3 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
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23 <title>Sequence Feature Settings Dialog Box</title>
27 <strong>Sequence Feature Settings Dialog Box</strong>
30 Select <strong>View→Feature Settings...</strong> in an alignment
31 window to open the feature settings dialog box, which allows
32 precise control of the visibility and appearance of sequence features for
36 <img src="featureSettings.png" width="400"> <br/>
37 Sequence Feature Settings for the Jalview Application (version 2.11)
39 <p>The top section of the dialog box lists all the sequence feature
40 groups, along with a tickbox for each that controls whether its
41 features are displayed. When many groups are present, their names may
42 be truncated, but the full name is shown in a tooltip when the mouse
43 hovers over their checkbox.</p>
44 <p><em>Feature colour schemes and filters</em>
46 The table in the middle lists all the feature types in the currently
47 selected groups, along with their display style, any configured
48 filters, and a tickbox indicating whether the type is enabled for
49 display.</p><p>Features may be highlighted with either a single colour or a <a
50 href="featureschemes.html">feature colourscheme</a> based on
51 either the scores associated with that feature or from the feature's
52 description (e.g. to distinguish different names associated with a
53 DOMAIN feature).The colour used for a feature can
54 be changed by clicking on its <strong><em>colour box</em></strong>. To configure the shading
55 style or filter for a feature, click its <strong><em>configuration</em></strong> box.
58 <em>Feature settings pop-up menu</em><br> <strong>Right-click</strong>
59 on a feature to open a pop-up menu that allows you to
61 <li>Hide, show and select columns containing that feature</li>
62 <li>Sort the alignment or current selection according to count or score for that feature
67 <strong>Transparency and Feature Ordering</strong>
69 <p>Sequence features represent a variety of different types of
70 positional annotation, and often overlap. For example, a metal binding
71 site feature may be attached to one position along a stretch of
72 sequence marked with a secondary structure feature.</p>
74 The ordering of the sequence features in the dialog box list is the
75 order used by Jalview for rendering sequence features. A feature at
76 the bottom of the list is rendered <em>below</em> a feature higher
77 up in the list.<br> <em><strong>You can change
78 the order of a feature by dragging it up and down the list with
79 the mouse.</strong></em>
82 Use the <strong><em>Optimise order</em></strong> button to adjust the
83 feature render ordering to place features that on average cover shorter regions
84 of sequence above features annotating longer regions.
86 <p><a name="transparency"></a>
87 The <strong><em>transparency slider</em></strong> controls
88 the visibility of features rendered below other features. Reducing
89 the transparency will mean that features at the top of the list can
90 obscure features lower down, and increasing it allows the user to
91 'see through' the upper layers of a set of features.
94 <strong><em>You can save all features, with their
95 current colours and visibility in a Jalview format file. </em></strong>
98 <a name="selectbyfeature"><strong>Selecting alignment
99 columns by feature</strong></a>
102 Double-clicking a <strong>feature type</strong> in the <strong>Feature
103 Settings</strong> dialog allows you to select columns in the
104 alignment that contain (or do not contain) features of that type that
105 are currently visible (e.g. not filtered out or otherwise excluded due
106 to an applied colour scheme threshold). If a region of the alignment
107 is currently selected, then only features in the current selection
108 will be searched. The following keys affect the way in which
109 selections are made:<ul>
110 <li>Hold down <strong>Alt</strong> to select columns not
111 containing features of a particular type.
113 <li>Hold down <strong>Shift</strong> to add columns to the
116 <li>Press <strong>Command/Windows key</strong> to toggle column
117 selection state (XOR)
120 Options are also provided in the feature's pop-up menu (see below).
122 <em>Select columns by feature was added in Jalview 2.8.1</em>
125 <strong><a name="sortbyfeature">Ordering alignment by
126 features</a></strong>
129 The 'Seq Sort by Score' and 'Seq Sort by Density' buttons will sort
130 the alignment based on the average score or total number of
131 currently active features and groups on each sequence. A dialog box
132 is shown if there are no features to use for sorting sequences. To
133 order the alignment using a specific feature type, use the
134 <em>sort by ..</em> entries in the pop-up menu for that type.<br> <br>When
135 a selected region exists, only features lying within the columns
136 containing the selected region will be considered, but all sequences
137 (including those not selected) will be reordered.
138 <em>Feature sorting and graduated feature colouring were
139 introduced in Jalview 2.5</em>