadding, _topPadding, _ulx, _uly, _usecolor, _width, _wrap, _xBottom, _xhighgiven, _xlog, _xlowgiven, _xMax, _xMin, _xRangeGiven, _xscale, _xTop, _yBottom, _yhighgiven, _ylog, _ylowgiven, _yMax, _yMin, _yRangeGiven, _yscale, _yTop

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Constructor Summary

Plot()


Method Summary

protected void _checkDatasetIndex(int dataset)
          Check the argument to ensure that it is a valid data set index.

protected void _drawBar(java.awt.Graphics graphics, int dataset, long xpos, long ypos, boolean clip)
          Draw bar from the specified point to the y axis.

protected void _drawErrorBar(java.awt.Graphics graphics, int dataset, long xpos, long yLowEBPos, long yHighEBPos, boolean clip)
          Draw an error bar for the specified yLowEB and yHighEB values.

protected void _drawImpulse(java.awt.Graphics graphics, long xpos, long ypos, boolean clip)
          Draw a line from the specified point to the y axis.

protected void _drawLine(java.awt.Graphics graphics, int dataset, long startx, long starty, long endx, long endy, boolean clip)
          Draw a line from the specified starting point to the specified ending point.

protected void _drawPlot(java.awt.Graphics graphics, boolean clearfirst)
          Draw the axes and then plot all points.

protected void _drawPoint(java.awt.Graphics graphics, int dataset, long xpos, long ypos, boolean clip)
          Put a mark corresponding to the specified dataset at the specified x and y position.

protected boolean _parseLine(java.lang.String line)
          Parse a line that gives plotting information.

protected void _write(java.io.PrintWriter output)
          Write plot information to the specified output stream in PlotML, an XML extension.

protected void _writeOldSyntax(java.io.PrintWriter output)
          Deprecated.

void addLegend(int dataset, java.lang.String legend)
          Add a legend (displayed at the upper right) for the specified data set with the specified string.

void addPoint(int dataset, double x, double y, boolean connected)
          In the specified data set, add the specified x, y point to the plot.

void addPointWithErrorBars(int dataset, double x, double y, double yLowEB, double yHighEB, boolean connected)
          In the specified data set, add the specified x, y point to the plot with error bars.

void clear(boolean format)
          Clear the plot of all data points.

void clear(int dataset)
          Clear the plot of data points in the specified dataset.

void erasePoint(int dataset, int index)
          Erase the point at the given index in the given dataset.

void fillPlot()
          Rescale so that the data that is currently plotted just fits.

boolean getConnected()
          Return whether the default is to connect subsequent points with a line.

boolean getImpulses()
          Return whether a line will be drawn from any plotted point down to the x axis.

java.lang.String getMarksStyle()
          Get the marks style, which is one of "none", "points", "dots", or "various".

int getMaxDataSets()
          Deprecated.

int getNumDataSets()
          Return the actual number of data sets.

void parseFile(java.lang.String filespec, java.net.URL documentBase)
          Deprecated.

void read(java.io.InputStream in)
          Read a file with the old syntax (non-XML).

void samplePlot()
          Create a sample plot.

void setBars(boolean on)
          Turn bars on or off (for bar charts).

void setBars(double width, double offset)
          Turn bars on and set the width and offset.

void setConnected(boolean on)
          If the argument is true, then the default is to connect subsequent points with a line.

void setConnected(boolean on, int dataset)
          If the first argument is true, then by default for the specified dataset, points will be connected by a line.

void setImpulses(boolean on)
          If the argument is true, then a line will be drawn from any plotted point down to the x axis.

void setImpulses(boolean on, int dataset)
          If the first argument is true, then a line will be drawn from any plotted point in the specified dataset down to the x axis.

void setMarksStyle(java.lang.String style)
          Set the marks style to "none", "points", "dots", or "various".

void setMarksStyle(java.lang.String style, int dataset)
          Set the marks style to "none", "points", "dots", or "various" for the specified dataset.

void setNumSets(int numsets)
          Deprecated.

void setPointsPersistence(int persistence)
          Calling this method with a positive argument sets the persistence of the plot to the given number of points.

void setReuseDatasets(boolean on)
          If the argument is true, then datasets with the same name are merged into a single dataset.

void setSweepsPersistence(int persistence)
          A sweep is a sequence of points where the value of X is increasing.

