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