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8.7 years ago
rkooliyottil
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0
Hi, I am trying to use the sequence aligner diamond to identify my differentially expressed genes from an RNAseq data set. I used diamond blastx -p 24 -f tab --seg yes -d nr -q merged.fa -o matches.m8 But always return with an error message. "Insufficient arguments. Use diamond -h for help" Any help is highly appreciated. Rinu
And what does
diamond -htell you about the arguments?Thanks, This is what I get from diamond -h
What if you try the example command provided on github,
This is what I used the first time, then I added other arguments. But still it is giving the same message. In the mean time, I tried adding another argument -a matches.daa. It seems like working. It produced an output file "matches.daa". Is this my results of Blast? If so, how to read this file?
Have you actually created the
nrDIAMOND database fromnr.fafile?Yes, I did. I am now able to do this. Thank you so much for your help.
Hi, I am having this problem as well. Could you be able to tell me how did you solve the problem? Thanks.
I assume the poster above created
nrDIAMOND database, which fixed the problem. Have you done that?Yes, I did it. The nr.dmnd is created from nr.faa. Thanks.
If the index file is not in your
$PATHthen make sure you provide the full file path in the command.Hi, I believe I am working in the file directory. Even I added the full path, it still did not work. May I ask is there a specific format of the DNA sequence file? The manual says "translated DNA". Therefore I used the .fna output file from prokka. I am sorry if I ask silly questions, I am new in bioinformatics. Thanks.
Please show us your command line and the full console output of Diamond. Also please run this and show us the output: diamond --version
hi, below are the command lines and the console output. Thanks.
Try -a matches.m8. The version you are using is very old though, I recommend upgrading to the latest version.
Thanks for your suggestion. I am using a server based diamond. I have requested the updation, however, it takes very long time. In the meantime, I did -a matches.m8 which created matches.m8.daa. However, I couldn't open it on my server. Do you have any suggestions to help me open it? Thanks very much for your help.