[Geotiff] pleae help me about geotiff

[zhang lihui]

hi,

   i want to read geotiff in java, if i have a coordinate value(just like 
latitude and longtitude),then i read the image data around the value, i 
down the geotiff-jai.jar,but i have not doc about it ,and how to use 
it,please help me,

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