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Editing: Stock.pm
package Spreadsheet::WriteExcel::Chart::Stock; ############################################################################### # # Stock - A writer class for Excel Stock charts. # # Used in conjunction with Spreadsheet::WriteExcel::Chart. # # See formatting note in Spreadsheet::WriteExcel::Chart. # # Copyright 2000-2010, John McNamara, jmcnamara@cpan.org # # Documentation after __END__ # require Exporter; use strict; use Spreadsheet::WriteExcel::Chart; use vars qw($VERSION @ISA); @ISA = qw(Spreadsheet::WriteExcel::Chart Exporter); $VERSION = '2.40'; ############################################################################### # # new() # # sub new { my $class = shift; my $self = Spreadsheet::WriteExcel::Chart->new( @_ ); bless $self, $class; return $self; } ############################################################################### # # _store_chart_type() # # Implementation of the abstract method from the specific chart class. # # Write the LINE chart BIFF record. A stock chart uses the same LINE record # as a line chart but with additional DROPBAR and CHARTLINE records to define # the stock style. # sub _store_chart_type { my $self = shift; my $record = 0x1018; # Record identifier. my $length = 0x0002; # Number of bytes to follow. my $grbit = 0x0000; # Option flags. my $header = pack 'vv', $record, $length; my $data = pack 'v', $grbit; $self->_append( $header, $data ); } ############################################################################### # # _store_marker_dataformat_stream(). Overridden. # # This is an implementation of the parent abstract method to define # properties of markers, linetypes, pie formats and other. # sub _store_marker_dataformat_stream { my $self = shift; $self->_store_dropbar(); $self->_store_begin(); $self->_store_lineformat( 0x00000000, 0x0000, 0xFFFF, 0x0001, 0x004F ); $self->_store_areaformat( 0x00FFFFFF, 0x0000, 0x01, 0x01, 0x09, 0x08 ); $self->_store_end(); $self->_store_dropbar(); $self->_store_begin(); $self->_store_lineformat( 0x00000000, 0x0000, 0xFFFF, 0x0001, 0x004F ); $self->_store_areaformat( 0x0000, 0x00FFFFFF, 0x01, 0x01, 0x08, 0x09 ); $self->_store_end(); $self->_store_chartline(); $self->_store_lineformat( 0x00000000, 0x0000, 0xFFFF, 0x0000, 0x004F ); $self->_store_dataformat( 0x0000, 0xFFFD, 0x0000 ); $self->_store_begin(); $self->_store_3dbarshape(); $self->_store_lineformat( 0x00000000, 0x0005, 0xFFFF, 0x0000, 0x004F ); $self->_store_areaformat( 0x00000000, 0x0000, 0x00, 0x01, 0x4D, 0x4D ); $self->_store_pieformat(); $self->_store_markerformat( 0x00, 0x00, 0x00, 0x00, 0x4D, 0x4D, 0x3C ); $self->_store_end(); } 1; __END__ =head1 NAME Stock - A writer class for Excel Stock charts. =head1 SYNOPSIS To create a simple Excel file with a Stock chart using Spreadsheet::WriteExcel: #!/usr/bin/perl -w use strict; use Spreadsheet::WriteExcel; my $workbook = Spreadsheet::WriteExcel->new( 'chart.xls' ); my $worksheet = $workbook->add_worksheet(); my $chart = $workbook->add_chart( type => 'stock' ); # Add a series for each Open-High-Low-Close. $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$B$2:$B$6' ); $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$C$2:$C$6' ); $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$D$2:$D$6' ); $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$E$2:$E$6' ); # Add the worksheet data the chart refers to. # ... See the full example below. __END__ =head1 DESCRIPTION This module implements Stock charts for L<Spreadsheet::WriteExcel>. The chart object is created via the Workbook C<add_chart()> method: my $chart = $workbook->add_chart( type => 'stock' ); Once the object is created it can be configured via the following methods that are common to all chart classes: $chart->add_series(); $chart->set_x_axis(); $chart->set_y_axis(); $chart->set_title(); These methods are explained in detail in L<Spreadsheet::WriteExcel::Chart>. Class specific methods or settings, if any, are explained below. =head1 Stock Chart Methods There aren't currently any stock chart specific methods. See the TODO section of L<Spreadsheet::WriteExcel::Chart>. The default Stock chart is an Open-High-Low-Close chart. A series must be added for each of these data sources. The default Stock chart is in black and white. User defined colours will be added at a later stage. =head1 EXAMPLE Here is a complete example that demonstrates most of the available features when creating a Stock chart. #!/usr/bin/perl -w use strict; use Spreadsheet::WriteExcel; my $workbook = Spreadsheet::WriteExcel->new( 'chart_stock_ex.xls' ); my $worksheet = $workbook->add_worksheet(); my $bold = $workbook->add_format( bold => 1 ); my $date_format = $workbook->add_format( num_format => 'dd/mm/yyyy' ); # Add the worksheet data that the charts will refer to. my $headings = [ 'Date', 'Open', 'High', 'Low', 'Close' ]; my @data = ( [ '2009-08-23', 110.75, 113.48, 109.05, 109.40 ], [ '2009-08-24', 111.24, 111.60, 103.57, 104.87 ], [ '2009-08-25', 104.96, 108.00, 103.88, 106.00 ], [ '2009-08-26', 104.95, 107.95, 104.66, 107.91 ], [ '2009-08-27', 108.10, 108.62, 105.69, 106.15 ], ); $worksheet->write( 'A1', $headings, $bold ); my $row = 1; for my $data ( @data ) { $worksheet->write( $row, 0, $data->[0], $date_format ); $worksheet->write( $row, 1, $data->[1] ); $worksheet->write( $row, 2, $data->[2] ); $worksheet->write( $row, 3, $data->[3] ); $worksheet->write( $row, 4, $data->[4] ); $row++; } # Create a new chart object. In this case an embedded chart. my $chart = $workbook->add_chart( type => 'stock', embedded => 1 ); # Add a series for each of the Open-High-Low-Close columns. $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$B$2:$B$6', name => 'Open', ); $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$C$2:$C$6', name => 'High', ); $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$D$2:$D$6', name => 'Low', ); $chart->add_series( categories => '=Sheet1!$A$2:$A$6', values => '=Sheet1!$E$2:$E$6', name => 'Close', ); # Add a chart title and some axis labels. $chart->set_title( name => 'Open-High-Low-Close', ); $chart->set_x_axis( name => 'Date', ); $chart->set_y_axis( name => 'Share price', ); # Insert the chart into the worksheet (with an offset). $worksheet->insert_chart( 'F2', $chart, 25, 10 ); __END__ =begin html <p>This will produce a chart that looks like this:</p> <p><center><img src="http://homepage.eircom.net/~jmcnamara/perl/images/stock1.jpg" width="527" height="320" alt="Chart example." /></center></p> =end html =head1 AUTHOR John McNamara jmcnamara@cpan.org =head1 COPYRIGHT Copyright MM-MMX, John McNamara. All Rights Reserved. This module is free software. It may be used, redistributed and/or modified under the same terms as Perl itself.
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