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 _    _      ___                 ___     __   _   
| |  | ||   / _ \\      ___     / _ \\  | || | || 
| |/\| ||  | / \ ||    /   ||  | / \ || | '--' || 
|  /\  ||  | \_/ ||   | [] ||  | \_/ || | .--. || 
|_// \_||   \___//     \__ ||   \___//  |_|| |_|| 
`-`   `-`   `---`       -|_||   `---`   `-`  `-`  
                         `-`

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發送短信 : Applied Spatial Data Analysis with R