Select annotations, graphs and sequence regions in order to perform certain operations on them. To select items, choose the pointer tool: 
The following are ways to select items in the viewer window using the pointer tool.
To do this: |
Do this: |
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Select a single annotation. |
Click on it. |
Select an entire gene model instead of an exon. |
Directly select a whole gene by clicking on the line connecting the exons. If you mistakenly select an exon instead of a gene, right-click in the blank background or on a selected annotation and choose Select parent. |
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. |
Select multiple annotations or graphs. |
Drag the mouse through a region to select all enclosed items. For graphs, the drag should include the graph handle. 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. Tip: IGB reports the number of selected items in the lower left corner. Use this to count aligned sequences in an alignments track. |
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. |
Add to the current selection |
Shift-click to add individual items or shift and drag to add multiple items. |
Open a pop-up menu |
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Highlighting matching endpoints
To see if different data sources show the same start and endpoints for an annotation:
- Select an item.
Matching edges of corresponding items in all tracks being viewed will be highlighted
- By default, the highlight color is white, which works well on a black background. If you change the background color, you may want to change the edge-matching color as well.
Use View menu > Adjust edge match fuzziness > Edge Sensitivity Adjuster dialog box > Edge match colors > Standard.
To specify the degree of closeness required for a match (how many base pairs difference is still considered a match):
- Choose View menu > Adjust edge match fuzziness.
- Slide the slider to the maximum number of base pairs difference that you want to consider a match.
By default, if edge match fuzziness is adjusted, all matching edges are highlighted in gray rather than in white. This color can also be changed using View menu > Adjust edge match fuzziness > Edge Sensitivity Adjuster dialog box > Edge match colors > Fuzzy matching.