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Class graph.Contour

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----graph.Graph2D
                           |
                           +----graph.G2Dint
                                   |
                                   +----graph.Contour

public class Contour

extends G2Dint

Version:

1.11, 1996/08/12 23:37:08.

Author:

Leigh Brookshaw

autoLabels

If true the labels will be calculated for each contour level.

autoLevels

If set the class calculates the contour levels based on the data minimum and maximum.

contourColor

Color to draw non labelled contour line

curves

Vector array containing the Contour curves.

drawlabels

If false labels are not drawn

grid

The data grid, a 2D array stored in linear form.

gridLimits

labelcolor

Color to use in drawing Labels

labelfont

Font to use in drawing Labels

labelledColor

Color to draw labelled contour line

labelLevels

Which levels will get labels.

labelPrecision

Precision to use in drawing Labels.

labels

The label for each contour level

labelSignificant

Number of Significant figures to use in drawing Labels.

labelStyle

Style to use in drawing Labels.

levels

logLevels

noContours

Boolean value if true Contours will not be calculated

nx

Dimension of the contour grid in the X direction

ny

Dimension of the contour grid in the Y direction

xmax

The X maximum limit of the data grid

xmin

The X minimum limit of the data grid

ymax

The Y maximum limit of the data grid

ymin

The Y minimum limit of the data grid

zmax

The maximum value of the grid values

zmin

The minimum value of the grid values

Contour()

Instantaite the class

attachContours()

Attach contours so that they will be plotted.

calculateCurves()

deleteContours()

Delete all the Contours

detachContours()

Detach contours so that they will not be plotted.

getDim()

return the dimensions of the grid

getGrid()

Return the grid

getLabelPrecision()

Get the label precision.

getLabelSignificance()

Get the number of significant figures for labels.

getLabelStyle()

Get the label style, either TextLine.SCIENTIFIC or TextLine.ALGEBRAIC.

getLevels()

Return the contour levels.

getRange()

Return the range of the grid

keyDown(Event, int)

Add extra events to the G2Dint event handler.

loadGrid(URL)

Load the grid to contour from a URL.

paintFirst(Graphics, Rectangle)

A hook into the Graph2D.paint method.

paintLast(Graphics, Rectangle)

A hook into the Graph2D.paint method.

setAutoLevels(boolean)

If true contour levels are calculated automatically.

setContourColor(Color)

Set the contour's color.

setDrawLabels(boolean)

If true contour levels are not labeled.

setGrid(double[], int, int)

Set the grid to be contoured.

setLabelColor(Color)

Set the Color to be used with all the labels.

setLabelFont(Font)

Set the font to be used with All the labels

setLabelledContourColor(Color)

Set the labelled contour's color.

setLabelLevels(int)

Set the contour levels that are to have labels.

setLabelPrecision(int)

Set the label precision.

setLabels(TextLine[], int)

Manually set the Contour labels.

setLabelSignificance(int)

Set the label significant figures.

setLabelStyle(int)

Set the label style, either TextLine.SCIENTIFIC or TextLine.ALGEBRAIC.

setLevels(double[], int)

Manually set the contour levels.

setLimitsToGrid(boolean)

If true the limits of the plot will be the grid limits.

setLogLevels(boolean)

If true contour levels are calculated on a log scale.

setNLevels(int)

Set the number of contour levels.

setRange(double, double, double, double)

Set the range of the grid

  protected int nx

Dimension of the contour grid in the X direction

  protected int ny

Dimension of the contour grid in the Y direction

  protected Vector curves[]

Vector array containing the Contour curves. Each index in the array contains curves at a given contour level

  protected boolean autoLevels

If set the class calculates the contour levels based on the data minimum and maximum. Default value true.

  protected boolean logLevels

  protected boolean gridLimits

  protected double levels[]

  protected TextLine labels[]

The label for each contour level

  protected Font labelfont

Font to use in drawing Labels

  protected Color labelcolor

Color to use in drawing Labels

  protected int labelStyle

Style to use in drawing Labels. TextLine.SCIENTIFIC or TextLine.ALGEBRAIC.

  protected int labelPrecision

Precision to use in drawing Labels.

  protected int labelSignificant

Number of Significant figures to use in drawing Labels.

  protected int labelLevels

Which levels will get labels. If it is equal to 1 every level gets a label, equal to 2 every second level etc. If it is equal to 0 no labels are displayed.

  protected boolean drawlabels

If false labels are not drawn

  protected boolean autoLabels

If true the labels will be calculated for each contour level. These might not look all that hot.

  protected Color contourColor

Color to draw non labelled contour line

  protected Color labelledColor

Color to draw labelled contour line

  protected double grid[]

The data grid, a 2D array stored in linear form. It is assumed that [0,0] is the bottom left corner and the data is ordered by row.

  protected double xmin

The X minimum limit of the data grid

  protected double xmax

The X maximum limit of the data grid

  protected double ymin

The Y minimum limit of the data grid

  protected double ymax

The Y maximum limit of the data grid

  protected double zmin

The minimum value of the grid values

  protected double zmax

The maximum value of the grid values

  public boolean noContours

Boolean value if true Contours will not be calculated

  public Contour()

Instantaite the class

  public boolean loadGrid(URL file)

Load the grid to contour from a URL. There are 2 formats for the data optionally the limits of the grid can be parsed.

