Tracks
Tracks provide a unified framework for the visualization, comparison and analysis of genome-scale studies such as whole-genome sequencing or exome resequencing projects. Information in tracks is tied to a genomic position. Each track type supports a particular type of data, with functionality relevant to the type of data available.
When the mouse cursor is hovered over items in the graphical view of a track, information about that item and about the location the cursor is hovered over is displayed in several places (figure 28.1):
- Just below the coordinates near the top. Where relevant, the following are also displayed:
- The item name.
- The strand the item is located on.
- For items comprised of multiple parts, e.g. mRNAs containing multiple exons, the number of the part that the cursor is hovered over.
- The position of the cursor relative to the start of the item.
- In the View Area: A tooltip containing information about the item. For some track types, tooltip content can be copied to the clipboard using an option in a right-click menu.
- In the lower right corner of the Workbench frame, as relevant for the item type, including:
- The item type.
- The item name.
- The position of the cursor relative to the start of the item.
- For items comprised of multiple parts, e.g. mRNAs containing multiple exons, the number of the part that the cursor is hovered over.
- The strand the item is located on.
- The position of the cursor relative to the reference.
- Other information relevant to the item. For example, for variants, the variant type and its size.
Compatible tracks can be stacked in a Track List, supporting comparative analysis (figure 28.1). See Track lists for details about creating and working with Track Lists.
Figure 28.1: Compatible tracks have been added to a Track List and the cursor is hovered over an item in one of the tracks, revealing information about that item in three places: just under the coordinates near the top, in a tooltip near the item itself, and in the lower right corner of the Workbench frame.
Subsections
- Track types
- Track lists
- Working with tracks
- Reference data as tracks
- Convert tracks
- Graph tracks
- Merge tracks
- Modify tracks