A raster band. More...

Inheritance diagram for Geo::GDAL::Band:

Collaboration diagram for Geo::GDAL::Band:

Public Member Functions
public Geo::GDAL::RasterAttributeTable	AttributeTable (scalar AttributeTable)

public list	CategoryNames (array names)

public scalar	Checksum (scalar xoff=0, scalar yoff=0, scalar xsize=undef, scalar ysize=undef)

public scalar	ColorInterpretation (scalar color_interpretation)

public method	ColorInterpretations ()

public Geo::GDAL::ColorTable	ColorTable (scalar ColorTable)

public method	ComputeBandStats (scalar samplestep=1)

public method	ComputeRasterMinMax (scalar approx_ok=0)

public list	ComputeStatistics (scalar approx_ok, scalar progress=undef, scalar progress_data=undef)

public Geo::OGR::Layer	Contours (scalar DataSource, hashref LayerConstructor, scalar ContourInterval, scalar ContourBase, arrayref FixedLevels, scalar NoDataValue, scalar IDField, scalar ElevField, coderef Progress, scalar ProgressData)

public method	CreateMaskBand (array flags)

public scalar	DataType ()

public Geo::GDAL::Dataset	Dataset ()

public scalar	DeleteNoDataValue ()

public Geo::GDAL::Band	Distance (hash params)

public method	Domains ()

public method	Fill (scalar real_part, scalar imag_part=0.0)

public method	FillNoData (scalar mask, scalar max_search_dist, scalar smoothing_iterations, scalar options, coderef progress, scalar progress_data)

public method	FlushCache ()

public scalar	GetBandNumber ()

public list	GetBlockSize ()

public list	GetDefaultHistogram (scalar force=1, coderef progress=undef, scalar progress_data=undef)

public list	GetHistogram (hash parameters)

public Geo::GDAL::Band	GetMaskBand ()

public list	GetMaskFlags ()

public scalar	GetMaximum ()

public scalar	GetMinimum ()

public Geo::GDAL::Band	GetOverview (scalar index)

public scalar	GetOverviewCount ()

public list	GetStatistics (scalar approx_ok, scalar force)

public method	HasArbitraryOverviews ()

public list	MaskFlags ()

public scalar	NoDataValue (scalar NoDataValue)

public scalar	PackCharacter ()

public method	Piddle ()

public Geo::OGR::Layer	Polygonize (hash params)

public method	RasterAttributeTable ()

public scalar	ReadRaster (hash params)

public array reference	ReadTile (scalar xoff=0, scalar yoff=0, scalar xsize=< width >, scalar ysize=< height >)

public method	RegenerateOverview (Geo::GDAL::Band overview, scalar resampling, coderef progress, scalar progress_data)

public method	RegenerateOverviews (arrayref overviews, scalar resampling, coderef progress, scalar progress_data)

public method	ScaleAndOffset (scalar scale, scalar offset)

public list	SetDefaultHistogram (scalar min, scalar max, scalar histogram)

public method	SetStatistics (scalar min, scalar max, scalar mean, scalar stddev)

public Geo::GDAL::Band	Sieve (hash params)

public list	Size ()

public method	Unit (scalar type)

public method	WriteRaster (hash params)

public method	WriteTile (scalar data, scalar xoff=0, scalar yoff=0)

Public Member Functions inherited from Geo::GDAL::MajorObject
public scalar	Description (scalar description)

public method	Domains ()

public scalar	GetDescription ()

public hash reference	GetMetadata (scalar domain="")

public method	GetMetadataDomainList ()

public hash reference	Metadata (hashref metadata=undef, scalar domain= '')

public method	SetDescription (scalar NewDesc)

public method	SetMetadata (hashref metadata, scalar domain="")

Public Member Functions inherited from Geo::GDAL
public method	BuildVRT ()

public method	CPLBinaryToHex ()

public method	CPLHexToBinary ()

public method	CreatePansharpenedVRT ()

public scalar	DataTypeIsComplex (scalar DataType)

public list	DataTypeValueRange (scalar DataType)

public list	DataTypes ()

public scalar	DecToDMS (scalar angle, scalar axis, scalar precision=2)

public scalar	DecToPackedDMS (scalar dec)

public method	DontUseExceptions ()

public Geo::GDAL::Driver	Driver (scalar Name)

public list	DriverNames ()

public list	Drivers ()

public method	EscapeString ()

public scalar	FindFile (scalar basename)

public method	FinderClean ()

public method	GOA2GetAccessToken ()

public method	GOA2GetAuthorizationURL ()

public method	GOA2GetRefreshToken ()

public scalar	GetCacheMax ()

public scalar	GetCacheUsed ()

public scalar	GetConfigOption (scalar key)

public scalar	GetDataTypeSize (scalar DataType)

public method	GetJPEG2000StructureAsString ()

public Geo::GDAL::Driver	IdentifyDriver (scalar path, scalar siblings)

public Geo::GDAL::Dataset	Open (hash params)

public Geo::GDAL::Dataset	OpenEx (hash params)

public list	OpenFlags ()

public Geo::GDAL::Dataset	OpenShared (scalar name, scalar access= 'ReadOnly')

public scalar	PackCharacter (scalar DataType)

public scalar	PackedDMSToDec (scalar packed)

public method	PopFinderLocation ()

public method	PushFinderLocation (scalar path)

public list	RIOResamplingTypes ()

public list	ResamplingTypes ()

public method	SetCacheMax (scalar Bytes)

public method	SetConfigOption (scalar key, scalar value)

public method	UseExceptions ()

public method	VSIFOpenExL ()

public method	VSIGetLastErrorMsg ()

public method	VSIGetLastErrorNo ()

public scalar	VersionInfo (scalar request= 'VERSION_NUM')

public scalar	errstr ()

Public Attributes
scalar	XSize
	Object attribute. scalar (access as $band->{XSize})

scalar	YSize
	Object attribute. scalar (access as $band->{YSize})

Detailed Description

A raster band.

Definition at line 1190 of file all.pm.

Member Function Documentation

public Geo::GDAL::RasterAttributeTable Geo::GDAL::Band::AttributeTable ( scalar AttributeTable )

Object method.

Parameters

AttributeTable [optional] A Geo::GDAL::RasterAttributeTable object.

Returns: a new Geo::GDAL::RasterAttributeTable object, whose data is contained within the band.

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public list Geo::GDAL::Band::CategoryNames ( array names )

Object method.

Parameters

names [optional]

Returns

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public scalar Geo::GDAL::Band::Checksum	(	scalar	xoff = `0`,
		scalar	yoff = `0`,
		scalar	xsize = `undef`,
		scalar	ysize = `undef`
	)

Object method. Computes a checksum from the raster or a part of it.

Parameters

xoff
yoff
xsize
ysize

Returns: the checksum.

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public scalar Geo::GDAL::Band::ColorInterpretation ( scalar color_interpretation )

Object method.

Note: a.k.a. GetRasterColorInterpretation and GetColorInterpretation (get only and returns an integer), SetRasterColorInterpretation and SetColorInterpretation (set only and requires an integer)

Parameters

color_interpretation [optional] new color interpretation, one of Geo::GDAL::Band::ColorInterpretations.

Returns: The color interpretation of this band. One of Geo::GDAL::Band::ColorInterpretations.

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public method Geo::GDAL::Band::ColorInterpretations ( )

Package subroutine.

Returns: a list of types of color interpretation for raster bands. These are currently: AlphaBand, BlackBand, BlueBand, CyanBand, GrayIndex, GreenBand, HueBand, LightnessBand, MagentaBand, PaletteIndex, RedBand, SaturationBand, Undefined, YCbCr_CbBand, YCbCr_CrBand, YCbCr_YBand, and YellowBand.

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public Geo::GDAL::ColorTable Geo::GDAL::Band::ColorTable ( scalar ColorTable )

Object method. Get or set the color table of this band.

Parameters

ColorTable [optional] a Geo::GDAL::ColorTable object

Returns: A new Geo::GDAL::ColorTable object which represents the internal color table associated with this band. Returns undef this band does not have an associated color table.

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public method Geo::GDAL::Band::ComputeBandStats ( scalar samplestep = 1 )

Object method.

Parameters

samplestep the row increment in computing the statistics.

Note: Returns uncorrected sample standard deviation.

Returns: a list (mean, stddev).

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public method Geo::GDAL::Band::ComputeRasterMinMax ( scalar approx_ok = 0 )

Object method.

Returns: arrayref MinMax = [min, max]

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public list Geo::GDAL::Band::ComputeStatistics	(	scalar	approx_ok,
		scalar	progress = `undef`,
		scalar	progress_data = `undef`
	)

Object method.