Methods inherited from class ptolemy.plot.PlotBox

_help, _setButtonsVisibility, addXTick, addYTick, export, getColor, getColorByName, getDataurl, getDocumentBase, getGrid, getLegend, getMinimumSize, getPreferredSize, getTitle, getXLabel, getXLog, getXRange, getXTicks, getYLabel, getYLog, getYRange, getYTicks, init, paint, parseFile, read, setBackground, setBounds, setButtons, setColor, setDataurl, setDocumentBase, setForeground, setGrid, setLabelFont, setSize, setTitle, setTitleFont, setWrap, setXLabel, setXLog, setXRange, setYLabel, setYLog, setYRange, update, write, write, writeOldSyntax, zoom

Methods inherited from class java.awt.Panel

addNotify

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getInsets, getLayout, getMaximumSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFont, setLayout, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, resize, resize, setBounds, setComponentOrientation, setDropTarget, setEnabled, setLocale, setLocation, setLocation, setName, setSize, setVisible, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

_currentdataset

protected int _currentdataset

_points

protected java.util.Vector _points

_marks

protected int _marks

_painted

protected boolean _painted

Constructor Detail

Plot

public Plot()

Method Detail

addLegend

public void addLegend(int dataset, java.lang.String legend)

Add a legend (displayed at the upper right) for the specified data set with the specified string. Short strings generally fit better than long strings.

Overrides:
addLegend in class PlotBox

Parameters:
dataset - The dataset index.
legend - The label for the dataset.

addPoint

public void addPoint(int dataset, double x, double y, boolean connected)

In the specified data set, add the specified x, y point to the plot. Data set indices begin with zero. If the data set does not exist, create it. The fourth argument indicates whether the point should be connected by a line to the previous point. Regardless of the value of this argument, a line will not drawn if either there has been no previous point for this dataset or setConnected() has been called with a false argument. The new point will be made visible if the plot is visible on the screen. Otherwise, it will be drawn the next time the plot is drawn on the screen.

Parameters:
dataset - The data set index.
x - The X position of the new point.
y - The Y position of the new point.
connected - If true, a line is drawn to connect to the previous point.

addPointWithErrorBars

public void addPointWithErrorBars(int dataset, double x, double y, double yLowEB, double yHighEB, boolean connected)

In the specified data set, add the specified x, y point to the plot with error bars. Data set indices begin with zero. If the dataset does not exist, create it. yLowEB and yHighEB are the lower and upper error bars. The sixth argument indicates whether the point should be connected by a line to the previous point. The new point will be made visible if the plot is visible on the screen. Otherwise, it will be drawn the next time the plot is drawn on the screen. This method is based on a suggestion by Michael Altmann .

Parameters:
dataset - The data set index.
x - The X position of the new point.
y - The Y position of the new point.
yLowEB - The low point of the error bar.
yHighEB - The high point of the error bar.
connected - If true, a line is drawn to connect to the previous point.

clear

public void clear(boolean format)

Clear the plot of all data points. If the argument is true, then reset all parameters to their initial conditions, including the persistence, plotting format, and axes formats. For the change to take effect, you must call repaint().

Overrides:
clear in class PlotBox

Parameters:
format - If true, clear the format controls as well.

clear

public void clear(int dataset)

Clear the plot of data points in the specified dataset. This calls repaint() to request an update of the display.

Parameters:
dataset - The dataset to clear.

erasePoint

public void erasePoint(int dataset, int index)

Erase the point at the given index in the given dataset. If lines are being drawn, also erase the line to the next points (note: not to the previous point). The point is not checked to see whether it is in range, so care must be taken by the caller to ensure that it is. The change will be made visible if the plot is visible on the screen. Otherwise, it will take effect the next time the plot is drawn on the screen.

Parameters:
dataset - The data set index.
index - The index of the point to erase.

fillPlot

public void fillPlot()

Rescale so that the data that is currently plotted just fits. This overrides the base class method to ensure that the protected variables _xBottom, _xTop, _yBottom, and _yTop are valid. This method calls repaint(), which eventually causes the display to be updated.

Overrides:
fillPlot in class PlotBox

getConnected

public boolean getConnected()

Return whether the default is to connect subsequent points with a line. If the result is false, then points are not connected. When points are by default connected, individual points can be not connected by giving the appropriate argument to addPoint(). Also, a different default can be set for each dataset, overriding this global default.

getImpulses

public boolean getImpulses()

Return whether a line will be drawn from any plotted point down to the x axis. A plot with such lines is also known as a stem plot.

Parameters:
on - If true, draw a stem plot.

getMarksStyle

public java.lang.String getMarksStyle()

Get the marks style, which is one of "none", "points", "dots", or "various".

Returns:
A string specifying the style for points.

getMaxDataSets

public int getMaxDataSets()

Deprecated.

Return the maximum number of data sets. This method is deprecated, since there is no longer an upper bound.

getNumDataSets

public int getNumDataSets()

Return the actual number of data sets.

