definition change in usage of GridWriter, details ask rainer

AMDiS/src/GridWriter.h

@@ -38,9 +38,9 @@ namespace AMDiS {
      * Produces a grid-based output of a dof-vector or vector of dof-vectors 
      * \param p array of world coordinates. 
      * - p[0] defines origin of grid-system.
-     * - p[1] defines first basis vector by p[1] - p[0].
-     * - p[2] defines second basis vector by p[2] - p[0] (dim >= 2).
-     * - p[3] defines third basis vector by p[3] - p[0] (dim == 3).
+     * - p[1] defines first basis vector by p[1] relatively to p[0].
+     * - p[2] defines second basis vector by p[2] relatively to p[0]. (dim >= 2).
+     * - p[3] defines third basis vector by p[3] relatively to p[0]. (dim == 3).
      * \param numPoints number of grid points for the different dirctions
      * - numPoints[0] number of grid points in the first direction
      * - numPoints[1] number of grid points in the second direction

AMDiS/src/GridWriter.hh

@@ -48,7 +48,7 @@ namespace AMDiS {
     // get basis of grid 
     for (int i = 0; i < dim; i++) {
       for (int j = 0; j < dim; j++) {
-	basis[i][j] = p[i + 1][j] - p[0][j];
+	basis[i][j] = p[i + 1][j] ; 
 	lengthBasis[i] += basis[i][j] * basis[i][j];
       }
       lengthBasis[i] = sqrt(lengthBasis[i]);
@@ -160,7 +160,7 @@ namespace AMDiS {
     // get basis of grid 
     for (int i = 0; i < dim; i++) {
       for (int j = 0; j < dim; j++) {
-	basis[i][j] = p[i + 1][j] - p[0][j];
+	basis[i][j] = p[i + 1][j] ;
 	lengthBasis[i] += basis[i][j] * basis[i][j];
       }
       lengthBasis[i] = sqrt(lengthBasis[i]);