org.geotools.coverage.grid.io.imageio.geotiff
Class PixelScale

Object
  PixelScale

public final class PixelScale
extends Object

This class is a placeholder for defining exact affine transformations between raster and model space.

Quoting the geotiff spec:

          ModelPixelScaleTag:
          Tag = 33550
          Type = DOUBLE (IEEE Double precision)
          N = 3
          Owner: SoftDesk
 

This tag may be used to specify the size of raster pixel spacing in the model space units, when the raster space can be embedded in the model space coordinate system without rotation, and consists of the following 3 values:

       ModelPixelScaleTag = (ScaleX, ScaleY, ScaleZ)
 

where ScaleX and ScaleY give the horizontal and vertical spacing of raster pixels. The ScaleZ is primarily used to map the pixel value of a digital elevation model into the correct Z-scale, and so for most other purposes this value should be zero (since most model spaces are 2-D, with Z=0).

A single tiepoint in the ModelTiepointTag, together with this tag, completely determine the relationship between raster and model space

Since:

2.3

Author:

Simone Giannecchini, GeoSolutions

Constructor Summary

PixelScale()

PixelScale(double scaleX, double scaleY, double scaleZ)

Method Summary

boolean	equals(Object that)
double	getScaleX()
double	getScaleY()
double	getScaleZ()
double[]	getValues()
int	hashCode()
boolean	isSet()
boolean	isSetExtended()
void	setScaleX(double scaleX)
void	setScaleY(double scaleY)
void	setScaleZ(double scaleZ)
String	toString()

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PixelScale

public PixelScale(double scaleX,
                  double scaleY,
                  double scaleZ)

PixelScale

public PixelScale()

Method Detail

equals

public boolean equals(Object that)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

getScaleX

public double getScaleX()

setScaleX

public void setScaleX(double scaleX)

getScaleY

public double getScaleY()

setScaleY

public void setScaleY(double scaleY)

getScaleZ

public double getScaleZ()

setScaleZ

public void setScaleZ(double scaleZ)

getValues

public double[] getValues()

isSet

public boolean isSet()

isSetExtended

public boolean isSetExtended()