How are BAM files sorted in samtools index?
Most functionality while using BAM files can be described as such: BAM files are sorted by reference coordinates ( samtools sort) Sorted BAM files are indexed ( samtools index) Take a look here for a detailed manual page for each function in samtools.
Which is the best tool to work with BAM files?
Pointing a mouse to an individual alignment feature will open a tooltip with a lot of useful information about the alignment, including the CIGAR string, percent identity, and coverage. This exercise requires the use of SAMTools, a freely available package for working with BAM files.
How to add a graph to a BAM file?
The steps for this part are identical to Steps 1 and 2 in this tutorial, however with a different data file. From the File menu choose Open and select BAM files from the left side. Select button on the right that says Add a BAM file. Navigate to the BAM Test Files folder you downloaded select with_index_with_graph.
How do I export an alignment table in Bam?
From the Graphical Sequence Viewer, zoom to the desired location and select a range of interest. Right-click the selected range and click the Export Data option in the context menu. An alignment export menu will be opened. Note that BAM files are stored as alignments, so you need to select “ Alignment Table File ” in the list on the left.
How to remove low quality reads from BAM files?
This is a good way to remove low quality reads, or make a BAM file restricted to a single chromosome. We’ll be focusing on just a few of samtools functions in this series of exercises.
Which is aligner records both mapped and unmapped reads?
These steps presume that you are using a mapper/aligners such as bwa, which records both mapped and unmapped reads – make sure you check how the aligner writes it’s output to SAM/BAM format, or you may get a strange surprise in your output aligned files! The code block below details some basic samtools functionality: