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Changelog

Source: NEWS.md

ijtiff 3.3.0

NEW FEATURES

  • read_tif() and read_tags() can read directly from an in-memory raw vector of TIFF bytes; write_tif(img, path = NULL) writes to memory and returns the TIFF file as a raw vector.
  • 12-bit grayscale TIFFs are now readable (values returned in 0..4095, big-endian packing assumed).
  • Signed-integer TIFFs now read with correct negative values (previously warned and read as unsigned).
  • read_tif() gains a convert argument. convert = "force" decodes any image via libtiff’s RGBA reader, converting exotic colorspaces (YCbCr, CMYK/separated, CIELab, …) to 8-bit RGB(A) — useful for images that previously read in a non-RGB colorspace or (for JPEG-YCbCr) not meaningfully at all. convert = "auto" (the default) preserves existing behaviour for every currently-readable image and only uses the RGBA reader as a fallback for images the direct decoder cannot parse at all. convert = "never" disables it.
  • write_tif() can write PHOTOMETRIC_RGB images via tags_to_write = list(photometric = "RGB"); the default remains BlackIsZero. Supported TIFF metadata (including PhotometricInterpretation) now round-trips through read→write automatically.

BEHAVIOUR CHANGES

  • Because photometric now round-trips, an image read from a WhiteIsZero TIFF is re-written as WhiteIsZero (previously BlackIsZero). Unwritable source photometrics (Palette/CMYK/YCbCr/CIELab/…) are silently not written unless you convert the image.

BUG FIXES

  • Fixed a stale check that caused the “Reading … image” message to always say “float” regardless of the true sample format.
  • read_tif()/read_tags() error messages for unsupported images now render their values correctly (previously a va_list misuse garbled the numbers).
  • Fixed a memory-safety bug where reading a corrupt/truncated TIFF that errored mid-decode could leave a dangling handle and crash (segfault) on a subsequent read or at garbage collection. The TIFF handle’s state is now heap-owned and cleaned up by its finalizer, removing a latent double-close/use-after-free.

ijtiff 3.2.0

CRAN release: 2026-01-26

NEW FEATURES

  • write_tif() now uses a tags_to_write parameter that accepts a named list of TIFF tags, consolidating support for all writable tags (previously used individual parameters).
  • Support for writing imagedescription TIFF tag (tag 270) for OME-TIFF metadata.
  • Automatic metadata preservation: TIFF tags are automatically extracted from image attributes (e.g., from read_tif()) and included when writing, enabling round-trip editing without metadata loss.
  • Tag name normalization: tag names in tags_to_write are now case-insensitive and ignore hyphens/underscores.
  • Compression and bits-per-sample overrides: tags_to_write can now override compression and bits_per_sample parameters.

MINOR IMPROVEMENTS

  • Replace vapply() with purrr::map_chr() in tag normalization for cleaner, more consistent code style.
  • Refactored argument checking logic for better organization.

TESTS

  • Add comprehensive test suite for automatic metadata pass-through and attribute tag handling (39 new tests).
  • Add tests for compression override via tags_to_write (11 tests).
  • Add tests for bits_per_sample override via tags_to_write (9 tests).

ijtiff 3.1.3

CRAN release: 2025-04-05

MINOR IMPROVEMENTS

  • Fix PROTECTion error.

ijtiff 3.1.2

BUG FIXES

Doc fix for write_tif(). See issue #23.

ijtiff 3.1.1

CRAN release: 2025-03-21

BUG FIXES

  • Fix a PROTECTion error in tags.c.

ijtiff 3.1.0

CRAN release: 2025-03-10

MINOR IMPROVEMENTS

  • display() now uses base R’s graphics and grDevices so the dependency on the (large) imager package is removed.

BUG FIXES

  • Fixed memory leaks in tag handling code by ensuring proper buffer cleanup.
  • Added TIFF file validation to prevent memory leaks when handling invalid files.
  • Improved error messages for invalid TIFF files.
  • All tags now included in print() method.

ijtiff 3.0.0

CRAN release: 2025-03-02

NEW FEATURES

ijtiff 2.3.5

CRAN release: 2025-01-29

BUG FIXES

  • Use basic image display in vignettes. EBImage was causing integer overflow.

ijtiff 2.3.4

CRAN release: 2023-12-13

BUG FIXES

  • Include more (necessary) stuff in SystemRequirements.

ijtiff 2.3.3

CRAN release: 2023-10-08

BUG FIXES

  • Ignore pkg-config when it says to use -ljbig or -lLerc.

ijtiff 2.3.2

CRAN release: 2023-07-16

MINOR IMPROVEMENTS

  • Add libwebp and libzstd to README installation instructions.

ijtiff 2.3.1

CRAN release: 2023-05-06

BUG FIXES

  • Fix test for new waldo.

ijtiff 2.3.0

CRAN release: 2023-01-17

MINOR IMPROVEMENTS

  • Use rlang::abort() and its error message formatting.
  • Move away from magrittr’s %<>%.

ijtiff 2.2.8

CRAN release: 2022-08-31

BUG FIXES

  • Fix headings in NEWS.md.

ijtiff 2.2.7

CRAN release: 2021-06-28

BUG FIXES

  • Fix for new libtiff using C99’s <stdint.h>.

ijtiff 2.2.6

CRAN release: 2021-04-20

BUG FIXES

  • Suppress unhelpful warnings during configure when pkg-config doesn’t find info for libtiff.
  • Remove LazyData from DESCRIPTION (was causing CRAN note).