Returns:
The number of data sets that have been created.

parseFile

public void parseFile(java.lang.String filespec, java.net.URL documentBase)

Deprecated.

Override the base class to indicate that a new data set is being read. This method is deprecated. Use read() instead (to read the old file format) or one of the classes in the plotml package to read the new (XML) file format.

Overrides:
parseFile in class PlotBox

read

public void read(java.io.InputStream in) throws java.io.IOException

Read a file with the old syntax (non-XML). Override the base class to register that we are reading a new data set.

Overrides:
read in class PlotBox

Parameters:
inputstream - The input stream.
Throws:
java.io.IOException - If the stream cannot be read.

samplePlot

public void samplePlot()

Create a sample plot.

Overrides:
samplePlot in class PlotBox

setBars

public void setBars(boolean on)

Turn bars on or off (for bar charts).

Parameters:
on - If true, turn bars on.

setBars

public void setBars(double width, double offset)

Turn bars on and set the width and offset. Both are specified in units of the x axis. The offset is the amount by which the i < sup>th data set is shifted to the right, so that it peeks out from behind the earlier data sets.

Parameters:
width - The width of the bars.
offset - The offset per data set.

setConnected

public void setConnected(boolean on)

If the argument is true, then the default is to connect subsequent points with a line. If the argument is false, then points are not connected. When points are by default connected, individual points can be not connected by giving the appropriate argument to addPoint(). Also, a different default can be set for each dataset, overriding this global default.

setConnected

public void setConnected(boolean on, int dataset)

If the first argument is true, then by default for the specified dataset, points will be connected by a line. Otherwise, the points will not be connected. When points are by default connected, individual points can be not connected by giving the appropriate argument to addPoint().

Parameters:
on - If true, draw lines between points.
dataset - The dataset to which this should apply.

setImpulses

public void setImpulses(boolean on)

If the argument is true, then a line will be drawn from any plotted point down to the x axis. Otherwise, this feature is disabled. A plot with such lines is also known as a stem plot.

Parameters:
on - If true, draw a stem plot.

setImpulses

public void setImpulses(boolean on, int dataset)

If the first argument is true, then a line will be drawn from any plotted point in the specified dataset down to the x axis. Otherwise, this feature is disabled. A plot with such lines is also known as a stem plot.

Parameters:
on - If true, draw a stem plot.
dataset - The dataset to which this should apply.

setMarksStyle

public void setMarksStyle(java.lang.String style)

Set the marks style to "none", "points", "dots", or "various". In the last case, unique marks are used for the first ten data sets, then recycled.

Parameters:
style - A string specifying the style for points.

setMarksStyle

public void setMarksStyle(java.lang.String style, int dataset)

Set the marks style to "none", "points", "dots", or "various" for the specified dataset. In the last case, unique marks are used for the first ten data sets, then recycled.

Parameters:
style - A string specifying the style for points.
dataset - The dataset to which this should apply.

setNumSets

public void setNumSets(int numsets)

Deprecated.

Specify the number of data sets to be plotted together. This method is deprecated, since it is no longer necessary to specify the number of data sets ahead of time. It has the effect of clearing all previously plotted points. This method should be called before setPointsPersistence(). This method throws IllegalArgumentException if the number is less than 1. This is a runtime exception, so it need not be declared.

Parameters:
numsets - The number of data sets.

setPointsPersistence

public void setPointsPersistence(int persistence)

Calling this method with a positive argument sets the persistence of the plot to the given number of points. Calling with a zero argument turns off this feature, reverting to infinite memory (unless sweeps persistence is set). If both sweeps and points persistence are set then sweeps take precedence.

setReuseDatasets

public void setReuseDatasets(boolean on)

If the argument is true, then datasets with the same name are merged into a single dataset.

Parameters:
on - If true, then merge datasets.

setSweepsPersistence

public void setSweepsPersistence(int persistence)

A sweep is a sequence of points where the value of X is increasing. A point that is added with a smaller x than the previous point increments the sweep count. Calling this method with a non-zero argument sets the persistence of the plot to the given number of sweeps. Calling with a zero argument turns off this feature. If both sweeps and points persistence are set then sweeps take precedence. This feature is not implemented yet, so this method has no effect.

_checkDatasetIndex

protected void _checkDatasetIndex(int dataset)

Check the argument to ensure that it is a valid data set index. If it is less than zero, throw an IllegalArgumentException (which is a runtime exception). If it does not refer to an existing data set, then fill out the _points Vector so that it does refer to an existing data set. All other dataset-related vectors are similarly filled out.

Parameters:
dataset - The data set index.

