Dear Edzer J. Pebesma,

Thanks for your response. I did not do that. In fact, I don't understand
"centred around (0,0)". Would you please tell me how to do  that? 
Thanks in advance.

With regards,
Shakil

"Edzer J. Pebesma" wrote:
> 
> Did you make sure that the location with coordinates
> (0,0) is in the centre of your mask map?
> --
> Edzer

-- 

 ****************************************************************
             SHAKIL AHMAD ROMSHOO,                 
   MUSHIAKE LAB., IIS, UNIVERSITY OF TOKYO,              
 B Building, 4-6-1, Komaba, Meguro-ku, Tokyo, Japan   
    Tel. No.: Lab; +81-3-5452-6001 ex. 58040,      
Fax: +81-3-5452-6383, Residence;  +81-489-58-0204                  
                         
 ****************************************************************

Reply via email to