str_extract all using mutate and toString

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To extract all occurrences of a specific pattern using the str_extract_all function in the R programming language, you can follow these steps:

1. Start by loading the required libraries. You will need the stringr library for this task. Use the library(stringr) command to load it.

2. Next, create a data frame or a tibble containing the data you want to extract patterns from. Let's assume your data is stored in a variable called data.

3. Use the mutate function from the dplyr package to add a new column to your data frame. You can name this column whatever you prefer. Let's call it extracted_patterns.

4. Inside the mutate function, use the str_extract_all function from the stringr package to extract all occurrences of a specific pattern. The first argument of str_extract_all is the column containing the text you want to extract from, and the second argument is the pattern you want to extract. For example, if you want to extract all occurrences of the word "apple", you would use str_extract_all(data$column_name, "apple").

5. Finally, use the toString function to convert the extracted patterns into a comma-separated string. This will collapse all the extracted patterns for each row into a single string. You can apply the toString function to the extracted_patterns column using the mutate function. For example, you can write mutate(extracted_patterns = toString(extracted_patterns)).

That's it! Following these steps will allow you to use the str_extract_all function with mutate and toString to extract all occurrences of a specific pattern from your data and convert them into a comma-separated string. Let me know if you have any further questions.