Subroutine main::Dump redefined at /System/Library/Perl/5.18/CGI.pm line 308. Use of uninitialized value $min in subtraction (-) at /Library/Perl/5.18/GD/Graph/histogram.pm line 110, line 1. Use of uninitialized value $max in subtraction (-) at /Library/Perl/5.18/GD/Graph/histogram.pm line 110, line 1. Use of uninitialized value $max in numeric le (<=) at /Library/Perl/5.18/GD/Graph/histogram.pm line 118, line 1. Use of uninitialized value $upper in numeric le (<=) at /Library/Perl/5.18/GD/Graph/histogram.pm line 118, line 1. Use of uninitialized value $lower in addition (+) at /Library/Perl/5.18/GD/Graph/histogram.pm line 119, line 1. Use of uninitialized value $max in numeric le (<=) at /Library/Perl/5.18/GD/Graph/histogram.pm line 122, line 1. Use of uninitialized value in string eq at /Library/Perl/5.18/GD/Graph/histogram.pm line 42, line 1. Use of uninitialized value in subtraction (-) at /Library/Perl/5.18/GD/Graph/histogram.pm line 59, line 1. Use of uninitialized value in addition (+) at /Library/Perl/5.18/GD/Graph/histogram.pm line 59, line 1. Use of uninitialized value $filename in concatenation (.) or string at /Users/Joshua/eclipse-workspace/PlottingPoints/Histogram line 40, line 1. No such file or directory at /Users/Joshua/eclipse-workspace/PlottingPoints/Histogram line 40, line 1.