Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!dftsrv!iris613.gsfc.nasa.gov!cahalan
From: cahalan@iris613.gsfc.nasa.gov (Bob Cahalan)
Newsgroups: comp.sys.next
Subject: How do I display a byte image ???
Message-ID: <438@dftsrv.gsfc.nasa.gov>
Date: 25 Aug 89 19:08:34 GMT
Sender: news@dftsrv.gsfc.nasa.gov
Reply-To: cahalan@iris613.gsfc.nasa.gov (Bob Cahalan)
Organization: Goddard Space Flight Center Climate and Radiation Branch
Lines: 24

Friends in NXland,

I have a LANDSAT image of Washington DC, and I'd like
to see how it looks on the MegaPixel display.  Can anyone
help me with code?  The image is 1024X1024 8-bit pixels, and
the file has no header -- just 1024 bytes for line 1 followed
by 1024 bytes for line 2, etc to EOF, altogether 1 Megabyte.
I suppose I would only see 2-bit pixels on the MegaP-display,
or can I use the other 2 bits as well?
Do I need to use the Interface Builder?
Once I load the 1Mb into memory, should I use
   NXImageBitmap(displaypointer,1024,1024,2,1,NX_PLANAR,0,imagepointer)
????????????????????????????????????????????????????????????????????????
If so, how do I determine displaypointer?
I unfortunately have to do most of the work remotely, since the machine
itself is 4 miles away.  Any help would be much appreciated !!!

Thanks.
Bob Cahalan
NASA-GSFC
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Robert F. Cahalan              #  Laboratory for Atmospheres
cahalan@iris613.gsfc.nasa.gov  #  NASA-Goddard Space Flight Center
frrfc@scfvm (bitnet)           #  Greenbelt, MD 20771