Group Data Frame Rows by Range in R (2 Examples) | Aggregate Interval, Year & Date | dplyr Package

R: sum columns/rows in data frames | dplyr || 10

Print First or Last Rows of Data Frame in R (4 Examples) | head() & tail() Functions | Top & Bottom

Subset Data Frame & Matrix by Row Names in R (Example) | Select & Extract | rownames & %in% Operator

Extract First N Rows of Data Frame in R (3 Examples) | Select & Subset with head Function & [ , ]

R Basics: How to Use filter() to Select Rows Based on Column Values

Change Index Numbers of Data Frame Rows (R Example) | Set Order & Reset | rownames & nrow Function

Keep Original Row Order when Merging Data (Example) | Base R vs. dplyr Join | merge() & inner_join()

Top 10 R Packages for Exploratory Data Analysis (EDA)

How To... Add a Row to a Dataframe in R #60

Select Data Frame Rows based on Values in Vector in R | element, filter [dplyr] & setDT [data.table]

Dplyr Essentials (easy data manipulation in R): select, mutate, filter, group_by, summarise, & more

R Order Data Frame Rows According to Vector (Example) | Sort & Rearrange | match & left_join [dplyr]

Numbering Rows within Groups of Data Frame in R (2 Examples) | Base R vs. dplyr | Add Group Counter

Loop Through Data Frame Columns & Rows in R (4 Examples) | for-, while- & repeat-Loops | Add Values

Find Common Rows Between Two Data Frames in R | Identify Duplicates | intersect & inner_join [dplyr]

Calculate Product of Vector & Data Frame in R (Example) | Rows & Columns | Multiply All Elements

Select Odd & Even Rows & Columns from Data Frame in R (4 Examples) | seq_len, nrow & ncol Functions

Convert Values in Column into Row Names of Data Frame in R (Example) | Variable & row.names Function

Create Data Frame with n Rows & m Columns in R (Example) | Specify Dimensions | matrix, nrow & ncol