ax ay az bx by bz cx cy cz dx dy dz ex ey ez Hid PX PY PZ
1 330 295 998 0 0 0 0 0 0 0 0 0 0 0 0 0 279.6626 310.3374 923.4111
2 0 0 0 260 375 941 0 0 0 0 0 0 0 0 0 0 279.6626 310.3374 923.4111
3 0 0 0 245 375 949 0 0 0 0 0 0 0 0 0 0 279.6667 310.2424 924.7394
4 330 295 998 0 0 0 0 0 0 0 0 0 0 0 0 0 279.6667 310.2424 924.7394
對於相同的PX,PY和PZ值我要合併的行 EG的輸出應該合併多行與一些類似的列值
ax ay az bx by bz cx cy cz dx dy dz ex ey ez Hid PX PY PZ
1 330 295 998 260 375 941 0 0 0 0 0 0 0 0 0 0 279.6626 310.3374 923.4111
2 330 295 998 245 375 949 0 0 0 0 0 0 0 0 0 0 279.6667 310.2424 924.7394
你不說你要輸出什麼,但怨婦可以看看join()方法從dplyr包的https://stat545-ubc.github。 IO /位001_dplyr-cheatsheet.html – MLavoie
另請參閱:http://stackoverflow.com/questions/9723208/aggregate-multiple-variables-simultaneously – Jaap