Parameters

approx_ok Whether it is allowed to compute the statistics based on overviews or similar.

Note: Returns uncorrected sample standard deviation.

Returns: a list ($min, $max, $mean, $stddev).

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public Geo::OGR::Layer Geo::GDAL::Band::Contours	(	scalar	DataSource,
		hashref	LayerConstructor,
		scalar	ContourInterval,
		scalar	ContourBase,
		arrayref	FixedLevels,
		scalar	NoDataValue,
		scalar	IDField,
		scalar	ElevField,
		coderef	Progress,
		scalar	ProgressData
	)

Object method. Generate contours for this raster band. This method can also be used with named parameters.

Note: This method is a wrapper for ContourGenerate.

An example:

use Geo::GDAL;
$dem = Geo::GDAL::Open('dem.gtiff');
$contours = $dem->Band->Contours(ContourInterval => 10, ElevField => 'z');
$n = $contours->GetFeatureCount;

Parameters

DataSource	a Geo::OGR::DataSource object, default is a Memory data source
LayerConstructor	data for Geo::OGR::DataSource::CreateLayer, default is {Name => 'contours'}
ContourInterval	default is 100
ContourBase	default is 0
FixedLevels	a reference to a list of fixed contour levels, default is []
NoDataValue	default is undef
IDField	default is '', i.e., no field (the field is created if this is given)
ElevField	default is '', i.e., no field (the field is created if this is given)
progress	[optional] a reference to a subroutine, which will be called with parameters (number progress, string msg, progress_data)
progress_data	[optional]

Returns

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public method Geo::GDAL::Band::CreateMaskBand ( array flags )

Object method.

Note: May invalidate any previous mask band obtained with Geo::GDAL::Band::GetMaskBand.

Parameters

flags one or more mask flags. The flags are Geo::GDAL::Band::MaskFlags.

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public Geo::GDAL::Dataset Geo::GDAL::Band::Dataset ( )

Object method.

Returns: The dataset which this band belongs to.

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public scalar Geo::GDAL::Band::DataType ( )

Object method.

Returns: The data type of this band. One of Geo::GDAL::DataTypes.

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public scalar Geo::GDAL::Band::DeleteNoDataValue ( )

Object method.

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public Geo::GDAL::Band Geo::GDAL::Band::Distance ( hash params )

Object method. Compute distances to specific cells of this raster.

Parameters

params

Named parameters:

Distance A raster band, into which the distances are computed. If not given, a not given, a new in-memory raster band is created and returned. The data type of the raster can be given in the options.
Options Hash of options. Options are:
- Values A list of cell values in this band to measure the distance from. If this option is not provided, the distance will be computed to non-zero pixel values. Currently pixel values are internally processed as integers.
- DistUnits=PIXEL|GEO Indicates whether distances will be computed in cells or in georeferenced units. The default is pixel units. This also determines the interpretation of MaxDist.
- MaxDist=n The maximum distance to search. Distances greater than this value will not be computed. Instead output cells will be set to a nodata value.
- NoData=n The nodata value to use on the distance band for cells that are beyond MaxDist. If not provided, the distance band will be queried for a nodata value. If one is not found, 65535 will be used (255 if the type is Byte).
- Use_Input_NoData=YES|NO If this option is set, the nodata value of this band will be respected. Leaving nodata cells in the input as nodata pixels in the distance raster.
- Fixed_Buf_Val=n If this option is set, all cells within the MaxDist threshold are set to this value instead of the distance value.
- DataType The data type for the result if it is not given.
Progress Progress function.
ProgressData Additional parameter for the progress function.

Note: This GDAL function behind this API is called GDALComputeProximity.

Returns: The distance raster.

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public method Geo::GDAL::Band::Domains ( )

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public method Geo::GDAL::Band::Fill	(	scalar	real_part,
		scalar	imag_part = `0.0`
	)

Object method. Fill the band with a constant value.

Parameters

real_part	Real component of fill value.
imag_part	Imaginary component of fill value.

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public method Geo::GDAL::Band::FillNoData	(	scalar	mask,
		scalar	max_search_dist,
		scalar	smoothing_iterations,
		scalar	options,
		coderef	progress,
		scalar	progress_data
	)

Object method. Interpolate values for cells in this raster. The cells to fill should be marked in the mask band with zero.

