dataframe
R: as.numeric function not returning correct # from data.frame [duplicate]
This question already has answers here: Closed 11 years ago. Possible Duplicate: R - How to convert a factor to an integer\\numeric in R without a loss of information[详细]
2023-03-25 07:27 分类：问答save data with unequal lengths without introducing NA's
I have a question about saving a dataframe with unequal lengths. Is there way to save table with variable lengths without introducing NA\'s or something? Here is an example with NA\'s but that is not[详细]
2023-03-25 07:21 分类：问答For loop in a for loop?
I have two dataframes: df1<- as.data.frame(matrix(1:15, ncol=5)) df2<- as.data.frame(matrix(30:44,ncol=5))[详细]
2023-03-25 03:00 分类：问答How to subset a data.frame in a list and return data.frame?
When subsetting a data.frame inside of a list, I get vectors instead of a data.frames (see the example below). How to a开发者_开发百科void this and get a data.frames?[详细]
2023-03-25 01:22 分类：问答How to sort a data frame in R
I am new to R, and want to sort a data frame called \"weights\". Here are the details: >str(weights)[详细]
2023-03-24 00:09 分类：问答Filtering a data frame with multiple conditions
I am looking to subset a data frame in R. My syntax is obviously wrong (ie producing the wrong results).[详细]
2023-03-23 01:59 分类：问答replace words in R data.frames (Text Mining)
I\'m working on a Text Mining Solution with SQL and R. First I Import Data into R from my SQL selection and than I do data mining stuff with it.[详细]
2023-03-23 01:24 分类：问答R: Question about table reshaping
I have the following data frame: id,property1,property2,property3 1,1,0,0 2,1,1,0 3,0,0,1 4,1,1,1 d.f <- structure(list(id = 1:4, property1 = c(1L, 1L, 0L, 1L), property2 = c(0L,[详细]
2023-03-22 04:50 分类：问答cbind two data frames with different rownames and numbers of rows
Suppose I have two data frames, each with a different number of rows and columns and sharing some row names but not othe开发者_开发知识库rs. I\'d like to be able to cbind them together so that the res[详细]
2023-03-21 18:28 分类：问答R: summarise data frame with repeating rows into boxplots
I am an R neophyte, with a data frame of database function runtimes with the following data: > head(data2)[详细]
2023-03-20 15:45 分类：问答
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