How can a seven-day bandwidth local linear regression be plotted over time using ggplot2?

add a comment

2

Here is an example code to plot a seven-day bandwidth local linear regression using ggplot2:

`# Load necessary libraries library(ggplot2) library(dplyr) library(zoo) # Create some dummy data set.seed(123) data <- data.frame(date = seq(as.Date("2021-01-01"), as.Date("2021-01-31"), by = "day"), value = rnorm(31)) # Define the bandwidth for local linear regression bw <- 7 # Calculate the local linear regression using the zooreg function from the zoo package data_llr <- data %>% select(date, value) %>% mutate(date = as.Date(date)) %>% mutate(value_llr = zoo::rollapplyr(value, bw, function(x) lm(value ~ as.numeric(date), data = data.frame(date = x))$fitted)) # Plot the data and the local linear regression using ggplot2 ggplot(data_llr, aes(x = date)) + geom_line(aes(y = value), color = "blue") + geom_line(aes(y = value_llr), color = "red") + ggtitle("Seven-day bandwidth local linear regression") + xlab("Date") + ylab("Value") `

This code assumes that the data is in a `data.frame`

with columns `date`

and `value`

. The `bw`

variable defines the bandwidth for the local linear regression. The `zoo::rollapplyr`

function is used to apply the local linear regression over a rolling window of width `bw`

. The resulting data frame `data_llr`

contains the original data and the calculated local linear regression values. The `ggplot2`

functions are used to plot the original data in blue and the local linear regression in red. The resulting plot shows how the local linear regression changes over time, highlighting trends and patterns in the data.

Please start posting anonymously - your entry will be published after you log in or create a new account. This space is reserved only for answers. If you would like to engage in a discussion, please instead post a comment under the question or an answer that you would like to discuss

Asked: ** 2023-01-27 11:00:00 +0000 **

Seen: **6 times**

Last updated: **Jul 23 '22**

How can I deal with Expression.Error related to a column in Power Query?

How can you implement pagination in Oracle for the LISTAGG() function?

What is the process for implementing a FutureBuilder on an OnTap function in Flutter?

How can we require users to be logged in before they can access the root folders in WordPress?

In SCSS, what is the method for grouping and reusing a set of classes and styles?

How can popen() be used to direct streaming data to TAR?

How does iOS retrieve information from a BLE device?

How can Django Admin accommodate a variety of formats and locales for its input fields?

Copyright QStack.ai, 2010-2023. Content on this site is licensed under the Creative Commons Attribution Share Alike 3.0 license.