_drawBar

protected void _drawBar(java.awt.Graphics graphics, int dataset, long xpos, long ypos, boolean clip)

Draw bar from the specified point to the y axis. If the specified point is below the y axis or outside the x range, do nothing. If the clip argument is true, then do not draw above the y range. Note that paint() should be called before calling this method so that _xscale and _yscale are properly set.

Parameters:
graphics - The graphics context.
dataset - The index of the dataset.
xpos - The x position.
ypos - The y position.
clip - If true, then do not draw outside the range.

_drawErrorBar

protected void _drawErrorBar(java.awt.Graphics graphics, int dataset, long xpos, long yLowEBPos, long yHighEBPos, boolean clip)

Draw an error bar for the specified yLowEB and yHighEB values. If the specified point is below the y axis or outside the x range, do nothing. If the clip argument is true, then do not draw above the y range.

Parameters:
graphics - The graphics context.
dataset - The index of the dataset.
xpos - The x position.
yLowEBPos - The lower y position of the error bar.
yHighEBPos - The upper y position of the error bar.
clip - If true, then do not draw above the range.

_drawImpulse

protected void _drawImpulse(java.awt.Graphics graphics, long xpos, long ypos, boolean clip)

Draw a line from the specified point to the y axis. If the specified point is below the y axis or outside the x range, do nothing. If the clip argument is true, then do not draw above the y range.

Parameters:
graphics - The graphics context.
xpos - The x position.
ypos - The y position.
clip - If true, then do not draw outside the range.

_drawLine

protected void _drawLine(java.awt.Graphics graphics, int dataset, long startx, long starty, long endx, long endy, boolean clip)

Draw a line from the specified starting point to the specified ending point. The current color is used. If the clip argument is true, then draw only that portion of the line that lies within the plotting rectangle.

Parameters:
graphics - The graphics context.
dataset - The index of the dataset.
startx - The starting x position.
starty - The starting y position.
endx - The ending x position.
endy - The ending y position.
clip - If true, then do not draw outside the range.

_drawPlot

protected void _drawPlot(java.awt.Graphics graphics, boolean clearfirst)

Draw the axes and then plot all points. This is synchronized to prevent multiple threads from drawing the plot at the same time. It sets _painted true and calls notifyAll() at the end so that a thread can use wait() to prevent it plotting points before the axes have been first drawn. If the second argument is true, clear the display first. This method is called by paint(). To cause it to be called you would normally call repaint(), which eventually causes paint() to be called.

Overrides:
_drawPlot in class PlotBox

Parameters:
graphics - The graphics context.
clearfirst - If true, clear the plot before proceeding.

_drawPoint

protected void _drawPoint(java.awt.Graphics graphics, int dataset, long xpos, long ypos, boolean clip)

Put a mark corresponding to the specified dataset at the specified x and y position. The mark is drawn in the current color. What kind of mark is drawn depends on the _marks variable and the dataset argument. If the fourth argument is true, then check the range and plot only points that are in range.

Overrides:
_drawPoint in class PlotBox

Parameters:
graphics - The graphics context.
dataset - The index of the dataset.
xpos - The x position.
ypos - The y position.
clip - If true, then do not draw outside the range.

_parseLine

protected boolean _parseLine(java.lang.String line)

Parse a line that gives plotting information. Return true if the line is recognized. Lines with syntax errors are ignored.

Overrides:
_parseLine in class PlotBox

Parameters:
line - A command line.
Returns:
True if the line is recognized.

_write

protected void _write(java.io.PrintWriter output)

Write plot information to the specified output stream in PlotML, an XML extension. Derived classes should override this method to first call the parent class method, then add whatever additional information they wish to add to the stream.

Overrides:
_write in class PlotBox

Parameters:
output - A buffered print writer.

_writeOldSyntax

protected void _writeOldSyntax(java.io.PrintWriter output)

Deprecated.

Write plot information to the specified output stream in the "old syntax," which predates PlotML. Derived classes should override this method to first call the parent class method, then add whatever additional information they wish to add to the stream.

Overrides:
_writeOldSyntax in class PlotBox

Parameters:
output - A buffered print writer.

