oushujun / LTR_retriever

LTR_retriever is a highly accurate and sensitive program for identification of LTR retrotransposons; The LTR Assembly Index (LAI) is also included in this package.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5813529/
GNU General Public License v3.0
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LTR_retriever warning #142

Closed fafuyyk closed 1 year ago

fafuyyk commented 1 year ago

Dear OuShujun

Hello, I use ltr_finder to identify LTR, and use LTR_retriever to correct it. But in my result, there are two kinds of warnings, I can't understand this problem, I want to consult.

Warning one:

Warning: [blastn] Query_28745 chr23.1:13897.. : Could not calculate ungapped Karlin-Altschul parameters due to an invalid query sequence or its translation. Please verify the query sequence(s) and/or filtering options

Warning two: 【Warning】 The identity drops below the safe limit. Instead, identity of 92% will be used for LAI adjustment.

I would like to ask if the meaning of these alerts has affected my results

oushujun commented 1 year ago

Warning one says one sequence is invalid. If this reportes only once, it should be ok

Warning two generated during LAI calculation. It says the overall LTRs are older than the allowed limit. Maybe your genome has very old LTRs or the quality is not good.

Shujun

On Mon, Dec 5, 2022 at 1:16 AM fafuyyk @.***> wrote:

Hello, I use ltr_finder to identify LTR, and use LTR_retriever to correct it. But in my result, there are two kinds of warnings, I can't understand this problem, I want to consult.

Warning one:

Warning: [blastn] Query_28745 chr23.1:13897.. : Could not calculate ungapped Karlin-Altschul parameters due to an invalid query sequence or its translation. Please verify the query sequence(s) and/or filtering options

Warning two: 【Warning】 The identity drops below the safe limit. Instead, identity of 92% will be used for LAI adjustment.

I would like to ask if the meaning of these alerts has affected my results

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