diff -r 8b18b6fed090 -r 18fc834761d9 lemon/lp_base.h
--- a/lemon/lp_base.h	Mon Dec 04 15:00:24 2006 +0000
+++ b/lemon/lp_base.h	Mon Dec 04 16:48:13 2006 +0000
@@ -703,12 +703,15 @@
     virtual void _setRowCoeffs(int i, LpRowIterator b, LpRowIterator e) = 0;
     virtual void _setColCoeffs(int i, LpColIterator b, LpColIterator e) = 0;
     virtual void _setCoeff(int row, int col, Value value) = 0;
+    virtual Value _getCoeff(int row, int col) = 0;
+
     virtual void _setColLowerBound(int i, Value value) = 0;
     virtual void _setColUpperBound(int i, Value value) = 0;
 //     virtual void _setRowLowerBound(int i, Value value) = 0;
 //     virtual void _setRowUpperBound(int i, Value value) = 0;
     virtual void _setRowBounds(int i, Value lower, Value upper) = 0;
     virtual void _setObjCoeff(int i, Value obj_coef) = 0;
+    virtual Value _getObjCoeff(int i) = 0;
     virtual void _clearObj()=0;
 
     virtual SolveExitStatus _solve() = 0;
@@ -725,6 +728,9 @@
     virtual void _setMax() = 0;
     virtual void _setMin() = 0;
     
+
+    virtual bool _isMax() = 0;
+
     //Own protected stuff
     
     //Constant component of the objective function
@@ -1000,6 +1006,16 @@
       _setCoeff(_lpId(r),_lpId(c), val);
     }
 
+    /// Get an element of the coefficient matrix of the LP
+
+    ///\param r is the row of the element in question
+    ///\param c is the coloumn of the element in question
+    ///\return the corresponding coefficient
+
+    Value coeff(Row r, Col c){
+      return _getCoeff(_lpId(r),_lpId(c));
+    }
+
     /// Set the lower bound of a column (i.e a variable)
 
     /// The lower bound of a variable (column) has to be given by an 
@@ -1171,8 +1187,12 @@
     
     ///Set an element of the objective function
     void objCoeff(Col c, Value v) {_setObjCoeff(_lpId(c),v); };
+
+    ///Get an element of the objective function
+    Value objCoeff(Col c) {return _getObjCoeff(_lpId(c)); };
+
     ///Set the objective function
-    
+
     ///\param e is a linear expression of type \ref Expr.
     ///\bug Is should be called obj()
     void setObj(Expr e) {
@@ -1187,6 +1207,11 @@
     ///Minimize
     void min() { _setMin(); }
 
+    ///Query function: is this a maximization problem?
+    bool is_max() {return _isMax(); }
+
+    ///Query function: is this a minimization problem?
+    bool is_min() {return !is_max(); }
     
     ///@}