Just figured it out: unique(cbind(bigz$lon,bigz$lat))
Nothing like posting to the list to help you solve a problem. thanks, Erin ________________________________________ From: r-sig-geo-boun...@r-project.org [r-sig-geo-boun...@r-project.org] on behalf of Hodgess, Erin [hodge...@uhd.edu] Sent: Saturday, February 15, 2014 8:30 PM To: r-sig-geo@r-project.org Subject: [R-sig-Geo] question about unique in lon/lat Hello! I have space-time data frame. Here are the first few rows: name index lon lat 1 Abilene ,TX 95.285 -99.73314 32.44874 2 Abilene ,TX 98.603 -99.73314 32.44874 3 Abilene ,TX 100.197 -99.73314 32.44874 4 Abilene ,TX 102.016 -99.73314 32.44874 5 Abilene ,TX 100.000 -99.73314 32.44874 6 Abilene ,TX 102.822 -99.73314 32.44874 7 Abilene ,TX 107.988 -99.73314 32.44874 8 Abilene ,TX 110.546 -99.73314 32.44874 9 Abilene ,TX 105.897 -99.73314 32.44874 10 Abilene ,TX 107.642 -99.73314 32.44874 11 Abilene ,TX 108.523 -99.73314 32.44874 12 Amarillo ,TX 92.486 -101.83130 35.22200 13 Amarillo ,TX 95.431 -101.83130 35.22200 14 Amarillo ,TX 97.485 -101.83130 35.22200 15 Amarillo ,TX 99.714 -101.83130 35.22200 16 Amarillo ,TX 100.000 -101.83130 35.22200 17 Amarillo ,TX 103.649 -101.83130 35.22200 18 Amarillo ,TX 105.998 -101.83130 35.22200 19 Amarillo ,TX 109.965 -101.83130 35.22200 20 Amarillo ,TX 109.325 -101.83130 35.22200 21 Amarillo ,TX 112.550 -101.83130 35.22200 22 Amarillo ,TX 112.541 -101.83130 35.22200 23 Austin ,TX 83.228 -97.74306 30.26715 24 Austin ,TX 83.232 -97.74306 30.26715 25 Austin ,TX 86.072 -97.74306 30.26715 26 Austin ,TX 93.592 -97.74306 30.26715 > My question is: is there a way to get the "unique" values from lon/lat for each city, please? Thanks, Erin [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo