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data.table Package in R | Tutorial & Programming Examples

The data.table R package provides tools for data manipulation and the fast aggregation of large data sets.

Here you can find the documentation of the data.table package.
Here you can find the CRAN page of the data.table package.

Tutorials on the data.table Package

You can find tutorials and examples for the data.table package below.

Add Multiple New Columns to data.table in R (Example)

Add Multiple New Columns to data.table in R (Example)

Aggregate data.table by Group in R (2 Examples)

Aggregate data.table by Group in R (2 Examples)

Append data.table to Another in R (Example) | Concatenate Two Tables

Append data.table to Another in R (Example) | Concatenate Two Tables

Apply Function to data.table in Each Specified Column in R (Example)

Apply Function to data.table in Each Specified Column in R (Example)

Assign Unique ID for Each Group in R (3 Examples)

Assign Unique ID for Each Group in R (3 Examples)

Calculate Cumulative Sum by Group in R (4 Examples)

Calculate Cumulative Sum by Group in R (4 Examples)

Calculate Group Mean & Add as New Column to Data Frame in R (3 Examples)

Calculate Group Mean & Add as New Column to Data Frame in R (3 Examples)

Convert data.frame to data.table in R (Example)

Convert data.frame to data.table in R (Example)

Convert Row Names into Column of Data Frame in R (Example)

Convert Row Names into Column of Data Frame in R (Example)

Count Observations by Factor Level in R (3 Examples)

Count Observations by Factor Level in R (3 Examples)

Count Unique Values by Group in R (3 Examples)

Count Unique Values by Group in R (3 Examples)

Create data.table in R (3 Examples)

Create data.table in R (3 Examples)

Extract data.table Column as Vector Using Index Position in R (Example)

Extract data.table Column as Vector Using Index Position in R (Example)

Group data.table by Multiple Columns in R (Example)

Group data.table by Multiple Columns in R (Example)

Merge Two data.table Objects in R (Example)

Merge Two data.table Objects in R (Example)

Only Import Selected Columns of Data in R (2 Examples)

Only Import Selected Columns of Data in R (2 Examples)

Prevent ifelse Function from Turning Dates into Numeric Class in R (2 Examples)

Prevent ifelse Function from Turning Dates into Numeric Class in R (2 Examples)

R Error: Package or Namespace Load Failed for ggplot2 & data.table

R Error: Package or Namespace Load Failed for ggplot2 & data.table

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Other Useful R Packages

In the following, you can find a list of other useful R packages.

Add Significance Level & Stars to Plot in R (Example) | ggsignif Package

Add Significance Level & Stars to Plot in R (Example) | ggsignif Package

Change Theme Color in ggplot2 Plot in R (Example) | Introduction to ggthemr Package

Change Theme Color in ggplot2 Plot in R (Example) | Introduction to ggthemr Package

data.table Package in R | Tutorial & Programming Examples

data.table Package in R | Tutorial & Programming Examples

DescTools Package in R | Tutorial & Programming Examples

DescTools Package in R | Tutorial & Programming Examples

dplyr Package in R | Tutorial & Programming Examples

dplyr Package in R | Tutorial & Programming Examples

Draw ggplot2 Barplot with Round Corners in R (2 Examples) | ggchicklet Package

Draw ggplot2 Barplot with Round Corners in R (2 Examples) | ggchicklet Package

Draw Heatmap with Clusters Using pheatmap R Package (4 Examples)

Draw Heatmap with Clusters Using pheatmap R Package (4 Examples)

GGally Package in R | Tutorial & Programming Examples

GGally Package in R | Tutorial & Programming Examples

ggthemes Package in R (Example)

ggthemes Package in R (Example)

Introduction to ggpattern Package in R (6 Examples) | ggplot2 Plots with Textures

Introduction to ggpattern Package in R (6 Examples) | ggplot2 Plots with Textures

Introduction to ggvenn Package in R (4 Examples)

Introduction to ggvenn Package in R (4 Examples)

Introduction to the pacman Package in R (3 Examples)

Introduction to the pacman Package in R (3 Examples)

Introduction to the patchwork Package in R (Example Code)

Introduction to the patchwork Package in R (Example Code)

Introduction to the plotly Package in R

Introduction to the plotly Package in R

Introduction to the random Package in R (3 Examples)

Introduction to the random Package in R (3 Examples)

Introduction to the Rcpp Package in R (Examples)

Introduction to the Rcpp Package in R (Examples)

matrixStats Package in R | Tutorial & Programming Examples

matrixStats Package in R | Tutorial & Programming Examples

Modes & the Origins of the stackoverflow R Package

Modes & the Origins of the stackoverflow R Package

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2 Comments. Leave new

IO Whyte
May 7, 2022 6:57 pm

hi i look at all your video related to month and i still couldn’t find the answer i was looking for. So, i was wondering if you can make a video that DOES NOT DEAL WITH DATE and show how one can graph the months in Calander order. ex X <- c(feb, jan, feb, jul, feb, dec, feb, may,feb). how do i graph X so that does month shows "jan, feb, may, jul, and dec" and NOT "dec, feb, jan, jul, and may"

thank you

Reply
- Joachim
  May 9, 2022 6:14 am
  
  Hey,
  
  You may order your plot manually as shown in this tutorial.
  
  I hope that helps!
  
  Joachim
  
  Reply

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