Kridsadakorn Chaichoompu


R Package KRIS


The R package KRIS (Keen and Reliable Interface Subroutines for bioinformatic analysis) is the package providing useful functions which are needed for bioinformatic analysis such as calculating linear principal components from numeric data and Single-nucleotide polymorphism (SNP) dataset, calculating fixation index (Fst) using Hudson method, creating scatter plots in 3 views, handling with PLINK binary file format, detecting rough structures and outliers using unsupervised clustering, and calculating matrix multiplication in the faster way for big data.

The R package KRIS requires the package rARPACK.

Here is the list of functions in the R package KRIS:

Moreover, here is the list of example datasets in the R package KRIS:


Install the released version of KRIS from CRAN:


For developemenpers: problem sovling in checking the package as CRAN

Error of Roxygen2 in building RD files

The source codes in this package include the Roxgen’s syntax. If there is a problem for generating the RD files (facing some errors) using RStudio (Build > Document), try to use roxygen2::roxygenise() instead of Build > Document from the menu. Alternatively, install the package devtools, then enable RStudio to use the functions from devtools (check Build > Configure Build Tools… > use devtools package functions if available) or run devtools::document() in the console.

Error of testthat for unit testing

When facing error for testthat, try to update the package testthat and add Suggests: testthat in DESCRIPTION file.

Submit package to CRAN

Check the submission using R CMD check --as-cran and a current version of r-devel, as mandated by the CRAN Repository Policy. (You could do so using the win-builder service at

Resubmit new version to CRAN

Check downstream dependencies with devtools::revdep_check()

Error on checking DESCRIPTION meta-information in Linux

Edit ~/.profile, ~/.bash_profile or ~/.bashrc, then add

export LANG=en_US.UTF-8

export LC_ALL=en_US.UTF-8


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