Package ca.spatial.mapview

Class GradientTheme

java.lang.Object

javax.swing.table.AbstractTableModel

ca.spatial.mapview.Theme

ca.spatial.mapview.ChoroplethTheme

ca.spatial.mapview.NumericTheme

ca.spatial.mapview.GradientTheme

All Implemented Interfaces:

Visibility, EditableTableModel, Serializable, Comparator, TableModel

public class GradientTheme
extends NumericTheme

The GradientTheme class provides a continuous color gradient rendering of values. Several stretching methods are provided to map data values to the continuous color ramp.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static int	HISTOGRAM_EQUALIZATION	Histogram equalization provides a non-linear mapping to approximate an equal number of elements in each color gradient
static int	MINIMUM_MAXIMUM	Minimum-Maximum uses a linear mapping of values from the actual range of data to fit the color ramp
static int	NONE	The NONE stretch method assumes 8-bit values in the range 0-255
static int	PERCENT_CLIP	Percent clip sets performs a linear interpolation with clipping of the low and upper percent of values
static int	RAMP_SIZE	The default number of colors used to estimate a continuous range
static int	STANDARD_DEVIATION	Standard Deviation uses a linear mapping between the lower and upper standard deviation limits.

Fields inherited from class ca.spatial.mapview.NumericTheme

ARITHMETRIC, EQUAL_AREA, EQUAL_INTERVAL, GEOMETRIC, NATURAL_BREAKS, THEMENAMES

Fields inherited from class ca.spatial.mapview.Theme

themeName

Constructor Summary

Constructors

Constructor	Description
GradientTheme()
GradientTheme(String fieldname)	Deprecated.
GradientTheme(String fieldname, String normalize)	Deprecated.

Method Summary

Modifier and Type	Method	Description
void	addElement(ThemeElement te, String keys)
void	addRow(Component comp)	Add a row to the table using default values.
void	addRow(Object[] obj)	Add a row to the table.
Object	clone()	Return a deep copy of the object as appropriate for each theme type
void	compile(Layer layer, AttributeStore store, String fieldname)	Prepare the theme for use with this layer.
void	generateSymbols(String fieldname, Window owner, int period, Layer layer)	This method causes the theme information to be recalulated on a new column.
void	generateSymbols(String fieldname, Window owner, int period, Layer layer, int method, double p1, double p2)	This method causes the theme information to be recalulated on a new column.
double	getP1()
double	getP2()
ThemeEditor	getSubEditor(Layer lle)	Retrive an editor object that will cusomtize the theme.
Symbol	getSymbol(Object key)	Get a symbol for a specific key.
void	moveRow(int from, int to)	Move the specified row to a new location
void	removeRow(int row)	Remove the row specified by the row number.
void	setClipPercent(double low, double high)
void	setMethod(int method)
void	setPalette(ColorPalette palette)	Set the color palette to be used for this theme
void	setStdDevLimits(double limit)
void	setValueAt(Object aValue, int rowIndex, int columnIndex)
void	updateKeys()

Methods inherited from class ca.spatial.mapview.NumericTheme

clone, generateSymbols, getColumnName, getDataValueAt, getIntervals, getMax, getMethod, getMin, getNDec, getNormalize, hasSelectionContext, isDynamic, resetSelectionContext, setFieldname, setIntervals, setNDec, setNormalize, setStats

Methods inherited from class ca.spatial.mapview.ChoroplethTheme

clone, compare, getColumnClass, getColumnCount, getEditor, getFieldname, getPalette, getRowCount, getSelectedSymbol, getSymbol, getSymbol, getSymbol, getSymbolCount, getUnclassified, getUseUnclassified, getValueAt, isCellEditable, reset, resetStore, setColorset, setSelectedSymbol, setUnclassified, setUseUnclassified, symbolsInitialized

Methods inherited from class ca.spatial.mapview.Theme

getAlpha, getCaption, getChipHeight, getChipWidth, getIsScaled, getMaxScale, getMinScale, getReferenceScale, getSymbolType, getThemeName, setAlpha, setCaption, setChipSize, setIsScaled, setMaxScale, setMinScale, setReferenceScale

Methods inherited from class javax.swing.table.AbstractTableModel

addTableModelListener, findColumn, fireTableCellUpdated, fireTableChanged, fireTableDataChanged, fireTableRowsDeleted, fireTableRowsInserted, fireTableRowsUpdated, fireTableStructureChanged, getListeners, getTableModelListeners, removeTableModelListener

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Methods inherited from interface javax.swing.table.TableModel

addTableModelListener, removeTableModelListener

Field Details

RAMP_SIZE

public static final int RAMP_SIZE

The default number of colors used to estimate a continuous range

See Also:

Constant Field Values

NONE

public static final int NONE

The NONE stretch method assumes 8-bit values in the range 0-255

See Also:

Constant Field Values

MINIMUM_MAXIMUM

public static final int MINIMUM_MAXIMUM

Minimum-Maximum uses a linear mapping of values from the actual range of data to fit the color ramp

See Also:

Constant Field Values

STANDARD_DEVIATION

public static final int STANDARD_DEVIATION

Standard Deviation uses a linear mapping between the lower and upper standard deviation limits.

