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Ieee Conference 2025 - The winning answer int he duplicate question is not as good as the answer here The other should be marked as a duplicate of this since this is a MUCH better answer Nov 9 2014 nbsp 0183 32 I have been using spreadsheets quite a lot for data pre processing but since I discovered dplyr that seems to have changed However when one applies filters in a Jan 3 2014 nbsp 0183 32 df2 lt replace df df quot e quot NA df2 lt droplevels df2 The problem is when I use droplevels it drops level b from var3 also I don t want to remove level b just level e from all of
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Ieee Conference 2025
Ieee Conference 2025 Indonesia 2025 Dean A Ashworth
Ieee Conference 2025 Indonesia 2025 Dean A Ashworth
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Ieee Conference 2025 Computer Science Savannah J Samuel
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Aug 18 2010 nbsp 0183 32 I have a data frame with 251 observations and 45 variables There are 6 observations in the middle of the data frame that i d like to exclude from my analyses All 6
Both drop levels and droplevels are intended for dropping unused levels from a data set The subset command above is more likely to do what you want I m using droplevels from base
Ieee Conference 2025 Computer Science Jackson B Louise
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Apr 13 2017 nbsp 0183 32 What is the most effective ie efficient appropriate way to clean up a factor containing multiple levels that need to be collapsed That is how to combine two or more
Aug 16 2021 nbsp 0183 32 I m looking to drop multiple levels of a variable based on values in a list My actual variable has 300 levels but the below code creates a smaller sample data frame with a similar