I am trying to pull all the aligned sequences from the .xmfa generated
by progressiveMauve using the coordinates in the .backbone file. Am I
correct in believing that the coordinates in the defline of each .xmfa
block should match those in the corresponding column of .backbone? If
so, something is awry. I find cases of .backbone sequences present in
all genomes that extend beyond the LCB in the .xmfa when I parse these
coordinates. To make things worse, when I convert from ungapped
(unaligned) coordinates (which I am assuming what the .backbone and
.xmfa coordinates are) to gapped coordinates by counting the number of
-'s and then take a slice of the alignment with bioperl, the sequences
don't match up. I'm stumped.

I'd like to use stripSubsetLCBs but it gives the following error
message on my Mac 10.5.8:
Exception FileNotOpened thrown from
Unknown()  in gnFileSource.cpp 67
Called by Unknown()
Read 24053 backbone entries
seq_count is: 0
output_ivs.size() 24053
Segmentation fault

Any pointers would be greatly appreciated.

Thanks,
Maren

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