*/
public void run()
{
+ PrintStream ps = new PrintStream(System.out)
+ {
+ public void print(String x)
+ {
+ details.append(x);
+ }
+
+ public void println()
+ {
+ details.append("\n");
+ }
+ };
+
+ try {
details.append("PCA Calculation Mode is "
+ (jvCalcMode ? "Jalview variant" : "Original SeqSpace") + "\n");
Matrix mt = m.transpose();
eigenvector = mt.preMultiply(m2); // jalview variation on seqsmace method
}
- PrintStream ps = new PrintStream(System.out)
- {
- public void print(String x)
- {
- details.append(x);
- }
-
- public void println()
- {
- details.append("\n");
- }
- };
-
eigenvector.print(ps);
symm = eigenvector.copy();
// Now produce the diagonalization matrix
eigenvector.tqli();
+ } catch (Exception q)
+ {
+ q.printStackTrace();
+ details.append("\n*** Unexpected exception when performing PCA ***\n"+q.getLocalizedMessage());
+ details.append("*** Matrices below may not be fully diagonalised. ***\n");
+ }
details.append(" --- New diagonalization matrix ---\n");
eigenvector.print(ps);
public double[] e; // off diagonal
/**
+ * maximum number of iterations for tqli
+ *
+ */
+ int maxIter = 45; // fudge - add 15 iterations, just in case
+
+ /**
* Creates a new Matrix object.
*
* @param value
}
}
}
-
+
/**
* DOCUMENT ME!
*/
- public void tqli()
+ public void tqli() throws Exception
{
int n = rows;
{
iter++;
- if (iter == 30)
+ if (iter == maxIter)
{
- System.err.print("Too many iterations in tqli");
- System.exit(0); // JBPNote - should this really be here ???
+ throw new Exception("Too many iterations in tqli ("+maxIter+")");
}
else
{
/**
* DOCUMENT ME!
*/
- public void tqli2()
+ public void tqli2() throws Exception
{
int n = rows;
{
iter++;
- if (iter == 30)
+ if (iter == maxIter)
{
- System.err.print("Too many iterations in tqli");
- System.exit(0); // JBPNote - same as above - not a graceful exit!
+ throw new Exception ("Too many iterations in tqli2 (max is "+maxIter+")");
}
else
{
* @param args
* DOCUMENT ME!
*/
- public static void main(String[] args)
+ public static void main(String[] args) throws Exception
{
int n = Integer.parseInt(args[0]);
double[][] in = new double[n][n];