ijtiff

Introduction

This is a general purpose TIFF I/O utility for R. The tiff package already exists for this purpose but ijtiff adds some functionality and overcomes some bugs therein.

• ijtiff can write TIFF files whose pixel values are real (floating-point) numbers; tiff cannot.
• ijtiff can read and write text images; tiff cannot.
• tiff struggles to interpret channel information and gives cryptic errors when reading TIFF files written by the ImageJ software; ijtiff works smoothly with these images.

To learn about ijtiff and how to use it, visit the package website at https://docs.ropensci.org/ijtiff/.

Installation

libtiff

ijtiff requires you to have the libtiff C library installed. To install libtiff:

• On Debian Linux, try sudo apt-get install libtiff-dev libbz2-dev libdeflate-dev liblzma-dev libwebp-dev libzstd-dev zlib1g-dev.
• On Fedora Linux, try sudo yum install libtiff-devel libbz2-devel libdeflate-devel liblzma-devel libwebp-devel libzstd-devel zlib-devel.
• On Mac, you need Homebrew. Then in the terminal, run brew install libtiff.
• On Windows, no setup is required.

Installing the release version of the ijtiff R package

You can install ijtiff from CRAN (recommended) with:

install.packages("ijtiff")

Installing the development version of the ijtiff R package

You can install the development version from GitHub with:

devtools::install_github("ropensci/ijtiff")

Acknowledgement

This package uses a lot of code from the original tiff package by Simon Urbanek.

Contribution

Contributions to this package are welcome. The preferred method of contribution is through a github pull request. Feel free to contact me by creating an issue. Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.