页: 1
test <-
c("Env_1990:trait_KPS", "Env_1990:trait_SPSM", "Env_1990:trait_TKW",
"Env_1990:trait_Yield", "Env_1991:trait_KPS", "Env_1991:trait_SPSM",
"Env_1991:trait_TKW", "Env_1991:trait_Yield", "Env_1992:trait_KPS",
"Env_1992:trait_SPSM", "Env_1992:trait_TKW", "Env_1992:trait_Yield",
"Env_1993:trait_KPS", "Env_1993:trait_SPSM", "Env_1993:trait_TKW",
"Env_1993:trait_Yield", "Env_1994:trait_KPS", "Env_1994:trait_SPSM",
"Env_1994:trait_TKW", "Env_1994:trait_Yield", "Env_1995:trait_KPS",
"Env_1995:trait_SPSM", "Env_1995:trait_TKW", "Env_1995:trait_Yield",
"Gen_B88:Env_1990:trait_KPS", "Gen_B88:Env_1990:trait_SPSM",
"Gen_B88:Env_1990:trait_TKW", "Gen_B88:Env_1990:trait_Yield",
"Gen_B88:Env_1991:trait_KPS", "Gen_B88:Env_1991:trait_SPSM",
"Gen_B88:Env_1991:trait_TKW", "Gen_B88:Env_1991:trait_Yield",
"Gen_B88:Env_1992:trait_KPS", "Gen_B88:Env_1992:trait_SPSM",
"Gen_B88:Env_1992:trait_TKW", "Gen_B88:Env_1992:trait_Yield",
"Gen_B88:Env_1993:trait_KPS", "Gen_B88:Env_1993:trait_SPSM",
"Gen_B88:Env_1993:trait_TKW", "Gen_B88:Env_1993:trait_Yield")
我只想选择从<代码>开始的行文。 Env_。 我在<代码>上尝试了这项守则。 R
grep(pattern="[Env_]", x=test).
该守则给我所有各行,因为<代码>。 Env_ 载于每一行名。 我想知道,如何选择只从<代码>开始的行文。 Env_。 事先感谢您的帮助。