Am 16.12.2015 um 18:30 schrieb Peter Pearson:
On Thu, 17 Dec 2015 04:08:02 +1100, Chris Angelico <ros...@gmail.com> wrote:
>>
It could be 16 bits per pixel. Without knowing a lot more about the
source of the image and its format, it's hard to say with any
certainty.
Agreed. It's annoying when an agency goes to the trouble of making
huge datasets available online, but fails to identify the format.
http://www.cpc.ncep.noaa.gov/products/global_precip/html/README
says (among other things):
| Each record is a 9896 x 3298 Fortran array of IR brightness
| temperatures that have been scaled to fit into 1-byte by subtracting
| "75" from each datum. Therefore it is necessary for the user to add a
| value of "75" to each data value when using the data.
HTH a little,
--
Robin Koch
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