Package com.luciad.format.raster

Class TLcdLinearRasterValueConverter

java.lang.Object

com.luciad.format.raster.TLcdLinearRasterValueConverter

All Implemented Interfaces:

ILcdRasterValueConverter

public class TLcdLinearRasterValueConverter
extends Object
implements ILcdRasterValueConverter

A raster value converter that uses a linear transformation to convert between raster and data values.

When converting from raster values to data values, the following formula is used:
D = (clamp(R, minR, maxR) - O) / S

When converting from data values to raster values, the following formula is used:
R = clamp(D * S + O, minR, maxR)
With:

• D : the data value
• R : the raster value
• minR : the minimum raster value
• maxR : the maximum raster value
• O : the offset to apply
• S : the scale to apply

Since:

2013.0

Constructor Summary

Constructors

Constructor	Description
TLcdLinearRasterValueConverter(int aMinRasterValue, int aMaxRasterValue, double aDataToRasterOffset, double aDataToRasterScale, int aDefaultRasterValue, ILcdISO19103UnitOfMeasure aUnit)	Creates a new raster value converter that uses a linear transformation to convert between raster values and data values.

Method Summary

Modifier and Type	Method	Description
int	dataToRaster(double aDataValue)	Converts data values to raster values.
ILcdISO19103UnitOfMeasure	getUnit()	Returns the unit of the data values.
double	rasterToData(int aRasterValue)	Converts raster values to data values.

Methods inherited from class java.lang.Object

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

Constructor Details

TLcdLinearRasterValueConverter

public TLcdLinearRasterValueConverter(int aMinRasterValue,
 int aMaxRasterValue,
 double aDataToRasterOffset,
 double aDataToRasterScale,
 int aDefaultRasterValue,
 ILcdISO19103UnitOfMeasure aUnit)

Creates a new raster value converter that uses a linear transformation to convert between raster values and data values. For this it used an offset and a scale parameter. See the class docs for more information about how these parameters are used.

Parameters:

aMinRasterValue - the minimal raster value

aMaxRasterValue - the maximal raster value

aDataToRasterOffset - the offset to apply.

aDataToRasterScale - the scale to apply.

aDefaultRasterValue - the default raster value.

aUnit - the unit of the data values.

Method Details

dataToRaster

public int dataToRaster(double aDataValue)

Description copied from interface: ILcdRasterValueConverter

Converts data values to raster values.

Specified by:

dataToRaster in interface ILcdRasterValueConverter

Parameters:

aDataValue - the data value.

Returns:

the raster value.

rasterToData

public double rasterToData(int aRasterValue)

Description copied from interface: ILcdRasterValueConverter

Converts raster values to data values.

Specified by:

rasterToData in interface ILcdRasterValueConverter

Parameters:

aRasterValue - the raster value.

Returns:

the data value.

getUnit

public ILcdISO19103UnitOfMeasure getUnit()

Description copied from interface: ILcdRasterValueConverter

Returns the unit of the data values.

Specified by:

getUnit in interface ILcdRasterValueConverter

Returns:

the unit of the data values. Can be null.