search

KatyBrown / CIAlign

MIT License
116 stars 8 forks source link

The sequences in your alignment are not all the same length #20

Closed majie5976 closed 3 years ago

majie5976 commented 3 years ago

Hi @KatyBrown , Thanks for offering wonderful MSA tool. I was trying to have consensus sequences from slightly different length assembled contigs of a specific repeat element, but unfortunately encountered with an error, I don't have experience to deal with python script. Command and along with error below, **"/CIAlign-1.0.9/CIAlign$ python3 CIAlign.py --infile CalipSat.fasta --outfile_stem STEM Unable to init server: Could not connect: Connection refused Unable to init server: Connection refused

(CIAlign.py:28207): Gdk-CRITICAL : 22:19:13.626: gdk_cursor_new_for_display: assertion 'GDK_IS_DISPLAY (display)' failed /home/mj/CIAlign-1.0.9/CIAlign/utilityFunctions.py:89: VisibleDeprecationWarning: Creating an ndarray from ragged nested sequences (which is a list-or-tuple of lists-or-tuples-or ndarrays with different lengths or shapes) is deprecated. If you meant to do this, you must specify 'dtype=object' when creating the ndarray arr = np.array(seqs[1:]) Error: The sequences in your alignment are not all the same length." Could you please suggest me any solution of it! Thanks

KatyBrown commented 3 years ago

Hi @majie5976, Thanks very much - I'm glad you like our tool.

I think the problem here is that CIAlign is designed to using on aligned FASTA files - https://en.wikipedia.org/wiki/Multiple_sequence_alignment - which are padded with gaps (-) to make them all the same length.

If you are working with multiple newly assembled contigs, you would need to align them with each other using a tool such as MUSCLE, Clustal or MAFFT prior to using CIAlign to make the appropriate input.

If you are looking at the alignments used to assemble the contigs, you would need to use gaps to align the input. e.g.

>seq1
ATGGCGGT--------

>seq2
----CGGTACGTG---

>seq3
---------CGTGACT

I hope this helps, please let us know if you have any other questions. Katy

majie5976 commented 3 years ago

Hi @KatyBrown, Thank you for the response, I got it. Your explanation worked in my case and back on the right track now ! Thanks again ! majie