Content-type: text/html
Manpage of show
show
Section: User Manuals (1)
Updated: 20 JUN 2012
Index
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NAME
show - Display & Manipulation Utility for CRUSH maps and more.
SYNOPSIS
show
[options]
<filename>
DESCRIPTION
show
is a tool to display the
FITS
images produced by
crush(1)
(and also by
BoA).
It accepts all options of
imagetool(1)
for processing images before displaying them. Once the display is active,
show
provides an interactive interface with hotkeys (see below) and mouse gestures
that enable further image manipulation and mask creation/operations.
OPTIONS
All options of
imagetool(1)
are also used by
show.
Additionally
show
defines the following option(s):
- -help
-
Provides a basic help screen, similar to this one.
MOUSE GESTURES
Dragging with left button pressed defines a circular region of the desired size. Simple click the left mouse button where you want the center of the region, and hold it while dragging to where you want the outer edge of the circular region to reside.
You can also create standard, beam-sized (radius = FWHM), regions using the middle button, which capture over 98% of the flux for point sources. Slightly larger fixed-sized apertures can be created by clicking the right mouse button.
You can enter polygonal drawing mode by pressing
'P'.
Simply click the mouse at each vertex location, then finish the polygon by pressing
'P'
once again.
Further manipulation of regions is possible via the hotkeys described below.
HOTKEYS
Hotkeys can be used to perform various operations from the image display window.
(Note,
the image window must be the active window or else the hotkeys will not work!)
- h
-
Help with hotkeys.
- ?
-
Same as above.
[Display Operations]
- Z,z
-
Zoom in/out.
- B,b
-
Brightness increment/decrement.
- C,c
-
Contrast increment/decrement.
- K, k
-
Toggle back & forth between color schemes.
- i
-
Invert colors.
- x
-
Toggle between linear, logarithmic, and square-root scaling.
- <,>
-
Toggle between Source, RMS, and S/N maps.
[Operations for Highlighted Regions]
- R
-
Remove all regions (circles and polygons) defined so far.
- P
-
Start/Finish drawing a polygonal region.
- r
-
Circle the defined regions (default).
- m
-
Mask the defined regions by a partially opaque disk.
- n
-
Toggle displaying region names.
- l
-
Level to zero as measured outside the defined regions.
- g
-
Gradient removal as measured outside defined regions.
- f
-
fit Gaussians to the defined source regions.
- F
-
Fluxes inside the apertures defined by the regions.
- N
-
RMS values inside the defined regions.
[Miscellaneous Operations]
- Q
-
Qonvolve to beam size.
- q
-
Deconvolve with a standard Gaussian beam.
- s
-
Resample onto a 1 arcsec grid.
- T
-
Fourier Transform.
- p
-
Perform a pointing fit.
- E
-
Extended Structure filter. May improve point source appearance.
- u
-
Change display units.
- U
-
Undo last operation.
- w
-
write file.
- W
-
Write regions (mask) file.
FILES
/usr/share/crush/example.mask
BUGS
If you find them, please report them to the author (see below).
AUTHOR
Attila Kovacs <attila[AT]submm.caltech.edu>
SEE ALSO
crush(1),
imagetool(1),
coadd(1),
detect(1),
difference(1)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- MOUSE GESTURES
-
- HOTKEYS
-
- [Display Operations]
-
- [Operations for Highlighted Regions]
-
- [Miscellaneous Operations]
-
- FILES
-
- BUGS
-
- AUTHOR
-
- SEE ALSO
-
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Time: 23:07:21 GMT, June 20, 2012