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Introduction
Most objects in the IGB display can be selected by clicking on them. These include annotations, graphs and sequence regions in order to perform certain operations on them. To select items, choose the pointer tool: , 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 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. | ||||
Select an entire a multi-exon gene model instead of an exon. Directly select a whole gene by clicking on the | Click on a line connecting the exons or on the label (if active). If you mistakenly select an exon instead of a gene | ||||
Select a single-exon gene model | Click an exon, right-click anywhere within the track to open choose a menu, and and choose Select parent. | ||||
Add to the current selection | Shift-click to add individual items or shift and drag to add multiple items. | ||||
Select multiple annotations/ features. items in the display | Click and -drag the mouse around selected items. 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.
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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. | ||||
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. | ||||
Deselect everything. | Click the empty background space in the viewer window. | ||||
Select a single graph. | Click on its handle - the rectangle at the left inside the main view window | ||||
Select an entire annotation track. | Click on its track label in the left-hand panel. |
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Edge Matching
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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. is Edge Matching. This function highlights ALL features that share the same start points, and/or the same endpoints. Simply select the item of interest, and IGB will highlight all matching edges (in all tracks within the Main View window) in white (by default).
You can change the Edge Match color to one of your choice, so that it is visible on all background colors, as described in Other Options. You can also turn off Edge Match if it is interfering with creating a journal quality picture.
Selecting Multiple Tracks
There are many occasions that you will want to select edge match color or turn it off. See Other Options.
Selecting multiple tracks
Some track operations involve multiple tracks, such as the Join function for graphs or Track Operations for annotation files. This works much as the selection of individual features: use shift + click to select multiple features (Note: order matters for Graph Transformations and Track Operations). (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