See Also:

Constant Field Values

PERCENT_CLIP

public static final int PERCENT_CLIP

Percent clip sets performs a linear interpolation with clipping of the low and upper percent of values

See Also:

Constant Field Values

HISTOGRAM_EQUALIZATION

public static final int HISTOGRAM_EQUALIZATION

Histogram equalization provides a non-linear mapping to approximate an equal number of elements in each color gradient

See Also:

Constant Field Values

Constructor Details

GradientTheme

public GradientTheme()

GradientTheme

@Deprecated
public GradientTheme(String fieldname,
 String normalize)

Deprecated.

GradientTheme

@Deprecated
public GradientTheme(String fieldname)

Deprecated.

Method Details

getP1

public double getP1()

getP2

public double getP2()

setStdDevLimits

public void setStdDevLimits(double limit)

setClipPercent

public void setClipPercent(double low,
 double high)

setMethod

public void setMethod(int method)

Overrides:

setMethod in class NumericTheme

getSymbol

public Symbol getSymbol(Object key)

Description copied from class: Theme

Get a symbol for a specific key. This method only gets the raw symbol type, and is usually called by other methods that will take unclassified values and visibility parameters in to account.

Overrides:

getSymbol in class NumericTheme

Parameters:

key - the key value used to look up the appropriate symbol

getSubEditor

public ThemeEditor getSubEditor(Layer lle)

Description copied from class: ChoroplethTheme

Retrive an editor object that will cusomtize the theme.

Overrides:

getSubEditor in class NumericTheme

Parameters:

lle - the parent layer

setPalette

public void setPalette(ColorPalette palette)

Description copied from class: ChoroplethTheme

Set the color palette to be used for this theme

Overrides:

setPalette in class ChoroplethTheme

compile

public void compile(Layer layer,
 AttributeStore store,
 String fieldname)
             throws Exception

Description copied from class: ChoroplethTheme

Prepare the theme for use with this layer. If the theme specified a field or expression then the expression will be compiled, possibly resulting in an Exception.

This method will not change the thematic symbols. In order to automatically build a new list of symbols use the generateSymbols method of the appropriate theme.

The symbols for unclassified data values and selected features will be adjusted if the underlying feature type changes (e.g. from Polygon to Line).

Overrides:

compile in class NumericTheme

Parameters:

layer - the parent layer

store - the attribute table to compile the expression against

fieldname - the fieldname or expression to use to lookup values for this theme

Throws:

Exception

generateSymbols

public void generateSymbols(String fieldname,
 Window owner,
 int period,
 Layer layer)
                     throws Exception

This method causes the theme information to be recalulated on a new column. This involves rescanning the attribute table to determine the min and max range of the data values, and creating categories based on the classification parameters.

Overrides:

generateSymbols in class NumericTheme

Throws:

Exception

generateSymbols

public void generateSymbols(String fieldname,
 Window owner,
 int period,
 Layer layer,
 int method,
 double p1,
 double p2)
                     throws Exception

This method causes the theme information to be recalulated on a new column. This involves rescanning the attribute table to determine the min and max range of the data values, and creating categories based on the classification parameters.

Throws:

Exception

updateKeys

public void updateKeys()

Overrides:

updateKeys in class NumericTheme

clone

public Object clone()

Description copied from class: Theme

Return a deep copy of the object as appropriate for each theme type

Overrides:

clone in class NumericTheme

setValueAt

public void setValueAt(Object aValue,
 int rowIndex,
 int columnIndex)

Specified by:

setValueAt in interface TableModel

Overrides:

setValueAt in class ChoroplethTheme

addElement

public void addElement(ThemeElement te,
 String keys)

Overrides:

addElement in class ChoroplethTheme

removeRow

public void removeRow(int row)

Description copied from interface: EditableTableModel

Remove the row specified by the row number.

Specified by:

removeRow in interface EditableTableModel

Overrides:

removeRow in class ChoroplethTheme

addRow

public void addRow(Component comp)

Description copied from interface: EditableTableModel

Add a row to the table using default values. Optionally provide a reference to the parent window in case a dialog needs to be shown.

Specified by:

addRow in interface EditableTableModel

Overrides:

addRow in class ChoroplethTheme

addRow

public void addRow(Object[] obj)

Description copied from interface: EditableTableModel

Add a row to the table. The number of items in the rowData array must match the number of columns in the table.

Specified by:

addRow in interface EditableTableModel

Overrides:

addRow in class ChoroplethTheme

moveRow

public void moveRow(int from,
 int to)

Description copied from interface: EditableTableModel

Move the specified row to a new location

Specified by:

moveRow in interface EditableTableModel

Overrides:

moveRow in class ChoroplethTheme