Parameters

mask	[optional] a mask band indicating cells to be interpolated (zero valued) (default is to get it with Geo::GDAL::Band::GetMaskBand).
max_search_dist	[optional] the maximum number of cells to search in all directions to find values to interpolate from (default is 10).
smoothing_iterations	[optional] the number of 3x3 smoothing filter passes to run (0 or more) (default is 0).
options	[optional] A reference to a hash. No options have been defined so far for this algorithm (default is {}).
progress	[optional] a reference to a subroutine, which will be called with parameters (number progress, string msg, progress_data) (default is undef).
progress_data	[optional] (default is undef).

Documentation for GDAL algorithms

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public method Geo::GDAL::Band::FlushCache ( )

Object method. Write cached data to disk. There is usually no need to call this method.

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public scalar Geo::GDAL::Band::GetBandNumber ( )

Object method.

Returns: The index of this band in the parent dataset list of bands.

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public list Geo::GDAL::Band::GetBlockSize ( )

Object method.

Returns: The size of a preferred i/o raster blocks as a list (width, height).

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public list Geo::GDAL::Band::GetDefaultHistogram	(	scalar	force = `1`,
		coderef	progress = `undef`,
		scalar	progress_data = `undef`
	)

Object method.

Parameters

force	true to force the computation
progress	[optional] a reference to a subroutine, which will be called with parameters (number progress, string msg, progress_data)
progress_data	[optional]

Note: See Note in Geo::GDAL::Band::GetHistogram.

Returns: a list: ($min, $max, arrayref histogram).

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public list Geo::GDAL::Band::GetHistogram ( hash parameters )

Object method. Compute histogram from the raster.

Parameters

parameters

Named parameters:

Min the lower bound, default is -0.5
Max the upper bound, default is 255.5
Buckets the number of buckets in the histogram, default is 256
IncludeOutOfRange whether to use the first and last values in the returned list for out of range values, default is false; the bucket size is (Max-Min) / Buckets if this is false and (Max-Min) / (Buckets-2) if this is true
ApproxOK if histogram can be computed from overviews, default is false
Progress an optional progress function, the default is undef
ProgressData data for the progress function, the default is undef

Note: Histogram counts are treated as strings in the bindings to be able to use large integers (if GUIntBig is larger than Perl IV). In practice this is only important if you have a 32 bit machine and very large bucket counts. In those cases it may also be necessary to use Math::BigInt.

Returns: a list which contains the count of values in each bucket

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public Geo::GDAL::Band Geo::GDAL::Band::GetMaskBand ( )

Object method.

Returns: the mask band associated with this band.

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public list Geo::GDAL::Band::GetMaskFlags ( )

Object method.

Returns: the mask flags of the mask band associated with this band. The flags are one or more of Geo::GDAL::Band::MaskFlags.

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public scalar Geo::GDAL::Band::GetMaximum ( )

Object method.

Note: Call Geo::GDAL::Band::ComputeStatistics before calling GetMaximum to make sure the value is computed.

Returns: statistical minimum of the band or undef if statistics are not kept or computed in scalar context. In list context returns the maximum value or a (kind of) maximum value supported by the data type and a boolean value, which indicates which is the case (true is first, false is second).

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public scalar Geo::GDAL::Band::GetMinimum ( )

Object method.

Note: Call Geo::GDAL::Band::ComputeStatistics before calling GetMinimum to make sure the value is computed.

Returns: statistical minimum of the band or undef if statistics are not kept or computed in scalar context. In list context returns the minimum value or a (kind of) minimum value supported by the data type and a boolean value, which indicates which is the case (true is first, false is second).

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public Geo::GDAL::Band Geo::GDAL::Band::GetOverview ( scalar index )

Object method.

Parameters

index 0..GetOverviewCount-1

Returns: a Geo::GDAL::Band object, which represents the internal overview band, or undef. if the index is out of bounds.

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public scalar Geo::GDAL::Band::GetOverviewCount ( )

Object method.

Returns: the number of overviews available of the band.

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public list Geo::GDAL::Band::GetStatistics	(	scalar	approx_ok,
		scalar	force
	)

Object method.

Parameters

approx_ok	Whether it is allowed to compute the statistics based on overviews or similar.
force	Whether to force scanning of the whole raster.

Note: Uses Geo::GDAL::Band::ComputeStatistics internally.

Returns: a list ($min, $max, $mean, $stddev).

