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Re^4: Descriptive Stats from .csv file

by Tux (Monsignor)
on Jan 31, 2014 at 14:09 UTC ( #1072849=note: print w/ replies, xml ) Need Help??


in reply to Re^3: Descriptive Stats from .csv file
in thread Descriptive Stats from .csv file

Without even trying to understand what was required, a lot is already possible with DBD::CSV.

$ cat pm1072615.csv Month,Zone,Replicate,SpeciesA,SpeciesB,SpeciesC Sept,1,1,5,10,15 Sept,1,2,0,5,10 Sept,1,3,5,0,5 Sept,2,1,5,5,5 Sept,2,2,10,15,10 Sept,2,3,0,0,5 $ cat pm1072615.pl #!/usr/bin/perl use 5.14.2; use warnings; use DBI; my $dbh = DBI->connect ("dbi:CSV:", undef, undef, { f_ext => ".csv/r", }); my $sth = $dbh->prepare (qq; select month, zone, replicate, avg (speciesa) from pm1072615 group by month,zone, replicate; ); $sth->execute; while (my $row = $sth->fetch) { printf "%-5s %3d %3d %8.5f\n", @$row; } $ perl pm1072615.pl Sept 2 1 5.00000 Sept 2 2 10.00000 Sept 1 1 5.00000 Sept 1 3 5.00000 Use of uninitialized value in printf at pm1072615.pl line 19. Sept 1 2 0.00000 Use of uninitialized value in printf at pm1072615.pl line 19. Sept 2 3 0.00000 $

Enjoy, Have FUN! H.Merijn


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Re^5: Descriptive Stats from .csv file
by Anonymous Monk on Jan 31, 2014 at 22:54 UTC

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