我正在读取csv文件,并尝试根据两个连续行的bug_id和bug_when相同并且第i行的列列值为“RESOLVED”的条件来更新名为'added'的列的值“然后通过连接”已添加“列(i和i + 1行)的值更新(i + 1)行上添加的列的值并删除第i行。我累了,但它没有正常工作。该文件包含以下信息:更新列值并删除R中的行
bug_id bug_when field added
1141327 2015-03-09 16:21:30 Status RESOLVED
1141327 2015-03-09 16:21:30 Resolution DUPLICATE
1142623 2015-03-24 18:15:22 Status RESOLVED
1142623 2015-03-24 18:15:22 Resolution FIXED
1143179 2015-07-30 09:37:56 Status RESOLVED
1143179 2015-07-30 09:37:56 Resolution FIXED
这里是我的代码:
dataframe <- read.csv("prototype.csv", header = TRUE)
start <- 1
end <- nrow(dataframe)-1
for(i in start:end)
{
if(dataframe$bug_id[i]==dataframe$bug_id[i+1] & dataframe$bug_when[i]==dataframe$bug_when[i+1])
{
if(dataframe$added[i]=="RESOLVED")
{
df <- paste(dataframe$added[i],"-",dataframe$added[i+1])
dataframe$added[i+1] <- df
dataframe <- dataframe[!(dataframe[i,])]
}
}
}
任何建议将高度赞赏。 所需的结果:
bug_id bug_when field added
1141327 2015-03-09 16:21:30 Resolution RESOLVED-DuPLICATE
1142623 2015-03-24 18:15:22 Resolution RESOLVED-FIXED
1143179 2015-07-30 09:37:56 Resolution RESOLVED-FIXED
你可以添加数据例如你想要的结果,你提供的? –
@PLapointe希望添加结果 – user2293224