NAME
Geo::GDAL::FFI::Band - A GDAL raster band
SYNOPSIS
DESCRIPTION
A band (channel) in a raster dataset. Use the Band method of a dataset object to obtain a band object.
METHODS
GetDataType
my $datatype = $band->GetDataType;GetSize
my @size = $band->GetSize;GetBlockSize
my @size = $band->GetBlockSize;GetNoDataValue
my $nodata = $band->GetNoDataValue;SetNoDataValue
$band->SetNoDataValue($value);Calling the method without arguments deletes the nodata value.
$band->SetNoDataValue;Read
my $data = $band->Read($xoff, $yoff, $xsize, $ysize, $bufxsize, $bufysize);All arguments are optional. If no arguments are given, reads the whole raster band into a 2D Perl array. The returned array is an array of references to arrays of row values.
ReadBlock
my $data = $band->ReadBlock($xoff, $yoff, @blocksize, $datatype);Reads a block of data from the band and returns it as a Perl 2D array. @blocksize and $datatype (an integer) are optional and obtained from the GDAL raster object if not given.
Write
$band->Write($data, $xoff, $yoff, $xsize, $ysize);WriteBlock
$band->WriteBlock($data, $xoff, $yoff);SetPiddle
$band->SetPiddle($pdl, $xoff, $yoff, $xsize, $ysize);Read data from a piddle into this Band.
GetPiddle
$band->GetPiddle($xoff, $yoff, $xsize, $ysize, $xdim, $ydim);Read data from this Band into a piddle.
GetColorInterpretation
my $ci = $band->GetColorInterpretation;SetColorInterpretation
$band->SetColorInterpretation($ci);GetColorTable
my $color_table = $band->GetColorTable;Returns the color table as an array of arrays. The inner tables are colors [c1...c4].
SetColorTable
$band->SetColorTable($color_table);LICENSE
This software is released under the Artistic License. See perlartistic.
AUTHOR
Ari Jolma - Ari.Jolma at gmail.com