1NEWS/Changelog
2
30.1-7	2013-12-03
4    o	fix endianness issue in writePNG() on big-endian machines
5	when using nativeRaster
6
70.1-6	2013-07-02
8    o	add support for text tags as well as R object metadata
9	which is serialized into the text field
10	(Thanks to Duncan Temple Lang for the idea)
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12
130.1-5	2013-06-03
14    o	add dpi and asp to writePNG() which allows to store the
15	image resolution or aspect ratio (via the sPHYs PNG tag).
16
17    o	add info flag to readPNG() which interprets some optional
18	tags to return additional information such as dpi, asp
19	or gamma if stored.
20
21    o	try to detect local libpng via LOCAL_SOFT on Windows.
22	Note that if you use LOCAL_SOFT, you are taking full
23	responsibility over the libraries that png will be linked
24	against.
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26
270.1-4	2011-12-10
28    o	writePNG() now supports binary connection as target and the
29	default target is now raw()
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320.1-3	2011-09-02
33    o	remove debugging output
34
35    o	added a missing call to png_set_interlace_handling to allow
36	libpng to de-interlace images
37
38    o	prevent warnings in readPNG() example for the windows device
39	which is incapable of any transparency
40
41
420.1-2	2011-01-19
43    o	support raw array as input to writePNG (RGBA only)
44
45    o	do not truncate 16-bit images in readPNG() if the resulting
46	output is not nativeRaster
47
48    o	Windows binary on RForge has been updated to libpng 1.5.0
49
50
510.1-1	2010-04-06
52    o	add tolerance to writePNG() to avoid shifts by one in
53	color because of numerical representation of discretized
54	values
55
56    o	adapt to a last-minute change in R 2.11.0 from raster() to
57	rasterImage()
58
59    o	add support for more efficient nativeRaster format
60
61
620.1-0	2010-03-17
63    o	first release on CRAN, supports readPNG() and writePNG()
64	for files and raw vectors. readPNG() supports any input
65	color type but will convert to 1-4 planes with 8-bit
66	accuracy each. writePNG() will write out 1-4 planes
67	8-bit each. writePNG() has currenty no provision for
68	generating or stroring a palette.
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