Example surface plots of DLR elevation model of comet 19P/Borrelly             
                                                                               
                                                                               
The files included here, with names 'dlrsurfaceXXX.png' are basic              
shaded surface plots of the elevation data contained in the                    
dlrdem.tab data file.  This is a simple representation of the shape            
of the areas of the surface of comet 19P/Borrelly that were visible            
during the Deep Space 1 encounter.                                             
                                                                               
The images were created using the shade_surf routine in IDL.  First,           
the map was read into IDL, and then rotated to place it in the same            
orientation as the NEAR_1 frame.  The surface plot was generated with          
a viewing location 60 degrees above the X-Y plane and an azimuthal             
position given by the XXX in the filename.                                     
                                                                               
IDL Commands used to generate these images are of the form:                    
                                                                               
Read the elevation map into an IDL array named shape1                          
IDL> shape1 = shape1[60:154,48:171]                                            
IDL> shape1 = rotate(shape1,7)                                                 
IDL> x = findgen(95)                                                           
IDL> y = findgen(124)                                                          
IDL> shade_surf,shape1,x,y, ax=60,az=0,$                                       
       xrange=[0,94], yrange=[0,123],zrange=[0,5000],$                         
       xstyle=-1,ystyle=-1,zstyle=-1