Does anyone know what this output in tophat mean? How much of a problem is it?
Seqanswers Leaderboard Ad
Collapse
Announcement
Collapse
No announcement yet.
X
-
I am curious too...
I am curious as well as to what this truly means and if it should be a concern. I encountered it on my latest runs in which I am using the Ensembl version of the human genome assembly. An example of the warning displayed is:
[Sun Aug 08 23:20:23 2010] Beginning TopHat run (v1.0.14)
-----------------------------------------------
[Sun Aug 08 23:20:23 2010] Preparing output location brain/
[Sun Aug 08 23:20:23 2010] Checking for Bowtie index files
[Sun Aug 08 23:20:23 2010] Checking for reference FASTA file
[Sun Aug 08 23:20:23 2010] Checking for Bowtie
Bowtie version: 0.12.5.0
[Sun Aug 08 23:20:23 2010] Checking reads
seed length: 36bp
format: fastq
quality scale: phred33 (default)
[Sun Aug 08 23:23:07 2010] Mapping reads against Homo_sapiens.GRCh37.59 with Bowtie
[Sun Aug 08 23:26:43 2010] Joining segment hits
[Sun Aug 08 23:27:09 2010] Mapping reads against Homo_sapiens.GRCh37.59 with Bowtie
[Sun Aug 08 23:31:02 2010] Joining segment hits
[Sun Aug 08 23:31:26 2010] Searching for junctions via segment mapping
[Sun Aug 08 23:46:58 2010] Retrieving sequences for splices
[Sun Aug 08 23:52:48 2010] Indexing splices
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
Warning: Encountered reference sequence with only gaps
[Sun Aug 08 23:54:58 2010] Mapping reads against segment_juncs with Bowtie
[Sun Aug 08 23:58:35 2010] Joining segment hits
[Sun Aug 08 23:59:00 2010] Mapping reads against segment_juncs with Bowtie
[Mon Aug 09 00:02:49 2010] Joining segment hits
[Mon Aug 09 00:03:13 2010] Reporting output tracks
-----------------------------------------------
Run complete [00:45:40 elapsed]
-steve
-
Originally posted by digitonin View PostI never did find an answer to this. I didn't see any problems associated it with it either though.
First of all, sorry for bumping such a old post, but this problem still persists...
Does anyone found a reason why does this happens?
I have obtained this same warning message when using the current Drosophila melanogaster reference (r6.03; BDGP5.78)
Comment
-
Hi,
I am using bowtie 1.1.2 and I get the same message -
encountered reference sequence with gaps
My genome is not repmasked and has the following type of header
>ta_IWGSC_CSSassembly_1as_v2_44039
Does such a warning interfere with the bowtie-build in anyway?
Comment
-
This will happen whenever you have cases like this
Code:>chr1 >chr2 ACAGCTACT
Code:>chr3 NNNNNNN >chr4 ACGTAGCTGACT
Comment
Latest Articles
Collapse
-
by seqadmin
Technological advances have led to drastic improvements in the field of precision medicine, enabling more personalized approaches to treatment. This article explores four leading groups that are overcoming many of the challenges of genomic profiling and precision medicine through their innovative platforms and technologies.
Somatic Genomics
“We have such a tremendous amount of genetic diversity that exists within each of us, and not just between us as individuals,”...-
Channel: Articles
05-24-2024, 01:16 PM -
-
by seqadmin
The sequencing world is rapidly changing due to declining costs, enhanced accuracies, and the advent of newer, cutting-edge instruments. Equally important to these developments are improvements in sequencing analysis, a process that converts vast amounts of raw data into a comprehensible and meaningful form. This complex task requires expertise and the right analysis tools. In this article, we highlight the progress and innovation in sequencing analysis by reviewing several of the...-
Channel: Articles
05-06-2024, 07:48 AM -
ad_right_rmr
Collapse
News
Collapse
Topics | Statistics | Last Post | ||
---|---|---|---|---|
Started by seqadmin, Today, 06:55 AM
|
0 responses
8 views
0 likes
|
Last Post
by seqadmin
Today, 06:55 AM
|
||
Started by seqadmin, 05-30-2024, 03:16 PM
|
0 responses
23 views
0 likes
|
Last Post
by seqadmin
05-30-2024, 03:16 PM
|
||
Comprehensive Sequencing of Great Ape Sex Chromosomes Yields Insights into Evolution and Genetic Variability
by seqadmin
Started by seqadmin, 05-29-2024, 01:32 PM
|
0 responses
27 views
0 likes
|
Last Post
by seqadmin
05-29-2024, 01:32 PM
|
||
Started by seqadmin, 05-24-2024, 07:15 AM
|
0 responses
214 views
0 likes
|
Last Post
by seqadmin
05-24-2024, 07:15 AM
|
Comment