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public method Geo::GDAL::Band::HasArbitraryOverviews ( )

Object method.

Returns: true or false.

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public list Geo::GDAL::Band::MaskFlags ( )

Package subroutine.

Returns

the list of mask flags. These are

AllValid: There are no invalid cell, all mask values will be 255. When used this will normally be the only flag set.
PerDataset: The mask band is shared between all bands on the dataset.
Alpha: The mask band is actually an alpha band and may have values other than 0 and 255.
NoData: Indicates the mask is actually being generated from nodata values. (mutually exclusive of Alpha).

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public scalar Geo::GDAL::Band::NoDataValue ( scalar NoDataValue )

Object method. Remove no data value from this band.

Parameters

NoDataValue [optional] Get or set the "no data" value.

Note: $band->NoDataValue(undef) sets the "no data" value to the Posix floating point maximum. Use Geo::GDAL::Band::DeleteNoDataValue to remove no data value from this band.

Returns: The "no data" value or undef in scalar context. An undef value indicates that there is no no data value associated with this band.

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public scalar Geo::GDAL::Band::PackCharacter ( )

Object method.

Returns: The character to use in Perl pack and unpack for the data of this band.

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public method Geo::GDAL::Band::Piddle ( )

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public Geo::OGR::Layer Geo::GDAL::Band::Polygonize ( hash params )

Object method. Polygonize this raster band.

Parameters

params

Named parameters:

Mask A raster band, which is used as a mask to select polygonized areas. Default is undef.
OutLayer A vector layer into which the polygons are written. If not given, an in-memory layer 'polygonized' is created and returned.
PixValField The name of the field in the output layer into which the cell value of the polygon area is stored. Default is 'val'.
Options Hash or list of options. Connectedness can be set to 4 to use 4-connectedness, otherwise 8-connectedness is used. ForceIntPixel can be set to 1 to force using a 32 bit int buffer for cell values in the process. If this is not set and the data type of this raster does not fit into a 32 bit int buffer, a 32 bit float buffer is used.
Progress Progress function.
ProgressData Additional parameter for the progress function.

Returns: Output vector layer.

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public method Geo::GDAL::Band::RasterAttributeTable ( )

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public scalar Geo::GDAL::Band::ReadRaster ( hash params )

Object method. Read data from the band.

Parameters

params

Named parameters:

XOff x offset (cell coordinates) (default is 0)
YOff y offset (cell coordinates) (default is 0)
XSize width of the area to read (default is the width of the band)
YSize height of the area to read (default is the height of the band)
BufXSize (default is undef, i.e., the same as XSize)
BufYSize (default is undef, i.e., the same as YSize)
BufType data type of the buffer (default is the data type of the band)
BufPixelSpace (default is 0)
BufLineSpace (default is 0)
ResampleAlg one of Geo::GDAL::RIOResamplingTypes (default is 'NearestNeighbour'),
Progress reference to a progress function (default is undef)
ProgressData (default is undef)

Entry in GDAL docs (method RasterIO)

Returns: a buffer, open the buffer with unpack function of Perl. See Geo::GDAL::Band::PackCharacter.

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public array reference Geo::GDAL::Band::ReadTile	(	scalar	xoff = `0`,
		scalar	yoff = `0`,
		scalar	xsize = `<width>`,
		scalar	ysize = `<height>`
	)

Object method.

Usage example (print the data from a band):

print "@$_\n" for ( @{ $band->ReadTile() } );

Another usage example (process the data of a large dataset that has one band):

my($W,$H) = $dataset->Band(1)->Size();
my($xoff,$yoff,$w,$h) = (0,0,200,200);
while (1) {
.    if ($xoff >= $W) {
.        $xoff = 0;
.        $yoff += $h;
.        last if $yoff >= $H;
.    }
.    my $data = $dataset->Band(1)->ReadTile($xoff,$yoff,min($W-$xoff,$w),min($H-$yoff,$h));
.    # add your data processing code here
.    $dataset->Band(1)->WriteTile($data,$xoff,$yoff);
.    $xoff += $w;
}
sub min {
.    return $_[0] < $_[1] ? $_[0] : $_[1];
}

Parameters

xoff	Number of cell to skip before starting to read from a row. Pixels are read from left to right.
yoff	Number of cells to skip before starting to read from a column. Pixels are read from top to bottom.
xsize	Number of cells to read from each row.
ysize	Number of cells to read from each column.

