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NAME:
ATV
PURPOSE:
Interactive display of 2-D images. Uses widgets and is similar
to SAOimage and ximtool.
CATEGORY:
Image display.
CALLING SEQUENCE:
atv [,array_name] [,min = min_value] [,max=max_value]
[,/autoscale] [,/linear] [,/log] [,/histeq]
REQUIRED INPUTS:
None. If atv is run with no inputs, the window widgets
are realized and images can subsequently be passed to atv
from the command line or from the pull-down file menu.
OPTIONAL INPUTS:
array_name: a 2-D data array to display
KEYWORDS:
min: minimum data value to be mapped to the color table
max: maximum data value to be mapped to the color table
autoscale: set min and max to show a range of data values
around the median value
linear: use linear stretch
log: use log stretch
histeq: use histogram equalization
OUTPUTS:
None.
COMMON BLOCKS:
atv_state: contains variables describing the display state
atv_images: contains the internal copies of the display image
atv_color: contains colormap vectors
RESTRICTIONS:
Requires the GSFC IDL astronomy library routines,
for fits input.
The current version only works with 8-bit color.
For a current list of atv's bugs and weirdnesses, go to
http://cfa-www.harvard.edu/~abarth/atv/atv.html
SIDE EFFECTS:
Modifies the color table.
EXAMPLE:
To start atv running, just enter the command 'atv' at the
idl prompt, either with or without an array name as an input.
Only one atv window will be created at a time, so if one
already exists and another image is passed to atv from the
idl command line, the new image will be displayed in the
pre-existing atv window.
MODIFICATION HISTORY:
Written by Aaron J. Barth, first release 17 December 1998.
This version is 1.0b3, last modified 08 June 1998.
For the most current version, revision history, and further
information, go to:
http://cfa-www.harvard.edu/~abarth/atv/atv.html
(See /host/bluemoon/usr2/idllib/contrib/atv/atv.pro)