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Field Summary
`protected int`	`_currentdataset`
`protected int`	`_marks`
`protected boolean`	`_painted`
`protected java.util.Vector`	`_points`

Method Summary
`protected void`	`_checkDatasetIndex(int dataset)` Check the argument to ensure that it is a valid data set index.
`protected void`	`_drawBar(java.awt.Graphics graphics, int dataset, long xpos, long ypos, boolean clip)` Draw bar from the specified point to the y axis.
`protected void`	`_drawErrorBar(java.awt.Graphics graphics, int dataset, long xpos, long yLowEBPos, long yHighEBPos, boolean clip)` Draw an error bar for the specified yLowEB and yHighEB values.
`protected void`	`_drawImpulse(java.awt.Graphics graphics, long xpos, long ypos, boolean clip)` Draw a line from the specified point to the y axis.
`protected void`	`_drawLine(java.awt.Graphics graphics, int dataset, long startx, long starty, long endx, long endy, boolean clip)` Draw a line from the specified starting point to the specified ending point.
`protected void`	`_drawPlot(java.awt.Graphics graphics, boolean clearfirst)` Draw the axes and then plot all points.
`protected void`	`_drawPoint(java.awt.Graphics graphics, int dataset, long xpos, long ypos, boolean clip)` Put a mark corresponding to the specified dataset at the specified x and y position.
`protected boolean`	`_parseLine(java.lang.String line)` Parse a line that gives plotting information.
`protected void`	`_write(java.io.PrintWriter output)` Write plot information to the specified output stream in PlotML, an XML extension.
`protected void`	`_writeOldSyntax(java.io.PrintWriter output)` Deprecated.
`void`	`addLegend(int dataset, java.lang.String legend)` Add a legend (displayed at the upper right) for the specified data set with the specified string.
`void`	`addPoint(int dataset, double x, double y, boolean connected)` In the specified data set, add the specified x, y point to the plot.
`void`	`addPointWithErrorBars(int dataset, double x, double y, double yLowEB, double yHighEB, boolean connected)` In the specified data set, add the specified x, y point to the plot with error bars.
`void`	`clear(boolean format)` Clear the plot of all data points.
`void`	`clear(int dataset)` Clear the plot of data points in the specified dataset.
`void`	`erasePoint(int dataset, int index)` Erase the point at the given index in the given dataset.
`void`	`fillPlot()` Rescale so that the data that is currently plotted just fits.
`boolean`	`getConnected()` Return whether the default is to connect subsequent points with a line.
`boolean`	`getImpulses()` Return whether a line will be drawn from any plotted point down to the x axis.
`java.lang.String`	`getMarksStyle()` Get the marks style, which is one of "none", "points", "dots", or "various".
`int`	`getMaxDataSets()` Deprecated.
`int`	`getNumDataSets()` Return the actual number of data sets.
`void`	`parseFile(java.lang.String filespec, java.net.URL documentBase)` Deprecated.
`void`	`read(java.io.InputStream in)` Read a file with the old syntax (non-XML).
`void`	`samplePlot()` Create a sample plot.
`void`	`setBars(boolean on)` Turn bars on or off (for bar charts).
`void`	`setBars(double width, double offset)` Turn bars on and set the width and offset.
`void`	`setConnected(boolean on)` If the argument is true, then the default is to connect subsequent points with a line.
`void`	`setConnected(boolean on, int dataset)` If the first argument is true, then by default for the specified dataset, points will be connected by a line.
`void`	`setImpulses(boolean on)` If the argument is true, then a line will be drawn from any plotted point down to the x axis.
`void`	`setImpulses(boolean on, int dataset)` If the first argument is true, then a line will be drawn from any plotted point in the specified dataset down to the x axis.
`void`	`setMarksStyle(java.lang.String style)` Set the marks style to "none", "points", "dots", or "various".
`void`	`setMarksStyle(java.lang.String style, int dataset)` Set the marks style to "none", "points", "dots", or "various" for the specified dataset.
`void`	`setNumSets(int numsets)` Deprecated.
`void`	`setPointsPersistence(int persistence)` Calling this method with a positive argument sets the persistence of the plot to the given number of points.
`void`	`setReuseDatasets(boolean on)` If the argument is true, then datasets with the same name are merged into a single dataset.
`void`	`setSweepsPersistence(int persistence)` A sweep is a sequence of points where the value of X is increasing.

ptolemy.plot Class Plot

_currentdataset

_points

_marks

_painted

Plot

addLegend

addPoint

addPointWithErrorBars

clear

clear

erasePoint

fillPlot

getConnected

getImpulses

getMarksStyle

getMaxDataSets

getNumDataSets

parseFile

read

samplePlot

setBars

setBars

setConnected

setConnected

setImpulses

setImpulses

setMarksStyle

setMarksStyle

setNumSets

setPointsPersistence

setReuseDatasets

setSweepsPersistence

_checkDatasetIndex

_drawBar

_drawErrorBar

_drawImpulse

_drawLine

_drawPlot

_drawPoint

_parseLine

_write

_writeOldSyntax

ptolemy.plot
Class Plot