Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • dpryan
    Devon Ryan
    • Jul 2011
    • 3478

    #16
    Originally posted by DrS View Post
    It doesn't like the last line from these few lines (the lines before it are fine... this is actually the 74th line of my sam file)
    Are those two reads sufficient to cause the crash, or are the earlier lines also required? Also, could you post the exact command you used that caused the crash (with options, like strandedness)?

    Comment

    • dpryan
      Devon Ryan
      • Jul 2011
      • 3478

      #17
      FYI, I was able to reproduce this crash in HTSeq-0.5.3 but it ran correctly in HTSeq-0.5.4. If you're not using the most up-to-date version, try upgrading and see if that fixes things.

      Comment

      • DrS
        Member
        • Mar 2013
        • 17

        #18
        Thank you - I'll try to do that. And yes, those were sufficient to make it crash.

        Comment

        • DrS
          Member
          • Mar 2013
          • 17

          #19
          Public License v3. Part of the 'HTSeq' framework, version 0.5.4p1.


          Already running 0.5.4

          Comment

          • dpryan
            Devon Ryan
            • Jul 2011
            • 3478

            #20
            The most recent version is 0.5.4p3

            Comment

            • DrS
              Member
              • Mar 2013
              • 17

              #21
              Aha - on your website it only has up to p2, and the p2 was a Windows fix, where I'm on Linux. I'll download and let you know, but it may take a little while (working on other things now as well)

              Comment

              • dpryan
                Devon Ryan
                • Jul 2011
                • 3478

                #22
                Originally posted by DrS View Post
                Aha - on your website
                I'm not the author, I just use htseq-count pretty frequently (I've never met the author!), so I'd like to get bugs fixed before they affect me too

                Comment

                • DrS
                  Member
                  • Mar 2013
                  • 17

                  #23
                  I just downloaded and installed the one from:


                  The file is:
                  HTSeq-0.5.4p3.tar.gz

                  The version still reports as:
                  Written by Simon Anders ([email protected]), European Molecular Biology
                  Laboratory (EMBL). (c) 2010. Released under the terms of the GNU General
                  Public License v3. Part of the 'HTSeq' framework, version 0.5.4p1.


                  .... And I still get the crash.

                  100000 GFF lines processed.
                  200000 GFF lines processed.
                  296737 GFF lines processed.
                  Warning: Malformed SAM line: MRNM != '*' although flag bit &0x0008 set
                  Warning: Malformed SAM line: RNAME != '*' although flag bit &0x0004 set
                  Segmentation fault



                  I'm thinking I'm going to have to try another aligner and see if that works

                  Comment

                  • dpryan
                    Devon Ryan
                    • Jul 2011
                    • 3478

                    #24
                    It's actually an easy fix to get the most recent version running. If you open the htseq-count file in a text editor, you'll see that it mentions the exact version (you can have multiple versions installed). Assuming everything with the newest version is setup correctly, you can just change "p1" to "p3" and things should work. BTW, which aligner are you using? I've had good experience with tophat2 and, more recently, STAR.

                    Comment

                    • DrS
                      Member
                      • Mar 2013
                      • 17

                      #25
                      I was using Bowtie2 - paired-end genomic data from a 250x250 miSeq run.
                      I've asked others to chime in if they're also only having problems with paired-end data.

                      I'll try STAR next, but have meetings most of today so it might take a day or two to get to it.

                      And sorry about the mistaken identity

                      Comment

                      • dpryan
                        Devon Ryan
                        • Jul 2011
                        • 3478

                        #26
                        Just keep in mind that you'll need rather more RAM for STAR, though it can finish a sample in the time it takes to grab a coffee.

                        Comment

                        • DrS
                          Member
                          • Mar 2013
                          • 17

                          #27
                          RAM is not an issue in my group.

                          Comment

                          • DrS
                            Member
                            • Mar 2013
                            • 17

                            #28
                            Just as an update - I ended up using STAR and had no problems with it. Still no idea why I was having problems with the other data.

                            Comment

                            • newbietonextgen
                              Member
                              • Nov 2010
                              • 56

                              #29
                              GMAP and HTseq problems

                              I use GMAP to align my RNA-seq and then I use HT-Seq to get the counts. When i run the HTseq count script, it always complains of the sam file not being sorted.

                              I have used from picard tools, samtools and sort command to sort my SAM file but still it complains.

                              Picard tools (SortSAM)
                              SAmtools (convert from SAM to BAM, sort BAM file, Index BAM file, reconvert to BAM file).


                              Any reason? The HT-Seq count tools works well with tophat alignments

                              Comment

                              Latest Articles

                              Collapse

                              • SEQadmin2
                                From Collection to Sequencing: Why Sample Preparation and Preservation Define Sequencing Data
                                by SEQadmin2


                                Data variability is still an issue in sequencing technologies despite the advances in reproducibility and accuracy of these platforms. But the problem does not originate in the sequencing itself, but in the previous steps, before the sample reaches the sequencer.


                                The first step is collection, followed by preservation and sample preparation for analysis. Most scientists overlook those steps, but not being careful might just be skewing the experiment’s results.
                                ...
                                06-02-2026, 10:05 AM
                              • SEQadmin2
                                Single-Cell Sequencing at an Inflection Point: Early Impacts of New Platforms and Emerging Trends
                                by SEQadmin2


                                With the launch of new single-cell sequencing platforms in 2026, the field stands at an exciting inflection point. This article surveys the most impactful advances in the field and discusses how they’re reshaping research in cancer, immunology, and beyond.


                                Introduction

                                Single-cell sequencing technologies have undergone remarkable advances over the past decade, transitioning from low-throughput experimental approaches to highly scalable platforms capable of...
                                05-22-2026, 06:42 AM
                              • SEQadmin2
                                Environmental Genomics in the Age of NGS: From Microbes to Conservation Strategies
                                by SEQadmin2

                                Studying ecosystems means dealing with complex, multi-species communities that are hard to observe at scale. This complexity, however, hides many important questions to be answered, from how biogeochemical cycles work and how climate change can affect species distribution to how conservation strategies can work best.


                                Genomics, particularly since the expansion of NGS, has transformed ecosystem ecology. By sequencing environmental DNA, we can now assess biodiversity without direct...
                                05-06-2026, 09:04 AM

                              ad_right_rmr

                              Collapse

                              News

                              Collapse

                              Topics Statistics Last Post
                              Started by SEQadmin2, Today, 08:59 AM
                              0 responses
                              10 views
                              0 reactions
                              Last Post SEQadmin2  
                              Started by SEQadmin2, 06-02-2026, 12:03 PM
                              0 responses
                              21 views
                              0 reactions
                              Last Post SEQadmin2  
                              Started by SEQadmin2, 06-02-2026, 11:40 AM
                              0 responses
                              17 views
                              0 reactions
                              Last Post SEQadmin2  
                              Started by SEQadmin2, 05-28-2026, 11:40 AM
                              0 responses
                              31 views
                              0 reactions
                              Last Post SEQadmin2  
                              Working...