How to apply a filter on dataframe in R?

How to apply a filter on dataframe in R?

How to apply a filter on dataframe in R?

This recipe helps you apply a filter on dataframe in R


Recipe Objective

How to apply a filter on dataframe in R ? A filter () function is used to filter out specified elements from a dataframe that return TRUE value for the given condition (s). filter () helps to reduce a huge dataset into small chunks of datasets. **Syntax — filter (data,condition)** This recipe illustrates an example of filters in R..

Step 1 - Import necessary library

install.packages("dplyr") # Install package library(dplyr) # load the package

Step 2 - Create a dataframe

df <- data.frame(student_name = c('U','V','X','Y','Z'), grade = c('AA','CC','DD','AB','BB'), math_marks = c(40,80,38,97,65), eng_marks = c(95,78,36,41,25), sci_marks = c(56,25,36,87,15)) print(df)
 Dataframe is ": 
  student_name grade math_marks eng_marks sci_marks
1            U    AA         40        95        56
2            V    CC         80        78        25
3            X    DD         38        36        36
4            Y    AB         97        41        87
5            Z    BB         65        25        15

Step 3 - Apply filter()

Filter rows on basis of column grade ='AB'

print(filter(df,grade =='AB'))
 Output is ": 
  student_name grade math_marks eng_marks sci_marks
1            Y    AB         97        41        87

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