--- trunk/madProps/cosCorr.c	2002/07/23 20:10:49	46
+++ trunk/madProps/cosCorr.c	2002/08/29 17:21:54	103
@@ -6,17 +6,12 @@ void cosCorr( char* out_prefix, char* atom1, char* ato
 #include "cosCorr.h"
 
 void cosCorr( char* out_prefix, char* atom1, char* atom2,
-	      struct xyz_frame* frames, int nFrames ){
+	      struct xyz_frame* frames, int nFrames,
+	      int startFrame, int endFrame ){
   
   
   int i,j,k;
-    
-  double atom1Dens;
-  double atom2Dens;
-  
-  double atom1Constant;
-  double atom2Constant;
-  
+      
   double nAtom1;
   double nAtom2;
   
@@ -91,18 +86,10 @@ void cosCorr( char* out_prefix, char* atom1, char* ato
 	     atom2 );
     exit(8);
   }
-  
-  // calculate some of the constants;
-  
-  atom1Dens = nAtom1 / boxVol;
-  atom2Dens = nAtom2 / boxVol;
-  
-  atom1Constant = ( 4.0 * M_PI * atom1Dens ) / 3.0;
-  atom2Constant = ( 4.0 * M_PI * atom2Dens ) / 3.0;
-  
+    
   // calculate the histogram
   
-  for( i=0; i<nFrames; i++){
+  for( i=startFrame; i<endFrame; i++){
     for( j=0; j<(frames[i].nAtoms-1); j++ ){
       
       if( !strcmp( frames[0].names[j], atom1 ) ){