Recent questions tagged plyr

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plyr - R resetting a cumsum to zero at the start of each year

I have a dataframe with a bunch of donations data. I take the data and arrange it in time order from ... .numeric(as.character(giftamt)))) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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plyr - R ddply with multiple variables

Here is a simple data frame for my real data set: df <- data.frame(ID=rep(101:102,each=9),phase=rep(1:3,6),variable= ... 1 -1 -1 102 3 C 0 0 0 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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252 views

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plyr - How to expand a large dataframe in R

I have a dataframe df <- data.frame( id = c(1, 1, 1, 2, 2, 3, 3, 3, 3, 4), date = c(" ... the other variables in my real dataframe) based on id? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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plyr - ddply for sum by group in R

I have a sample dataframe "data" as follows: X Y Month Year income 2281205 228120 3 2011 1000 2281212 228121 ... task (using the plyr package). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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