FFRAD COMMENTS
*-- Author : Stephen Burke
      SUBROUTINE FFRAD(JDIG,NPLAN)
*-----------------------------------------Updates 27/07/93-------                                             
**: FFRAD  30907 RP. Farm changes.                                                                            
*-----------------------------------------Updates 03/05/93-------                                             
**: FFRAD 30907 SB.  Radius ignored if there are planar hits.                                                 
*-----------------------------------------Updates 06/08/92-------                                             
**: FFRAD 30907 SB.  Fix bad radius bug.                                                                      
*-----------------------------------------Updates 13/02/92-------                                             
**: FFRAD 30205.SB.  ERRLOG error numbers changed.                                                            
*-----------------------------------------Updates 07/02/92-------                                             
**: FFRAD 30205.SB.  Remove unused FKMEAS sequence.                                                           
*-----------------------------------------Updates 24/01/92-------                                             
**: FFRAD 30205.SB.  ERRLOG message format changed.                                                           
*-----------------------------------------Updates----------------                                             
**********************************************************************                                        
*                                                                    *                                        
* Fill the Kalman filter arrays from the radial DIGI bank            *                                        
*                                                                    *                                        
**********************************************************************                                        
*KEEP,FKNPL.                                                                                                  
*                                                                                                             
* Per-track values can go in H1WORK; note that LTRUE and LFIRST must                                          
* be set at least per event.                                                                                  
*                                                                                                             
* This is about 36k words long; the remaining common blocks are                                               
* about 3.6k in total. Some of this could be in /H1WORK/, but the                                             
* blocks would have to be reorganised.                                                                        
*                                                                                                             
* /FKPROJ/                                                                                                    
* /FKFILT/                                                                                                    
* /FKSMTH/                                                                                                    
* /FKINT/                                                                                                     
* /FKRSID/                                                                                                    
* /FKTRUE/                                                                                                    
* /FKDBG/                                                                                                     
*KEEP,FFSTEE.                                                                                                 
*KEEP,FFGEO.                                                                                                  
*KEEP,FKFLAG.                                                                                                 
*KEEP,FKMEAS.                                                                                                 
*KEEP,FKCONS.                                                                                                 
*KEEP,FFWBI.                                                                                                  
* Work bank indices (note that INDKTR is *NOT* a work bank index!)                                            
*KEEP,BCS.                                                                                                    
*KEEP,CNSTBF.                                                                                                 
*KEEP,STFUNCT.                                                                                                
*     index of element before row number IROW                                                                 
*     index of L'th element  of row number IROW                                                               
*     L'th integer element of the IROW'th row of bank with index IND                                          
*     L'th real element of the IROW'th row of bank with index IND                                             
*KEEP,STFCLW.                                                                                                 
* statement functions acting on the BOS COMMON LW                                                             
*     index of element before row number LWROW                                                                
*     index of L-th element of row number LWROW                                                               
*     L-th integer element of the LWROW'th row in bank with index LND                                         
*     L-th real element of the LWROW'th row in bank with index LND                                            
*                                                                                                             
*KEEP,FTFUNCT.                                                                                                
*     Statement functions for RADIAL Chamber data access.                                                     
*     Using Channel Number J                                                                                  
*     Module, Wedge-pair and Z-plane numbers...                                                               
*     Statement function for obtaining WEDGE numbers(0-47) of                                                 
*     wires at plus and minus ends of Cell numbers                                                            
*     Statement function for obtaining IOS wire number (1-36)                                                 
*     Statement functions for PLANAR Chamber data access.                                                     
*     Using Channel Number J                                                                                  
*     Module, orientation, W-cell and Z-plane numbers...                                                      
*     IPSMD in range 0:8 Planar module number.                                                                
*                                                                                                             
*     IOS wire number (runs from 0 to 36)                                                                     
* SB plane numbers (1-72) from cell number                                                                    
* Module, orientation, wire and (typical) cell number from plane                                              
* number in the range 1-72 (planars, radials and combined)                                                    
*KEND.                                                                                                        
**********************************************************************                                        
         CALL ERRLOG(361,'F:FFRAD:  Radial digi on mapped-out plane')                                  
* Remember the digi pointer and drift sign                                                                    
*         DD = RBTAB(INDLC(2),2,JDIG)                                                                         
* Use assymetric drift                                                                                        
*         DD = -RBTAB(INDLC(2),2,JDIG)                                                                        
* Use assymetric drift                                                                                        
* Measured position and error                                                                                 
*      WMES(1,JPL)   = DD + SBTAB(INDG1(2),3+3*KWED,ICELL+1)                                                  
* Use geometric stagger (3 & 6 -> 8 & 9)                                                                      
      WMES(2,JPL)   = RR + FLOREN(RR,ABS(DD),DSIGN)
*