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lib/GD/Graph/Thermometer.pm  view on Meta::CPAN

    suggested remedies.

=over

=item C<< Couldn't open file . . . >>

The system user under which this module was invoked does not
have sufficient permission to write to the result image file.
Make sure that the user has write permission on the target
directory, or alternately, touch the file into existance and
use chown and chmod to give write permissions on the result
file itself to the user which will invoke the module.  If this
is run by your web server, that user is likely nobody, apache,
www-data or something similiar.

=item C<< The call to GD::Graph::Thermometer failed to define
a title for the resulting graph. >>

Add "title => 'This is the title of my graph'," to your
constructor, otherwise the module will throw this error and
produce a graph without an explanatory title.