 The expected format of the data 
          1st Number:   nx
          2nd Number:   ny
          nx*ny numbers following
 Optionally
          1st Number:   nx
          2nd Number:   ny
          3rd Number:   xmin
          4th Number:   xmax
          5th Number:   ymin
          6th Number:   ymax
          nx*ny numbers following
 

If xmin, xmax, ymin, ymax are not specified they are assumed to be [1.0,nx,1.0,ny]

Parameters:

file - URL of the file to load

Returns:

true of the load was successful.

  public void setRange(double xmin,
                       double xmax,
                       double ymin,
                       double ymax)

Set the range of the grid

Parameters:

xmin - Minimum X value

xmax - Maximum X value

ymin - Minimum Y value

ymax - Maximum Y value

  public double[] getRange()

Return the range of the grid

Returns:

An array contining xmin,xmax,ymin,ymax.

  public int[] getDim()

return the dimensions of the grid

Returns:

An array containing the number of columns, number of rows.

  public double[] getGrid()

Return the grid

Returns:

An array of size nx by ny contining the data grid.

  public void setLevels(double levels[],
                        int nl)

Manually set the contour levels.

Parameters:

levels - An array containing the contour levels

nl - The number of contour levels in the arrray

  public void setLabels(TextLine labels[],
                        int nl)

Manually set the Contour labels.

Parameters:

labels - An array containing the labels.

nl - Number of labels in the Array.

  public void setLabelFont(Font f)

Set the font to be used with All the labels

Parameters:

f - Font

  public void setLabelColor(Color c)

Set the Color to be used with all the labels.

Parameters:

c - Color

  public void setGrid(double grid[],
                      int nx,
                      int ny)

Set the grid to be contoured.

Parameters:

grid - Array of values

nx - Number of columns

ny - Number of rows

  public void deleteContours()

Delete all the Contours

  public void detachContours()

Detach contours so that they will not be plotted.

  public void attachContours()

Attach contours so that they will be plotted.

  public void setContourColor(Color c)

Set the contour's color.

Parameters:

c - Color

  public void setLabelledContourColor(Color c)

Set the labelled contour's color.

Parameters:

c - Color

  public double[] getLevels()

Return the contour levels.

Returns:

An array containing the contour levels

  public void setLimitsToGrid(boolean b)

If true the limits of the plot will be the grid limits. If false the limits of the plot will be the contours.

Parameters:

b - boolean

  public void setLabelLevels(int i)

Set the contour levels that are to have labels.

   if 0 no labels are drawn
   if 1 every level gets a label
   If 2 every 2nd level gets a label
   etc.

  public void setLogLevels(boolean b)

If true contour levels are calculated on a log scale.

Parameters:

b - boolean

  public void setNLevels(int l)

Set the number of contour levels.

  public void setAutoLevels(boolean b)

If true contour levels are calculated automatically.

Parameters:

b - boolean

  public void setDrawLabels(boolean b)

If true contour levels are not labeled.

Parameters:

b - boolean

  public void setLabelStyle(int s)

Set the label style, either TextLine.SCIENTIFIC or TextLine.ALGEBRAIC.

Parameters:

s - Style

  public int getLabelStyle()

Get the label style, either TextLine.SCIENTIFIC or TextLine.ALGEBRAIC.

Returns:

style

  public void setLabelPrecision(int p)

Set the label precision.

Parameters:

s - Precision

  public int getLabelPrecision()

Get the label precision.

Returns:

precision

  public void setLabelSignificance(int s)

Set the label significant figures.

Parameters:

s - number of significant figures

  public int getLabelSignificance()

Get the number of significant figures for labels.

Returns:

number of significant figures

  public boolean keyDown(Event e,
                         int key)

Add extra events to the G2Dint event handler. If 'l' is pressed repaint without the labels If 'L' is pressed repaint with the labels.

Overrides:

keyDown in class G2Dint

  public void paintFirst(Graphics g,
                         Rectangle r)

A hook into the Graph2D.paint method.

Overrides:

paintFirst in class Graph2D

  public void paintLast(Graphics g,
                        Rectangle rect)

A hook into the Graph2D.paint method.

Overrides:

paintLast in class Graph2D

  protected void calculateCurves()

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