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BOLD(split_fasta) - Split a fasta file according to sequence and character counts
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CODE(BOLD(split_fasta query_granularity character_granularity fasta_file))
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BOLD(split_fasta) is a simple script to split a fasta file according to user provided parameters. The script iterates over the given file, generating a new sub_file called input.i each time the contents of the previous file (input.(i-1)) exceed the number of queries given by query_granularity or the number of characters given by character_granularity.
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On success, returns zero. On failure, returns non-zero.
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SECTION(ENVIRONMENT VARIABLES)
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To split a fasta file smallpks.fa into pieces no larger than 500 queries and with no piece receiving additional sequences if it exceeds 10000 characters we would do:
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python split_fasta 500 10000 smallpks.fa
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This would generate files input.0, input.1, ..., input.N where N is the number of appropriately constrained files necessary to contain all sequences in smallpks.fa.