Re: [R] from points in Lon/Lat to physical distance in dist class

2011-11-08 Thread Mao Jianfeng
-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] > On > Behalf Of Mao Jianfeng > Sent: Tuesday, November 08, 2011 8:22 AM > To: r-help@r-project.org > Cc: bossa.pack...@gmail.com > Subject: [R] from points in Lon/Lat to physical distance in dist class > > Dea

Re: [R] from points in Lon/Lat to physical distance in dist class

2011-11-08 Thread David L Carlson
] On Behalf Of Mao Jianfeng Sent: Tuesday, November 08, 2011 8:22 AM To: r-help@r-project.org Cc: bossa.pack...@gmail.com Subject: [R] from points in Lon/Lat to physical distance in dist class Dear R-listers, Here, I would like to hearing helps from you. I have GPS data (multiple points in the geogra

[R] from points in Lon/Lat to physical distance in dist class

2011-11-08 Thread Mao Jianfeng
Dear R-listers, Here, I would like to hearing helps from you. I have GPS data (multiple points in the geographic scale) in longitude/latitude. I intend to calculate distance (in kilometer) among such points and output the distance matrix in dist class. I have gotten some progress, but I still ca