when i use add the following command in the script,errrs were below: 
mpres@mpLimitMode = "LatLon"
mpres@mpMaxLatF  = 40                      
   mpres@mpMinLatF  = 32
  mpres@mpMinLonF  = 115
   mpres@mpMaxLonF  = 130
 
you can see  the problem is here ,the results were not the same.
how can i solve this problem ,hope for your help
 
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