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23 <title>The Alignment Calculations Dialog</title>
27 <strong>The Alignment Calculations Dialog</strong>
30 alt="Alignment Calculations dialog box - opened via Calculations->Tree or PCA..."
31 src="calculatedialog.png" width="350" height="241">
33 The <strong>Calculations Dialog</strong> (shown above) is opened via
34 the <strong>Calculations→Calculate Tree or PCA...</strong>
38 It allows you to select the type of alignment analysis calculation (<a
39 href="pca.html">PCA</a> or <a href="tree.html">Tree</a>), and the
40 sequence similarity score model that will be used to perform the
44 <strong>Adding additional score models</strong><br />Jalview can
45 import substitution matrices in both <a
46 href="http://www.genome.jp/aaindex/aaindex_help.html">AAindex</a>
47 and NCBI format (see e.g. <a
48 href="http://ftp.ncbi.nlm.nih.gov/blast/matrices/">ftp://ftp.ncbi.nlm.nih.gov/blast/matrices/</a>).
49 In Jalview 2.10.2, the easiest way to import new models is to drag
50 the score model file onto any alignment window. See the <a
51 href="scorematrices.html">Substitution Matrices Documentation</a>