I'm trying to identify mismatched values based on one element value before or after the focal value in a vector. Any thought about how to do it?
My data looks similar to this:I would like to add a new column rank_match that finds the nth (taken from the rank column) largest value in the row from columns named 1 to 6. For instance, the first line would look for the 3rd largest value in the row from...
I am looking for a function which takes a vector and keeps dropping the first value until the sum of the vector is less than 20. Return the remaining values.
I have a string column with commas. I want to convert this single column into multiple labeled columns, with values filled in appropriately. The output data frame would have 3 columns (A, B, and C). Row 1 would have columns A and B filled in with "Yes", and C with...
For a custom ggplot2 theme I'd like to change the default aesthetic of some geom, say I want red dots instead of black dots.
I have data which have the format of YYYYMM and I wish convert it to YYYY-MM format.exemple : 201805 should be in the format of 2018-05
I have a data frame like this: which looks like this:I would like to shift values in columns up if there are missing values above (by group). The result should look like this:
I've got a following list:So we can say that 3 belongs to group 1, 6 belongs to group 2, 7 belongs to group 3 and so on. I need a reverse mapping, i.e. to every number I want to have a group id that it belongs to (see expected output):
I already made a similar question but now I want just to restrict the new values of NA. I have some data like this:
I use this hash function a lot, i.e. to record the value of a dataframe. Wanted to see if I could break it. Why aren't these hash values identical?