Returns: a two-dimensional Perl array, organizes as data->[y][x], y = 0..height-1, x = 0..width-1. I.e., y is row and x is column.

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public method Geo::GDAL::Band::RegenerateOverview	(	Geo::GDAL::Band	overview,
		scalar	resampling,
		coderef	progress,
		scalar	progress_data
	)

Object method.

Parameters

overview	a Geo::GDAL::Band object for the overview.
resampling	[optional] the resampling method (one of Geo::GDAL::RIOResamplingTypes) (default is Average).
progress	[optional] a reference to a subroutine, which will be called with parameters (number progress, string msg, progress_data)
progress_data	[optional]

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public method Geo::GDAL::Band::RegenerateOverviews	(	arrayref	overviews,
		scalar	resampling,
		coderef	progress,
		scalar	progress_data
	)

Object method.

Todo:: This is not yet available

Parameters

overviews	a list of Geo::GDAL::Band objects for the overviews.
resampling	[optional] the resampling method (one of Geo::GDAL::RIOResamplingTypes) (default is Average).
progress	[optional] a reference to a subroutine, which will be called with parameters (number progress, string msg, progress_data)
progress_data	[optional]

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public method Geo::GDAL::Band::ScaleAndOffset	(	scalar	scale,
		scalar	offset
	)

Object method. Scale and offset are used to transform raw cell values into the units returned by GetUnits(). The conversion function is:

Units value = (raw value * scale) + offset

Returns: a list ($scale, $offset), the values are undefined if they are not set.

Since: version 1.9 of the bindings.

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public list Geo::GDAL::Band::SetDefaultHistogram	(	scalar	min,
		scalar	max,
		scalar	histogram
	)

Object method.

Parameters

min
max

Note: See Note in Geo::GDAL::Band::GetHistogram.

Parameters

histogram reference to an array containing the histogram

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public method Geo::GDAL::Band::SetStatistics	(	scalar	min,
		scalar	max,
		scalar	mean,
		scalar	stddev
	)

Object method. Save the statistics of the band if possible (the format can save arbitrary metadata).

Parameters

min
max
mean
stddev	Code: click to view # Number of lines of code in SetStatistics: 2 sub SetStatistics { }

public Geo::GDAL::Band Geo::GDAL::Band::Sieve ( hash params )

Object method. Remove small areas by merging them into the largest neighbour area.

Parameters

params

Named parameters:

Mask A raster band, which is used as a mask to select sieved areas. Default is undef.
Dest A raster band into which the result is written. If not given, an new in-memory raster band is created and returned.
Threshold The smallest area size (in number of cells) which are not sieved away.
Options Hash or list of options. {Connectedness => 4} can be specified to use 4-connectedness, otherwise 8-connectedness is used.
Progress Progress function.
ProgressData Additional parameter for the progress function.

Returns: The filtered raster band.

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public list Geo::GDAL::Band::Size ( )

Object method.

Returns: The size of the band as a list (width, height).

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public method Geo::GDAL::Band::Unit ( scalar type )

Object method.

Parameters

type	[optional] the unit (a string).

Note: $band->Unit(undef) sets the unit value to an empty string.

Returns: the unit (a string).

Since: version 1.9 of the bindings.

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public method Geo::GDAL::Band::WriteRaster ( hash params )

Object method. Write data into the band.

Parameters

params

Named parameters:

XOff x offset (cell coordinates) (default is 0)
YOff y offset (cell coordinates) (default is 0)
XSize width of the area to write (default is the width of the band)
YSize height of the area to write (default is the height of the band)
Buf a buffer (or a reference to a buffer) containing the data. Create the buffer with pack function of Perl. See Geo::GDAL::Band::PackCharacter.
BufXSize (default is undef, i.e., the same as XSize)
BufYSize (default is undef, i.e., the same as YSize)
BufType data type of the buffer (default is the data type of the band)
BufPixelSpace (default is 0)
BufLineSpace (default is 0)

Entry in GDAL docs (method RasterIO)

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public method Geo::GDAL::Band::WriteTile	(	scalar	data,
		scalar	xoff = `0`,
		scalar	yoff = `0`
	)

Object method.

Parameters

data	A two-dimensional Perl array, organizes as data->[y][x], y = 0..height-1, x = 0..width-1.
xoff
yoff

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

all.pm

Public Member Functions

Public Attributes

Detailed Description

Member Function Documentation