75 lines
2.0 KiB
Plaintext
75 lines
2.0 KiB
Plaintext
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NEWS/Changelog
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0.1-8 2022-11-29
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o minor change to avoid protect and registration warnings
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0.1-7 2013-12-03
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o fix endianness issue in writePNG() on big-endian machines
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when using nativeRaster
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0.1-6 2013-07-02
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o add support for text tags as well as R object metadata
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which is serialized into the text field
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(Thanks to Duncan Temple Lang for the idea)
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0.1-5 2013-06-03
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o add dpi and asp to writePNG() which allows to store the
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image resolution or aspect ratio (via the sPHYs PNG tag).
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o add info flag to readPNG() which interprets some optional
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tags to return additional information such as dpi, asp
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or gamma if stored.
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o try to detect local libpng via LOCAL_SOFT on Windows.
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Note that if you use LOCAL_SOFT, you are taking full
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responsibility over the libraries that png will be linked
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against.
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0.1-4 2011-12-10
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o writePNG() now supports binary connection as target and the
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default target is now raw()
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0.1-3 2011-09-02
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o remove debugging output
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o added a missing call to png_set_interlace_handling to allow
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libpng to de-interlace images
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o prevent warnings in readPNG() example for the windows device
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which is incapable of any transparency
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0.1-2 2011-01-19
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o support raw array as input to writePNG (RGBA only)
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o do not truncate 16-bit images in readPNG() if the resulting
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output is not nativeRaster
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o Windows binary on RForge has been updated to libpng 1.5.0
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0.1-1 2010-04-06
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o add tolerance to writePNG() to avoid shifts by one in
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color because of numerical representation of discretized
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values
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o adapt to a last-minute change in R 2.11.0 from raster() to
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rasterImage()
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o add support for more efficient nativeRaster format
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0.1-0 2010-03-17
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o first release on CRAN, supports readPNG() and writePNG()
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for files and raw vectors. readPNG() supports any input
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color type but will convert to 1-4 planes with 8-bit
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accuracy each. writePNG() will write out 1-4 planes
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8-bit each. writePNG() has currenty no provision for
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generating or stroring a palette.
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