dataframe
List of (nearly) equal columns from a data.frame by condition in R
First without the details I have data.frames like that one: val1 val2 val3 val4 val5 11.121.12.14.2 25.755.64.99.9[详细]
2023-03-28 17:49 分类:问答How do you remove columns from a data.frame?
Not so much \'How do you...?\' but more \'How do YOU...?\' If you have a file someone gives you with 200 columns, and you want to reduce it to the few ones you need for analysis, how do you go about[详细]
2023-03-28 12:41 分类:问答Remove rows in dataframe with factor ""
I have a dataframe like x where the column genes is a factor. I want to remove all the rows where column genes has nothing. So in table X I want to remove row 4. Is there a way to do this for a large[详细]
2023-03-28 11:01 分类:问答Split column at delimiter in data frame [duplicate]
This question already has answers here: 开发者_运维百科Split data frame string column into multiple columns[详细]
2023-03-28 10:49 分类:问答Calculate statistics (e.g. average) across cells of identical data-frames
I am having a list of identically sorted dataframes. More specific these are the imputed dataframes which I get after doing Multiple imputations with the AmeliaII package. Now I want to create a new d[详细]
2023-03-28 03:34 分类:问答Reading a "flipped" table in to a data.frame correctly
I have a tab-delimited file that looks like this: AG-AGAG-CAAT-AAAT-ACAT-AG... 0.0142180094786 0.0094786729857810.0142180094786 0.4218009478672 ...[详细]
2023-03-27 21:24 分类:问答Help on subsetting a dataframe
I am using %in% for subsetting and I came across a strange result. > my.data[my.data$V3 %in% seq(200,210,.01),][详细]
2023-03-27 07:53 分类:问答Find duplicated rows (based on 2 columns) in Data Frame in R
I have a data frame in R which looks like: RIC| Dat开发者_运维知识库e| Open| |--------|---------------------|--------|[详细]
2023-03-27 01:40 分类:问答Combining tab delim files into a single file using R
I have several txt files with 3 columns in each files like this: file 1: ProbeID X_Signal_intensity X_P-Value[详细]
2023-03-26 09:25 分类:问答How can I do SQL like operations on a R data frame?
For example, I have a data frame with data across categories and subcategories and I want to be able to get row with maximum value in a particular column etc.[详细]
2023-03-25 14:12 分类:问答