In this tutorial, we will learn how to join dataframes by columns with different names in the two dataframes. dplyr offers a great set of tools to join or merge dataframes. We will use two approaches to merge two dataframe by different names. We will start with … [Read more...] about Join dataframes by different column names with dplyr
rstats101
slice_max: get rows with highest values of a column
In this tutorial, we will learn how to get rows with maximum values of a column or variable from a dataframe. For example, from a dataframe with multiple rows and columns we will find a row (or multiple rows) with maximum values for a column. We will use dplyr's slice_max() … [Read more...] about slice_max: get rows with highest values of a column
How to Calculate Rolling Mean in R
In this tutorial, we will learn how to compute rolling mean of a column in a dataframe in R. Rolling mean often useful in time series data analysis is also known as moving average or running average calculates average of data points over window of specified size. In R, we can … [Read more...] about How to Calculate Rolling Mean in R
Logistic Regression with Single Predictor in R
In this post, we will learn how to perform a simple logistic regression using Generalized Linear Models (glm) in R. We will work with logistic regression model between a binary categorical variable as response variable and a single numerical predictor. Data for logistic … [Read more...] about Logistic Regression with Single Predictor in R
Simple Barpots and reordering bars in R
In this post, we will learn how to make simple barplot using ggplot2 and learn to reorder barplots in R. We will make a barplot using ggplot2's geom_col() with multiple bars. By default, ggplot2 orders the bars in alphabetical order. We will see examples of reordering barplots by … [Read more...] about Simple Barpots and reordering bars in R