3 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
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16 * PURPOSE. See the GNU General Public License for more details.
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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> menu entry in
31 an alignment window to open the feature settings dialog box, which
32 allows you to precisely control the presence and appearance of
33 sequence features for the current alignment.
36 <img src="featureSettings.gif" width="400" height="452"> <br>
37 Sequence Feature Settings for the Jalview Application</img>
40 The top section of the dialog box lists all the sequence feature
41 groups, along with a tickbox for each that controls whether its
42 features are displayed. The table in the middle lists all the
43 features in the currently selected groups, along with their display
44 style and whether they are currently being displayed (only the
45 ticked features and groups are displayed). <strong><em>You
46 can change the colour or shading style used for a feature in the
47 associated alignment by clicking on its colour box.</em></strong>
50 <a name="selectbyfeature"><strong><em>Selecting
51 alignment columns by feature</em></strong></a><br> <strong>Double-clicking
52 a feature type</strong> in the <strong>Feature Settings</strong> dialog
53 allows you to select columns in the alignment that contain (or do
54 not contain) features of that type. If a region of the alignment is
55 currently selected, then only features in the current selection will
56 be searched. The following keys affect the way in which selections
59 <li>Hold down <strong>Alt</strong> to select columns not
60 containing features of a particular type.
62 <li>Hold down <strong>Shift</strong> to add columns to the
65 <li>Press <strong>Command/Windows key</strong> to toggle column
69 Options are also provided in the feature's pop-up menu (see below).
71 <em>Select columns by feature was added in Jalview 2.8.1</em>
74 <strong><em>Feature settings pop-up menu</em></strong><br> <strong>Right-click</strong>
75 on a feature to open a pop-up menu that allows you to
77 <li>Hide, show and select columns containing that feature</li>
78 <li>Sort the alignment or current selection using that feature
80 <li>Toggle the type of colouring used for the feature</li>
83 Features may be highlighted with either a single colour or a <a
84 href="featureschemes.html">feature colourscheme</a> based on
85 either the scores associated with that feature or from the feature's
86 description (e.g. to distinguish different names associated with a
90 <strong><a name="sortbyfeature">Ordering alignment by
91 features</a></strong><br> The 'Seq Sort by Score' and 'Seq Sort by
92 Density' buttons will sort the alignment based on the average score
93 or total number of currently active features and groups on each
94 sequence. To order the alignment using a specific feature type, use
95 the <em>sort by ..</em> entries in the pop-up menu for that type.<br>
96 <em>Feature sorting and graduated feature colouring were
97 introduced in Jalview 2.5</em>
101 <strong>Transparency and Feature Ordering</strong>
103 <p>It is important to realise that sequence features are often not
104 distinct and often overlap (for example, a metal binding site
105 feature may be attached to one position along a stretch of sequence
106 marked with a secondary structure feature).</p>
108 The ordering of the sequence features in the dialog box list is the
109 order used by Jalview for rendering sequence features. A feature at
110 the bottom of the list is rendered <em>below</em> a feature higher
111 up in the list.<br> <em><strong>You can change
112 the order of a feature by dragging it up and down the list with
113 the mouse (not applet)</strong></em>.
116 The <strong><em>Optimise order</em></strong> button (currently only
117 available in the application) will re-order the feature render
118 ordering based on the average length of each feature type.
121 The <strong><em>transparency slider setting</em></strong> controls
122 the visibility of features rendered below other features. Reducing
123 the transparency will mean that features at the top of the list can
124 obscure features lower down, and increasing it allows the user to
125 'see through' the upper layers of a set of features.
128 <strong><em>You can save all features, with their
129 current colours and visibility in a Jalview format file. </em></strong>