Dean Arnold > DBD-Chart-0.82 > DBD::Chart

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Module Version: 0.82   Source  

NAME ^

DBD::Chart - DBI driver abstraction for Rendering Charts and Graphs

SYNOPSIS ^

        $dbh = DBI->connect('dbi:Chart:')
            or die "Cannot connect: " . $DBI::errstr;
        #
        #       create file if it deosn't exist, otherwise, just open
        #
        $dbh->do('CREATE TABLE mychart (name CHAR(10), ID INTEGER, value FLOAT)')
                or die $dbh->errstr;

        #       add data to be plotted
        $sth = $dbh->prepare('INSERT INTO mychart VALUES (?, ?, ?)');
        $sth->bind_param(1, 'Values');
        $sth->bind_param(2, 45);
        $sth->bind_param(3, 12345.23);
        $sth->execute or die 'Cannot execute: ' . $sth->errstr;

        #       and render it
        $sth = $dbh->prepare('SELECT BARCHART FROM mychart');
        $sth->execute or die 'Cannot execute: ' . $sth->errstr;
        @row = $sth->fetchrow_array;
        print $row[0];

        # delete the chart
        $sth = $dbh->prepare('DROP TABLE mychart')
                or die "Cannot prepare: " . $dbh->errstr;
        $sth->execute or die 'Cannot execute: ' . $sth->errstr;

        $dbh->disconnect;

WARNING ^

THIS IS BETA SOFTWARE.

DESCRIPTION ^

The DBD::Chart provides a DBI abstraction for rendering pie charts, bar charts, box&whisker charts (aka boxcharts), histograms, Gantt charts, and line, point, and area graphs.

For detailed usage information, see the included dbdchart.html webpage. See DBI(3) for details on DBI.

Prerequisites

Perl 5.6.0 minimum
DBI 1.14 minimum
DBD::Chart::Plot 0.80 (included with this package)
GD X.XX minimum
GD::Text X.XX minimum
Time::HiRes
libpng
zlib
libgd
jpeg-6b

Installation

For Windows users, use WinZip or similar to unpack the file, then copy Chart.pm to wherever your site-specific modules are kept (usually \Perl\site\lib\DBD for ActiveState Perl installations). Also create a 'Chart' directory in the DBD directory, and copy the Plot.pm module to the new directory. Note that you won't be able to execute the install test with this, but you need a copy of 'nmake' and all its libraries to run that anyway. I may whip up a PPM in the future.

For Unix, extract it with

    gzip -cd DBD-Chart-0.80.tar.gz | tar xf -

and then enter the following:

    cd DBD-Chart-0.80
    perl Makefile.PL
    make

You can test the installation by running

        make test

this will render a bunch of charts and an HTML page to view them with. Assuming the test completes successfully, you should use a web browser to view the file t/plottest.html and verify the images look reasonable.

If tests succeed, proceed with installation via

    make install

Note that you probably need root or administrator permissions. If you don't have them, read the ExtUtils::MakeMaker man page for details on installing in your own directories. ExtUtils::MakeMaker.

FOR MORE INFO ^

Check out http://www.presicient.com/dbdchart with your favorite browser. It includes all the usage information.

AUTHOR AND COPYRIGHT ^

This module is Copyright (C) 2001, 2002 by Presicient Corporation

    Email: darnold@presicient.com

You may distribute this module under the terms of the Artistic License, as specified in the Perl README file.

SEE ALSO ^

DBI(3)

For help on the use of DBD::Chart, see the DBI users mailing list:

  dbi-users-subscribe@perl.org

For general information on DBI see

  http://dbi.perl.org
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