GuedesBF

GuedesBF has asked 1 questions and find answers to 31 problems.

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An M.D. taking first steps into data science

GuedesBF questions

pivot_wider/spread only a subset of levels from a column

GuedesBF answers

using regex and grepl to detect words starting with a specific pattern
Remove % of Items in Columns
Which and rowsums to select particular rows, however considering NAs
How do you convert all numeric strings in a dataframe to numeric in R?
Find the value of a column over a set of columns in a data frame in R
Which is the fastest manner to the derive the conditional minimum value of an R data frame column?
How to separate and extract numerical values from 1 column in a dataframe?
In R, how create new dataframe with number of occurrences of each strings on other dataframe, like a product list and products in basket sold
Group by and run multiple t tests in R
Check if a dataframe column contains decimal values