ijtiff 2.2.5

CRAN release: 2021-01-14

BUG FIXES

  • Typo fix for configure. At one point there was a call of pkg-configs instead of pkg-config.
  • Also now all compile flags from pkg-config --libs and pkg-config --libs --static are used every time.

ijtiff 2.2.4

CRAN release: 2020-11-09

BUG FIXES

  • Fix for configure error messages.

ijtiff 2.2.3

CRAN release: 2020-11-01

BUG FIXES

  • Make configure more portable by using sh instead of bash.

ijtiff 2.2.2

CRAN release: 2020-10-18

BUG FIXES

  • Insist on bug-fixed strex >= 1.4.

ijtiff 2.2.1

CRAN release: 2020-10-10

BUG FIXES

  • Insist on strex >= 1.3.1 to avoid a garbage collection issue.

ijtiff 2.2.0

CRAN release: 2020-08-05

NEW FEATURES

  • The package now works on 32-bit Windows (thanks to PR #12 from Jeroen Ooms).

BUG FIXES

ijtiff 2.1.2

CRAN release: 2020-07-24

BUG FIXES

  • Fix some typos in the vignettes.

ijtiff 2.1.1

CRAN release: 2020-07-04

BUG FIXES

  • Fix a PROTECTion error.

ijtiff 2.1.0

CRAN release: 2020-07-02

NEW FEATURES

  • Add support for images with colormaps (also known as lookup tables (LUTs)).
  • Add a print method for ijtiff_imgs.

ijtiff 2.0.5

CRAN release: 2020-04-06

BUG FIXES

  • Fix a test that failed due to breaking changes in tibble.

ijtiff 2.0.4

CRAN release: 2019-10-25

MINOR IMPROVEMENTS

  • Include rOpenSci docs in DESCRIPTION as URL.

BUG FIXES

  • Sometimes pkg-config declares that ijtiff needs JBIG_KIT (compile flag -ljbig) at compile time. This is incorrect and it often causes users installation pain. This fix is a hack that removes this compile flag from the pkg-config output.

ijtiff 2.0.3

CRAN release: 2019-08-24

BUG FIXES

  • libjpeg needs to be in SystemRequirements.

ijtiff 2.0.2

CRAN release: 2019-07-06

BUG FIXES

  • For ImageJ-written images, if n_slices and n_frames are both specified, that should be OK if they’re equal.

ijtiff 2.0.1

CRAN release: 2019-06-28

BUG FIXES

  • Insist on latest, bug-fixed filesstrings 3.1.5.

ijtiff 2.0.0

CRAN release: 2019-06-10

BREAKING CHANGES

NEW FEATURES

BUG FIXES

  • Include sys/types.h for greater type compatibility.

ijtiff 1.5.1

CRAN release: 2019-05-16

BUG FIXES

  • Require necessary version of glue.
  • Fix dimension-related bug in as_EBImage().
  • Require latest (less-buggy) filesstrings.

ijtiff 1.5.0

CRAN release: 2018-10-31

NEW FEATURES

  • Allow ZIP compression (which seems to be the best).

BUG FIXES

  • write_txt_img() was using decimal points for integers (e.g. 3.000 instead of just 3).

ijtiff 1.4.2

CRAN release: 2018-10-07

BUG FIXES

  • Hacky fix for configure script to deal with lack of -ljbig on Solaris.
  • Trim the package to below 5MB by compressing a few TIFF files.

ijtiff 1.4.1

CRAN release: 2018-09-24

NEW FEATURES

  • The package is now lighter in appearance because it doesn’t explicitly depend on tibble.

BUG FIXES

  • The configure script now allows for needing --static with pkg-config.

ijtiff 1.4.0

CRAN release: 2018-09-10

NEW FEATURES

  • A pkgdown website.

MINOR IMPROVEMENTS

  • Better vignettes.
  • Better error messages.

ijtiff 1.3.0

NEW FEATURES

ijtiff 1.2.0

MINOR IMPROVEMENTS

  • Improved the description of the package in DESCRIPTION, vignette and README.
  • Added a hex sticker.
  • Limited support for tiled images thanks to new author Kent Johnson.
  • write_tif() is now slightly (<10%) faster.
  • write_tif() messages are now more informative.

ijtiff 1.1.0

CRAN release: 2018-04-19

NEW FEATURES

  • count_imgs() counts the number of images in a TIFF file without reading the images themselves.
  • read_tags() reads the tags from TIFF images without reading the images themselves.

MINOR IMPROVEMENTS

  • Now includes citation information.
  • C code is more readable.
  • display() is more flexible, accepting 3 and 4-dimensional arrays, just displaying the first frame from the first channel.

ijtiff 1.0.0

PEER REVIEW

  • The package is now peer reviewed by ROpenSci.

ijtiff 0.3.0

MINOR IMPROVEMENTS

  • Improve README and vignette with more tangible and fun example.

BUG FIXES

  • Fix windows libtiff issues (thanks to Jeroen Ooms).
  • Found some ImageJ-written TIFFs that weren’t being read correctly and fixed that.
  • Fix protection stack overflow error for TIFFs with many images.

ijtiff 0.2.0

  • First CRAN release.

MINOR IMPROVEMENTS

  • Include handy shortcuts for 2- and 3-dimensional arrays.
  • Messasges to inform the user about what kind of image is being read/written.

ijtiff 0.1.0

  • First github release.