transcript A character name of the transcript/gene column abundance get_sample_counts Get column names either from user or from attributes Description
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[PDF] Package colr
3 jan 2017 · Description Powerful functions to select and rename columns in A dataframe, list a matrix with column names or a named numeric pattern
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transcript A character name of the transcript/gene column abundance get_sample_counts Get column names either from user or from attributes Description
[PDF] Subsetting Data in R - Andrew E Jaffe
5 jan 2016 · Subset columns of a data frame: We can select multiple columns using multiple column names: df[, c("x", "y")] x y 1 1 -0 2707606
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Often this is handy when trying to create a sequence of names for columns or rows of a matrix or data frame and the number of names (or labels) is so large as to
[PDF] R datatable Cheat Sheet
DT[V2 in c("A","C")] Select all rows that have value A or C in column V2 Manipulating on Aggregate=sum(V1), The same as the above, with new names
[PDF] Dataframes - Lecture 8
A dataframe is a matrix-like structure, where the columns can be of different types to access rows and columns and the $ is used to get entire columns # state x77, is a colnames(data); rownames(data) # Column and row names dim(data)
[PDF] 14 Matrix expressions - Stata
missing values) that is bordered by a row and a column of names the resulting matrices, you will find that they have row and column names that use only
[PDF] Data Transformation with datatable : : CHEAT SHEET - GitHub
Take data table dt, subset rows using i (b, c)] – extract columns by name b c b c a 6 a 2 6 dt[, c := sum(b), by = a] – create a new column and compute rows
[PDF] Base R - Poverty Action Lab
Base R Cheat Sheet RStudio® is a trademark of RStudio, Inc • CC BY Get a summary of an object's structure name 'apple' m[ , 1] - Select a column
[PDF] Package datatable - R
21 fév 2021 · i e , it sees column names as if they are variables This allows to not just select columns in j, but also compute on them e g , x[,a] and x[,sum(
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