X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fmath%2FMatrixI.java;fp=src%2Fjalview%2Fmath%2FMatrixI.java;h=d74a98b4909ba85697c94de032a4356f6c7ddd15;hb=d5bcc3830eab04e6db816e1c2ad8fce1dc189612;hp=0000000000000000000000000000000000000000;hpb=3ebdd4e28382e38a181aae1eed71549f603f9025;p=jalview.git

diff --git a/src/jalview/math/MatrixI.java b/src/jalview/math/MatrixI.java
new file mode 100644
index 0000000..d74a98b
--- /dev/null
+++ b/src/jalview/math/MatrixI.java
@@ -0,0 +1,59 @@
+package jalview.math;
+
+import java.io.PrintStream;
+
+public interface MatrixI
+{
+  /**
+   * Answers the number of columns
+   * 
+   * @return
+   */
+  int width();
+
+  /**
+   * Answers the number of rows
+   * 
+   * @return
+   */
+  int height();
+
+  /**
+   * Answers the value at row i, column j
+   * 
+   * @param i
+   * @param j
+   * @return
+   */
+  double getValue(int i, int j);
+
+  /**
+   * Answers a copy of the values in the i'th row
+   * 
+   * @return
+   */
+  double[] getRow(int i);
+  
+  MatrixI copy();
+
+  MatrixI transpose();
+
+  MatrixI preMultiply(MatrixI m);
+
+  MatrixI postMultiply(MatrixI m);
+
+  double[] getD();
+
+  double[] getE();
+
+  void print(PrintStream ps, String format);
+
+  void printD(PrintStream ps, String format);
+
+  void printE(PrintStream ps, String format);
+
+  void tqli() throws Exception;
+
+  void tred();
+
+}