i have found a small problem in gff_filter_by_attribute and not sure how
to fix it properly.

gff_filter_by_attribute.xml accepts gff data types but crashes if you
run it with gff. Because metadata.attribute_types is not defined for gff
and the dictionary is empty. For gtf files it works, because gtf has
metadata.attribute_types defined.

Should we extend the gff data type to also set metadata.attribute_types
or is it for some reason better to create a gff<->gtf converter and
chance gff_filter_by_attribute.xml to only accept gtf files?


Björn Grüning
Albert-Ludwigs-Universität Freiburg
Institute of Pharmaceutical Sciences
Pharmaceutical Bioinformatics
Hermann-Herder-Strasse 9
D-79104 Freiburg i. Br.

Tel.:  +49 761 203-4872
Fax.:  +49 761 203-97769
E-Mail: bjoern.gruen...@pharmazie.uni-freiburg.de
Web: http://www.pharmaceutical-bioinformatics.org/

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