Geo::GDAL::GeoTransform Class Reference

An array of affine transformation coefficients. More...

Public Member Functions
public method	Apply (array reference x, array reference y)
public method	Extent ()
public method	FromGCPs (array GCPs, scalar ApproxOK)
public method	Inv ()
public method	NorthUp ()
public method	new (array coeffs)

Detailed Description

An array of affine transformation coefficients.

The geo transformation has the form

x = a + column * b + row * c
y = d + column * e + row * f

where
(column,row) is the location in cell coordinates
(x,y) is the location in projection coordinates
or vice versa. A Geo::GDAL::GeoTransform object is a reference to an anonymous array [a,b,c,d,e,f].

Definition at line 5108 of file all.pm.

Member Function Documentation

public method Geo::GDAL::GeoTransform::Apply	(	array reference	x,
		array reference	y
	)

Object method.

Returns

a list (x, y), where x and y are references to arrays of transformed coordinates.

Code:

public method Geo::GDAL::GeoTransform::Extent

(

)

Code:

public method Geo::GDAL::GeoTransform::FromGCPs	(	array	GCPs,
		scalar	ApproxOK
	)

Object method. Compute transformation coefficients from a list of Geo::GDAL::GCP objects

Parameters

GCPs	A list of Geo::GDAL::GCP objects.
ApproxOK	[optional] Minimize the error in the coefficient (integer, default is true).

Returns

a new Geo::GDAL::GeoTransform object.

Code:

public method Geo::GDAL::GeoTransform::Inv

(

)

Object method.

Returns

a new Geo::GDAL::GeoTransform object, which is the inverse of this one (in void context changes this object).

Code:

public method Geo::GDAL::GeoTransform::new

(

array

coeffs

)

Class method.

Returns

a new Geo::GDAL::GeoTransform object.

Code:

public method Geo::GDAL::GeoTransform::NorthUp

(

)

Code:

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The documentation for this class was generated from the following file:

• all.pm