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spydr - Online in the Cloud

Run spydr in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command spydr that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


spydr - GUI for Image display and analysis with yorick

SYNOPSIS


Spydr (pronounce spider) can be invoqued from the shell
spydr [ options ] image1.fits [ image2.fits ... ]
where the fits images can contain single images (not necessarily of the same size) or
data cube. Widlcards are allowed in names.

or within yorick
#include spydr.i
spydr,im1,im2,cube
spydr,"image1.fits",...

COMMAND LINE OPTIONS


--conf file
configuration file.

--hdu value
Specify a fits HDU to read

--dpi value
Yorick dpi value (yorick default = 75, spydr default = 83). Any value between 30
and 150 make sense.

--itt value
Intensity Transfer Table (1=linear, 2=sqrt, 3=square, 4=log, 5=hist equalized)

--pixsize value
Pixel size (or plate scale) in arcsec.

--boxsize value
Size of box for PSF fitting and Strehl calculation (pixels)

--saturation value
Value above which pixels have to be considered as saturated (ADU)

--wavelength value
Force wavelength for all images

--zeropoint value
Photometric zeropoint (magnitude)

--nbins value
Number of bins for histograms

--strehlaper value
Diameter of circular mask for Strehl calculations (pixels). The flux is integrated
in a circle of this diameter, while the sky is estimated from the remaining pixels
within the box of size "boxsize"

--batch
Turn on yorick batch mode (yorick quits when encountering an error). This flag is
recommended when starting spydr from a non-interactive session (e.g. from a gnome
applet).

--debug
Turn on the verbose mode (debugging mode).

--invert
Invert LUT

--fullgui
Show the plugin pane when the GUI is realized

--compact
Hide the lower part of the GUI at startup

DESCRIPTION


Spydr is a GUI for image visualization and simple analysis (cuts, zoom, values,
statistics, histogram, sigma filter) with changeable LUT and ITT. Spydr has a couple of
plugins to measure FWHM and Strehl. Press "?" on the main display area to get a popup
help:

The following shortcuts are available:
x/y: Plot line/column under cursor
X/Y: Toggle continuous plot of line/column
under cursor
c: Interactive plot of cut across image
h: Plot histogram of visible region
r: Radial plot centered on cursor
f: Fit 1d gaussian to 1d plot
e: Adjust min and max cut to 10% and 99.9%
of distribution
E: Reset min and max cut to min and max
of visible region
n/p: Next/prevous image
s: Sigma filter displayed image
-/+: Decrease/Increase zoom factor in zoom window
?: This help

EXAMPLES


From the shell:
$ spydr --dpi 74 --fullgui 20070730_2*.fits
$ spydr --pixsize 0.127 20070730_2[2-3]?.fits 20070730_241.fits

Within yorick:
> spydr,"~/ascam/2007jun26/20070625T2000*.fits"
> spydr,["20070730_1[1-3].fits","20070730_23.fits"]
> spydr,image
> spydr,[im1,im2]
> spydr,im1,im2

ENVIRONMENT VARIABLES


Y_PYTHON
Force the path to spydr.py. The default path is

./:Y_USER:Y_USER/python/:Y_SITES/python/:Y_SITE/python/

Y_GLADE
Force the path to spydr.glade. The default path is

./:Y_USER:Y_USER/glade/:Y_SITES/glade/:Y_SITE/glade/

Y_CONF Force the path to spydr.conf. The default path is

./:Y_USER:Y_SITE:/etc/:
./share/:Y_USER/share/:Y_SITE/share/:
./share/spydr/:Y_USER/share/spydr/:Y_SITE/share/spydr/

RESTRICTIONS AND BUGS


- only fits images handled to date
- the ITT display is not very well handled

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