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Rdrw  

Univariate and Multivariate Damped Random Walk Processes
View on CRAN: Click here


Download and install Rdrw package within the R console
Install from CRAN:
install.packages("Rdrw")

Install from Github:
library("remotes")
install_github("cran/Rdrw")

Install by package version:
library("remotes")
install_version("Rdrw", "1.0.2")



Attach the package and use:
library("Rdrw")
Maintained by
Hyungsuk Tak
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2020-05-08
Latest Update: 2020-09-08
Description:
We provide a toolbox to fit and simulate a univariate or multivariate damped random walk process that is also known as an Ornstein-Uhlenbeck process or a continuous-time autoregressive model of the first order, i.e., CAR(1) or CARMA(1, 0). This process is suitable for analyzing univariate or multivariate time series data with irregularly-spaced observation times and heteroscedastic measurement errors. When it comes to the multivariate case, the number of data points (measurements/observations) available at each observation time does not need to be the same, and the length of each time series can vary. The number of time series data sets that can be modeled simultaneously is limited to ten in this version of the package. We use Kalman-filtering to evaluate the resulting likelihood function, which leads to a scalable and efficient computation in finding maximum likelihood estimates of the model parameters or in drawing their posterior samples. Please pay attention to loading the data if this package is used for astronomical data analyses; see the details in the manual. Also see Hu and Tak (2020) .
How to cite:
Hyungsuk Tak (2020). Rdrw: Univariate and Multivariate Damped Random Walk Processes. R package version 1.0.2, https://cran.r-project.org/web/packages/Rdrw. Accessed 04 Jun. 2026.
Previous versions and publish date:
1.0.0 (2020-05-08 20:00), 1.0.1 (2020-05-19 13:50)
Other packages that cited Rdrw R package
View Rdrw citation profile
Other R packages that Rdrw depends, imports, suggests or enhances
Complete documentation for Rdrw
Functions, R codes and Examples using the Rdrw R package
Some associated functions: Rdrw-internal . Rdrw-package . drw . drw.sim . 
Some associated R codes: drw.R .  Full Rdrw package functions and examples
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