Geo::GDAL::FFI::Band - A GDAL raster band
A band (channel) in a raster dataset. Use the Band method of a dataset object to obtain a band object.
my $datatype = $band->GetDataType;
my @size = $band->GetSize;
my @size = $band->GetBlockSize;
my $nodata = $band->GetNoDataValue;
$band->SetNoDataValue($value);
Calling the method without arguments deletes the nodata value.
$band->SetNoDataValue;
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.
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.
@blocksize
$datatype
$band->Write($data, $xoff, $yoff, $xsize, $ysize);
$band->WriteBlock($data, $xoff, $yoff);
$band->SetPiddle($pdl, $xoff, $yoff, $xsize, $ysize);
Read data from a piddle into this Band.
$band->GetPiddle($xoff, $yoff, $xsize, $ysize, $xdim, $ydim);
Read data from this Band into a piddle.
my $ci = $band->GetColorInterpretation;
$band->SetColorInterpretation($ci);
my $color_table = $band->GetColorTable;
Returns the color table as an array of arrays. The inner tables are colors [c1...c4].
$band->GetColorTable($color_table);
This software is released under the Artistic License. See perlartistic.
Ari Jolma - Ari.Jolma at gmail.com
Geo::GDAL::FFI
Alien::gdal, FFI::Platypus, http://www.gdal.org
To install Geo::GDAL::FFI, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Geo::GDAL::FFI
CPAN shell
perl -MCPAN -e shell install Geo::GDAL::FFI
For more information on module installation, please visit the detailed CPAN module installation guide.