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Re: Deleting a excel column

by atcroft (Abbot)
on May 06, 2023 at 00:21 UTC ( #11152008=note: print w/replies, xml ) Need Help??

in reply to Deleting a excel column

I looked at the docs for Spreadsheet::ParseXLSX (and Spreadsheet::ParseExcel) and Excel::Writer::XLSX, and found several functions that can help (especially if you don't mind a bare-bones approach). Assuming you create $workbook_i by parsing the import file into an S:P object and a $workbook_o when creating the E:W:X object, $workbook_i provides you with:

  • $workbook_i->worksheets() method to get the worksheets present in the input file (which you can loop through with, for example, $worksheet_i)
  • $worksheet_i->get_name() which returns the name of the worksheet you are working with
  • $worksheet_i->row_range() and $worksheet_i->col_range(), which give you the min and max row and column indexes, respectively
  • $worksheet_i->get_cell() which can return a Cell object (eg. $cell) on which you can call $cell->unformatted() to the cell value
  • $workbook_o->add_worksheet() which creates a new worksheet in the E:W:X object (eg., $worksheet_o)
  • $worksheet_o->write() which writes to a particular cell of the worksheet

With the functions above, I wrote a crude filter in 84 lines. (I'd love to see if someone else has a better approach, by the way!)

#!/usr/bin/env perl use strict; use warnings; use Excel::Writer::XLSX; use Getopt::Long; use Spreadsheet::ParseXLSX; my @desired = ( qw/ qux foobar fubar /, ); my $infile = undef; my $outfile = undef; { my @temp_desired = (); GetOptions( q{keep:s} => \@temp_desired, q{input:s} => \$infile, q{output:s} => \$outfile, q{help} => sub { &help; }, ); if ( scalar @temp_desired ) { @desired = ( @temp_desired, ); } &help unless ( ( defined $infile and -e $infile ) and ( defined $outfile ) ); } my $parser_i = Spreadsheet::ParseXLSX->new(); my $workbook_i = $parser_i->parse($infile) or die qq{$infile}, q{: }, $parser_i->error(), qq{.\n}; my $workbook_o = Excel::Writer::XLSX->new($outfile) or die qq{$outfile}, q{: }, qq{Problem creating new Excel file: }, $!, qq{\n}; foreach my $worksheet_i ( $workbook_i->worksheets() ) { my $worksheet_o = $workbook_o->add_worksheet( $worksheet_i->get_name() ); my %ignore = (); my @row_range = $worksheet_i->row_range(); foreach my $i ( $row_range[0] .. $row_range[1] ) { if ( not $i ) { my @col_range = $worksheet_i->col_range(); foreach my $j ( $col_range[0] .. $col_range[1] ) { my $cell = $worksheet_i->get_cell( $i, $j ); if ( defined $cell ) { if ( not scalar grep { $_ eq $cell->unformatted() } @desired ) { $ignore{$j}++; next; } $worksheet_o->write( $i, $j, $cell->unformatted(), ); } } } else { my @col_range = $worksheet_i->col_range(); foreach my $j ( $col_range[0] .. $col_range[1] ) { next if ( defined $ignore{$j} ); my $cell = $worksheet_i->get_cell( $i, $j ); next unless ( defined $cell ); $worksheet_o->write( $i, $j, $cell->unformatted(), ); } } } } $workbook_o->close(); sub help { die qq{$0 --input file --output file [--keep s1] [--keep s2] ...\n}; }
It suffers from a number of limitations, including that it applies the list of values to keep to any worksheet present in the workbook (probably not what you want, but this was just a proof of concept) and it leaves blanks for excluded columns (again, just a proof of concept).

Hope that helps. (Look forward to if others have better code to do the same.)

Update: 2023-05-06

Sample command
./ --input input.xlsx --output.xlsx

Sample input:


1Mrs. WhiteKitchenCandlestick44075139431135348
2Ms. ScarlettLoungeDagger750539473652920900
3Col. MustardLibraryRevolver69142213969067715


Sample output:


 Mrs. WhiteKitchenCandlestick      
 Ms. ScarlettLoungeDagger      
 Col. MustardLibraryRevolver      


Replies are listed 'Best First'.
Re^2: Deleting a excel column
by MoodyDreams999 (Beadle) on May 08, 2023 at 14:53 UTC
    wow Thanks for that, that is definitely a great reference for what I'm trying to do, I appreciate it the proof of conecept.

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