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Create a new column if values match between two column?

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summaryBy and lots of variables

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do.call with options in r to arrange ggplot list

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Delete duplicates within groups?

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Find and selecting duplicates rows and comparing their dates

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Combination Matrix while keeping original matrices

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Efficient accumulated concatenation by group in data frame

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How to convert charater to HH:MM:SS, even if we have more than 24h?

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How to Classify data frame Based on a Columns in R?

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Delete rows with equal and consecutive values

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Arrange a column from a data.frame in ascending or descending order...

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Columns names goes away when using lapply

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How to repetitively divide each column in dataframe A by median of...

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counting days since price change for product

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Is there an R function to extract data from a matrix with associate...

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Conditionally replace value based on multiple other variables

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warning : Some strings failed to parse, or all strings are NAs

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Regex Expression for Multiple Groups

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How to use col_types using readr's read_delim_chunked?

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Remove rows with NAs for matrices in a list

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Expanding from one row to multiple using a date range

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Reshaping Data in R with Reshape

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How to multiply by a constant and then sum across rows

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Convert multiple strings into object references

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read.csv importing two columns instead of one

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Grepl like match to extract specific/exact string in R

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Data.table: Apply function over groups with reference to set value...

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Correlation between variables under the for loop

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How to remove some row in each group and keep first of them?

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Split string with repeated delimiters

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R Drop rows where all columns beginning with a string have NAs

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why am I getting could not find function "%>%" in gapm...

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finding values in a range in r and sum the number of values

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Loop filtering through columns so as to return a list with all colu...

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dplyr rename() function not working. I get "object X not found...

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Is there a generalizable way to pass variable names into functions...

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How can I calculate the frequencies of certain strings in rows of a...

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Multiply each row with whole data table efficiently for large data...

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Create a column with concatenated possible values of one column bas...

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How to get pmax over multiple variables with dplyr?

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How do I remove suffix from a list of Ensembl IDs in R

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How can I remove elements by columns number from a list?

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How to make a new df from subset of values from another df?

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How to sum rows and keep their name in a dataframe

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groupby a dataframe column and merge rows into columns

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Use str_detect to find the ID of the novel Pride and Prejudice

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put left padded zeros inside string

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how to obtain unique key for those with non unique value's in R

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How to convert data type according to a given list

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How to replace a caret with str_replace from stringr

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