2 * Jalview - A Sequence Alignment Editor and Viewer
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3 * Copyright (C) 2005 AM Waterhouse, J Procter, G Barton, M Clamp, S Searle
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5 * This program is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU General Public License
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7 * as published by the Free Software Foundation; either version 2
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8 * of the License, or (at your option) any later version.
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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19 package jalview.util;
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21 import jalview.datamodel.*;
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28 * @version $Revision$
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30 public class Comparison
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32 /** DOCUMENT ME!! */
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33 public static String GapChars = " .-";
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38 * @param ii DOCUMENT ME!
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39 * @param jj DOCUMENT ME!
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41 * @return DOCUMENT ME!
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43 public static float compare(SequenceI ii, SequenceI jj)
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45 return Comparison.compare(ii, jj, 0, ii.getLength() - 1);
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49 * this was supposed to be an ungapped pid calculation
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50 * @param ii SequenceI
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51 * @param jj SequenceI
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56 public static float compare(SequenceI ii, SequenceI jj, int start, int end)
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58 String si = ii.getSequence();
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59 String sj = jj.getSequence();
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61 int ilen = si.length() - 1;
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62 int jlen = sj.length() - 1;
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64 while (jalview.util.Comparison.isGap(si.charAt(start + ilen)))
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69 while (jalview.util.Comparison.isGap(sj.charAt(start + jlen)))
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80 for (int j = 0; j < jlen; j++)
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82 if (si.substring(start + j, start + j + 1).equals(sj.substring(start +
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91 pid = (float) match / (float) ilen * 100;
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95 for (int j = 0; j < jlen; j++)
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97 if (si.substring(start + j, start + j + 1).equals(sj.substring(start +
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106 pid = (float) match / (float) jlen * 100;
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113 * this is a gapped PID calculation
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115 * @param s1 SequenceI
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116 * @param s2 SequenceI
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119 public final static float PID(String seq1, String seq2)
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121 return PID(seq1, seq2, 0, seq1.length());
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124 static final int caseShift = 'a' - 'A';
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126 // Another pid with region specification
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127 public final static float PID(String seq1, String seq2, int start, int end)
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130 int s1len = seq1.length();
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131 int s2len = seq2.length();
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133 int len = Math.min(s1len, s2len);
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142 start = len - 1; // we just use a single residue for the difference
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151 for (int i = start; i < len; i++)
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153 chr1 = seq1.charAt(i) ;
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155 chr2 = seq2.charAt(i) ;
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157 if ('a' <= chr1 && chr1 <= 'z')
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159 // TO UPPERCASE !!!
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160 //Faster than toUpperCase
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163 if ('a' <= chr2 && chr2 <= 'z')
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165 // TO UPPERCASE !!!
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166 //Faster than toUpperCase
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171 if (chr1!=chr2 && !isGap(chr1) && !isGap(chr2) )
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177 return ( (float) 100 * (len - bad)) / len;
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183 * @param c DOCUMENT ME!
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185 * @return DOCUMENT ME!
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187 public static boolean isGap(char c)
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189 return (c == '-' || c == '.' || c == ' ') ? true : false;
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192 public static boolean isNucleotide(SequenceI [] seqs)
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194 int i = 0, iSize = seqs.length, j, jSize;
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195 float nt = 0, aa = 0;
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199 jSize = seqs[i].getLength();
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200 for (j = 0; j < jSize; j++)
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202 c = seqs[i].getCharAt(j);
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203 if ('a' <= c && c <= 'z')
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206 if (c == 'A' || c == 'G' || c == 'C' || c == 'T' || c == 'U')
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208 else if (!jalview.util.Comparison.isGap( seqs[i].getCharAt(j)))
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216 if ( (nt / (nt + aa)) > 0.85f)
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