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我有一個csv
文件,我只想提取句子的時間戳,其中包含加上該句子中的水果名稱。我怎樣才能做到這一點R(或是否有這樣做的一個更快的方法,那是什麼?)R中的數據清理
rosbagTimestamp,data
1438293900729698553,robot is in motion toward [strawberry]
1438293900730571638,Found a plan for avocado in 1.36400008202 seconds
1438293900731434815,current probability is greater than EXECUTION_THRESHOLD
1438293900731554567,ready to execute am original plan of len = 33
1438293900731586463,len of sub plan 1 = 24
1438293900731633713,len of sub plan 2 = 9
1438293900732910799,put in an execution request; now updating the dict
1438293900732949576,current_prediciton_item = avocado
1438293900733070339,current_item_probability = 0.880086981207
1438293901677787230,current probability is greater than PLANNING_THRESHOLD
1438293901681590725,robot is in motion toward [avocado]
1438293902689233770,we have received verbal request [avocado]
1438293902689314002,we already have a plan for the verbal request
1438293902689377800,debug
1438293902690529516,put in the final motion request
1438293902691076051,Found a plan for avocado in 1.95595788956 seconds
1438293902691084147,current predicted item != motion target; calc a new plan
1438293902691110642,current probability is greater than EXECUTION_THRESHOLD
1438293902691885974,have existing requests
1438293904496769068,robot is in motion toward [avocado]
1438293907737142498,ready to pick up the item
理想我所要的輸出是這樣的:
1438293900729698553, strawberry
1438293901681590725, avocado
1438293904496769068, avocado
因此很明顯,我必須使用subset
在grep
的R
,但我不太確定如何!
你有一個向量或其他對象,包含你想讓你的代碼識別的水果的名字? – ulfelder
@ulfelder我沒有矢量,但是,我知道他們只有15個,所以他們是有限的。這將如何幫助? –
如果您要讓代碼在這些字符串中查找某些內容,您需要告訴它該查找什麼。除非水果的名字總是在'往'字後面出現,或者是方括號中唯一出現的字,否則你應該能夠避開這個問題。這些條件中至少有一個是真的嗎? – ulfelder