Entering edit mode
7.8 years ago
rkooliyottil
•
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 -h
tell 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
nr
DIAMOND database fromnr.fa
file?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
nr
DIAMOND 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
$PATH
then 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.