Top Questions

1. How to find indices of first two elements in a list that are any of the elements in another list?
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   5 answers
2. Creating a new column based on conditions by groups in R
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3. How to sum across rows with all NAs to be 0/NA
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   1 answers
4. Error message of missing values while plotting facet_grid bar plot
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5. Create a new value based on summing specific columns in R
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   3 answers