[Bioperl-l] more question about extracting information from GFF file

[Jack Chen]

To: bioperl-l at bioperl.org
Subject: more questions about parsing gff files
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Hi All,

I'd like to ask you for assistance on how to extract some fields from gff
files. Say from the attached file, I'd like to get the sequence name (the 
string inside the double quotes). Could you please show me how to do
this? I have tried methods from the Bio::SeqFeatureI module but none of
them do the trick.

Thanks,

Jack

Example file:

CHROMOSOME_I    curated exon    5959876 5959878 .       -       0
Sequence "B0207.8"   
CHROMOSOME_I    curated exon    10079837        10079839        .       -
0       Sequence "B0379.2"   
CHROMOSOME_I    curated exon    6628806 6628808 .       +       0
Sequence "D2092.8"   
CHROMOSOME_I    curated exon    9171713 9171715 .       +       0
Sequence "F25H5.4"   
CHROMOSOME_I    curated exon    7356125 7356126 .       +       2
Sequence "F52A8.6b"   
CHROMOSOME_I    curated exon    5020062 5020064 .       -       0
Sequence "F54C1.7"   
CHROMOSOME_I    curated exon    6149532 6149534 .       +       0
Sequence "F56F4.3"   
CHROMOSOME_I    curated exon    13333412        13333414        .       +
0       Sequence "T04D3.4"   
CHROMOSOME_I    curated exon    6162206 6162208 .       +       0
Sequence "T09B4.5"   
HROMOSOME_X     curated exon    9493440 9493442 .       -       0
Sequence "ZK899.4"   


+-----O----------------------------------------+
|    o-o     Jack Chen, Stein Laboratory       |
|    o---o   Cold Spring Harbor Laboratory     |
|  o----o    1 Bungtown Road                   |
| O----O     Cold Spring Harbor, NY, 11724     |
| 0--o       Tel: 1 516 367 8394               |
|   O        Website: http://www.wormbase.org  |
|  o-o       e-mail: chenn at cshl.org            |
+-o---o----------------------------------------+