This article explains three ways you can use the Integrative Genomics Viewer (IGV) to examine tracks from BAM (.bam) files in Terra.

1. From the workspace Data tab
2. By adding a startup script to a notebook runtime creation
3. From the IGV web app

1. From the workspace Data tab

Data files in the cloud linked to your workspace will appear in the data table of the Data tab of your workspace. To view these files in IGV, select a row from the table that has both a BAM and BAM.bai and choose the "Open files with IGV option" from the modal.

- Navigate to the region of interest:

2.  By adding a startup script to a notebook runtime creation

You can view in IGV from a notebook by adding a startup script. The startup script that you would need to put in a publicly accessible Google Cloud Storage bucket is here:

#!/bin/bash 
 
 pip3 install igv-jupyter
 
 jupyter serverextension enable --py igv --sys-prefix
 jupyter nbextension install --py igv --sys-prefix
 jupyter nbextension enable --py igv --sys-prefix

To add a script to a notebook, click on the gear icon in the "Notebook Runtime" box in the corner. In the compute power box, select the Custom profile, and paste your Startup Script url into the box.

3. Using the IGV web app

You can also use IGV in a web browser by going to http://igv.org/app/. First select "Genomes" and choose the appropriate reference genome. Then select "Tracks" --> "URL":

Paste the file locations from your data table using "Copy Link Address" in the dropdown menu:

The tracks are now viewable in the web browser:

You can save the tracks for viewing later by pressing "Share" at the top menu. 

To see the example IGV web browser file created from this example, go to this URL: http://bit.ly/2IqsQqM.