Introduction
Most objects in the IGB display can be selected by clicking on them. These include annotations, graphs, results from search sequence, and entire tracks.
When an item is selected, IGB draws a red box around it.
IGB also supports selecting and deselecting more than one item at once.
How to select an item (or items) in IGB
To select items, click the pointer icon to activate the selection cursor: 
The following are ways to select items in the Main View window using the pointer tool; selections are outlined in red.
To do this: |
Do this: |
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Select a single annotation or feature. |
Click on it. |
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Select a multi-exon gene model |
Click on a line connecting exons or on the label (if active). |
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Select a single-exon gene model |
Click an exon, right-click and choose Select parent. |
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Add to the current selection |
Shift-click to add individual items or shift and drag to add multiple items. |
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Select multiple items in the display |
Click-drag the mouse over all items you wish to select A drag must begin in the empty area, not on top of any annotation or in the coordinates track.You can use shift-click or shift-drag to select additional items. Click-dragging selects entire annotations rather than individual parts. IGB reports the number of selected items in the Selection Info box. Use this to count aligned sequences in an alignments track. |
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Deselect 1 item from a group selection. |
Shift+cntl and click on the item to be deselected, without deselecting the whole group. |
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Select a sequence region. |
Drag along the axis of the coordinates track to select a set of genomic residues. To select residues, the drag must begin in the axis tier. |
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Deselect everything. |
Click the empty background space in the viewer window. |
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Select a single graph. |
Click on its handle - the rectangle at the left inside the main view window |
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Select an entire annotation track. |
Click on its track label in the left-hand panel. |
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Selecting items activates edge matching
When you select items in the display, the edges of the selected item and all other items with edges in the same position are highlighted.
This feature helps in comparing splice variation, exon length, read location, etc.
You can change the edge match color or turn it off. See Other Options.
Selecting multiple tracks
Some track operations involve multiple tracks, such as the Join function (graph track) and Intersect (annotation tracks).
To select more than one track
- Click the label of the first track you wish to select
- Hold the SHIFT key while clicking other track labels