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ccddisplay - displays an Image(5NEMO)
file onto a color Sun screen
disp
in=imagefile [parameters = values]
ccddisplay uses Image(5)
files, such as those produced by nnmush, to produce a grey-scaled image
of the file on a color graphics device. Note that one must be able to interact
with ccddisplay: therefore it must be run either within a graphics tool
in SunView or onto the console of a workstation from another workstation
or terminal.
NOTE: The current method to display images is convert them
to fits(5NEMO)
format, e.g. using ccdfits(1NEMO)
, and use any of the modern
FITS viewers, like ds9/saoimage.
The following parameters are
recognized in any order if the keyword is also given
- in=in-file
- input file,
in Image(5)
format [no default].
- cms=2, 4, 8, 16 ...
- the size of the color
map segment used: it must be an integral power of two between 2 and, for
Suns with 8 bit frame buffers, 256 (note that if you run ccddisplay within
SunView the program will only use the 256-entry color table while the mouse
is within the picture frame). Try 128 if you only have one image on the
screen, 128 and 64 for 2 images, and 64, 64 and 64 for three images (as
you may have noticed, the sum must be less then 256), or 256 if you are
using a remote console [default 64].
- maxi=0.0 - 1.0 mini=0.0 - 1.0
- only plots
intensities from the proportions maxi to mini, scaling the color table
to give maximum variation to the subrange. These parameters are primarily
useful to bring out contrast in the dim regions of the image [default maxi=1.0
mini=0.0].
- every=value
- plot every value pixel.
After drawing the image on
the screen the program prompt the user for the name of a subroutine to
manipulate the color map of the image. These subroutines will subsequently
prompt the user for any necessary parameters. The routines currently implemented
are:
- norm
- maps a monomial of degree N to the colormap, where N is supplied
by the user.
- normmod
- maps a monomial of degree N to the colormap, where
N is supplied by the user, but multiplies it by the number of contours
requested and then shifts the result into the range 0 to 1: this produces
a map with fewer contours near the beginning then the top
- flow
- uses the
same function as normmod, but dynamically varies the number of contours
from 0 to the maximum supplied by the user for an expanding ripple effect.
- linmod
- maps N linear contours onto the color table, N supplied by user.
- inv
- inverts the color map.
snapsmooth(1NEMO)
, ccdfits(1NEMO)
, saoimage(1L)
,
ds9(1L)
Relies on SunCore directly rather then yapp(3NEMO)
.
Peter
Wisnovsky
~/src/pswisnov/ccddisplay author’s original sources
xx-jun-87 Braught into system PSW
12-Jul-88 small mods for new filestruct
31-mar-01 deprecated this program
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