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itp  

The Interpolate, Truncate, Project (ITP) Root-Finding Algorithm
View on CRAN: Click here


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

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

Install by package version:
library("remotes")
install_version("itp", "1.2.2")



Attach the package and use:
library("itp")
Maintained by
Paul J. Northrop
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2022-06-07
Latest Update: 2023-12-02
Description:
Implements the Interpolate, Truncate, Project (ITP) root-finding algorithm developed by Oliveira and Takahashi (2021) . The user provides the function, from the real numbers to the real numbers, and an interval with the property that the values of the function at its endpoints have different signs. If the function is continuous over this interval then the ITP method estimates the value at which the function is equal to zero. If the function is discontinuous then a point of discontinuity at which the function changes sign may be found. The function can be supplied using either an R function or an external pointer to a C++ function. Tuning parameters of the ITP algorithm can be set by the user. Default values are set based on arguments in Oliveira and Takahashi (2021).
How to cite:
Paul J. Northrop (2022). itp: The Interpolate, Truncate, Project (ITP) Root-Finding Algorithm. R package version 1.2.2, https://cran.r-project.org/web/packages/itp. Accessed 25 Jun. 2026.
Previous versions and publish date:
1.0.0 (2022-06-07 10:30), 1.0.1 (2022-06-14 21:20), 1.1.0 (2022-07-02 08:50), 1.2.0 (2022-07-16 13:30), 1.2.1 (2023-12-02 16:00)
Other packages that cited itp R package
View itp citation profile
Other R packages that itp depends, imports, suggests or enhances
Complete documentation for itp
Functions, R codes and Examples using the itp R package
Some associated functions: itp-internal . itp-package . itp . itp_c . plot.itp . print.itp . xptr_create . xptr_eval . 
Some associated R codes: RcppExports.R . itp-internal.R . itp-package.R . itp.R . itpPlot.R . itpPrint.R .  Full itp package functions and examples
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