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Does IGV show all reads?
Max read count: The maximum value that can be set is 100,000 reads per window. IGV uses reservoir sampling, so that all reads are kept if the read count is less than Max read count.
What does a deletion look like in IGV?
Deletions. So in the case of a deletion, the inferred insert size is GREATER THAN the expected insert size. In IGV such an event might look like the following. Reads that are colored red have larger than expected inferred sizes, and therefore indicate possible deletions.
How do I visualize BAM files in IGV?
Visualizing a BED, BAM or GTF file from a URL In IGV, select File > Load from URL … A window will pop up and ask you to give the correct URL for the file you want to view. Paste in the URL and the file will be downloaded. From the file extension, IGV will automatically treat the information in the file accordingly.
What do colors mean in IGV?
” IGV colors paired-end alignments whose inferred insert size is larger than expected or whose mate read is aligned to a different chromosome. A read with a mate aligned to a different chromosome is color-coded to identify the other chromosome.”
How do I convert genome to IGV?
Click Genomes>Create . genome File. IGV displays the a window where you enter the information. Enter an ID and a descriptive name for the genome.
How do I zoom out in IGV?
Click the “home” icon to zoom out to the whole-genome view. From the whole-genome view, zoom to a chromosome by clicking its label.
What does coverage mean in IGV?
alignment read visibility threshold
Coverage Track. When IGV is zoomed to the alignment read visibility threshold (by default, 30 KB), the coverage track displays the depth of the reads displayed at each locus as a gray bar chart.
What does Samtools view do?
The samtools view command is the most versatile tool in the samtools package. It’s main function, not surprisingly, is to allow you to convert the binary (i.e., easy for the computer to read and process) alignments in the BAM file view to text-based SAM alignments that are easy for humans to read and process.
How does the Integrative Genomics Viewer ( IGV ) work?
Database indexes enable one to rapidly pull specific subsets of the data from them. The Integrative Genomics Viewer is a program for reading several types of indexed database information, including mapped reads and variant calls, and displaying them on a reference genome.
How to filter alignments by read group in IgV?
Filter alignments by read group: Select to hide alignments that match the read groups listed in the filter file. The filter file is a text file that lists read groups, one per line. This option means that IGV does not load the alignments associated with these read groups.
How is insert size used in Integrative Genomics?
It is based on set base pair values or computed from the size distribution of a library against the reference genome as defined in the Alignment Preferences Panel. The inferred insert size can be used to detect structural variants, such as: IGV uses color coding to flag anomalous insert sizes.
How to interpret color by insert size in IgV?
The inferred insert size can be used to detect structural variants, such as: IGV uses color coding to flag anomalous insert sizes. When you select Color alignments > by insert size in the popup menu, the default coloring scheme is: