r - Subset / filter rows in a data frame based on a condition in a ...
Subset / filter rows in a data frame based on a condition in a column Asked 15 years, 4 months ago Modified 3 years, 2 months ago Viewed 363k times
Subset rows in a data frame based on a vector of values
If you want to subset rows and keep all columns you have to use the specification object[index_rows, index_columns], while index_cols can be left blank, which will use all …
r - How to combine multiple conditions to subset a data-frame …
I have a data.frame in R. I want to try two different conditions on two different columns, but I want these conditions to be inclusive. Therefore, I would like to use "OR" to combine the condition...
r - How do I subset a data frame by multiple different categories ...
Jun 8, 2022 · I'm trying to subset a data frame by a number of categories. For example - my dataset looks similar to this What I want to do is subset this data frame so I have only the …
r - Extracting specific columns from a data frame - Stack Overflow
I have an R data frame with 6 columns, and I want to create a new data frame that only has three of the columns. Assuming my data frame is df, and I want to extract columns A, B, and E, this …
r - Subset of rows containing NA (missing) values in a chosen …
This should create a new data frame (new_data) with only the missing values in it. Works best to keep a track of values that you might later drop because they had some columns with missing …
r - Subsetting from a Data Frame - Stack Overflow
Jun 28, 2016 · On the help page for ?subset, you'll see this under the "Warning" section: "This is a convenience function intended for use interactively. For programming it is better to use the …
r - Subset data to contain only columns whose names match a …
Is there a way for me to subset data based on column names starting with a particular string? I have some columns which are like ABC_1 ABC_2 ABC_3 and some like XYZ_1, …
Subset with unique cases, based on multiple columns
Jul 7, 2012 · I'd like to subset a dataframe to include only rows that have unique combinations of three columns. My situation is similar to the one presented in this question, but I'd like to …
r - Using grep to help subset a data frame - Stack Overflow
The help-page for subset shows how you can use grep and grepl with subset if you prefer using this function over [. Here's an example.