I’m trying to visualize my blast results from Diamond. I was having an error message that said:
“megan.data.IClassificationBlock.getKeySet()” because “classificationBlock” is null
I found a thread where someone has a similar error here
and the answer was
If it does, then the question is
(2) which database did you align against? Which mapping db file are you using (e.g. megan-map-Feb2022-ue.db?). If there is a mismatch between the database against which you aligned the sequences and the mapping db file that you are using, then this would explain why there are 0 assignments.
I am using the most recent mapping db file from the MEGAN6 downloads page which is megan-map-Feb2022.db.zip. I wanted to know which version of Blast from diamond is compatible with this version of the Megan file? I am currently using ncbi-blast-2.13.0±aarch64-linux.tar.gz from this website but it’s still not aligning.
Thank you very much!