HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.

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Ximage
Release Notes Version 3.00
Part of HEAsoft 5.0 - February 10, 2000
* Changes in version 3
  • Dynamically allocated image maps
  • Linux support
  • Internal image header accessed by keywords
  • Mission database defining mission-specific settings
  • Removed platform-dependent binary calibration files
  • Increased color resolution (Up to 83 levels)
  • Readline capability allows command recall and filename completion
  • Qualifiers to specify PGPLOT attributes in plotting commands
* New commands
  • centroid - Centroid calculation
  • chheader - Change internal header
  • chmdb - Change mission database
  • colors - Show and manipulate available colors
  • counts - Sum counts in selected area
  • excess - Find excesses (background + excess + search = detect)
  • flip - Flip image (horizontal, vertical, +/-90 degrees)
  • free_saved - Free memory of saved image
  • keywords - List help keywords
  • levels - Manipulate image levels
  • offset - Calculate angular offset between two points
  • powplot - Spawn POWplot image viewer
  • search - Slide-cell search (background + excess + search = detect)
  • surface - Plot pseudo-3d surface
  • timestamp - Print the time on the image plot
  • value - Print pixel values, an alias for polygon
  • viewport - Set configuration for multiple plots on page
  • vplabel - Label the viewport
* New options
  • background
    • /barylim=x - Set the barycenter limit
    • /bxhprob=x - Set the box half match probability
    • /flat_value=x - Set background to flat value
    • /infile=[filename] - Load background data from /outfile text file
    • /outfile=[filename] - Write background data to text file
    • /reset - Reset internal background data
    • /sigmult=x - Set the sigma multiplier
  • cct
    • /bcreset - Reset brightness and contrast
    • /brightness - Set brightness value
    • /contrast - Set contrast value
    • /cursor - Set brightness and contrast interactively
    • /outfile=[filename] - Write current color table to file
    • /reset - Reset to starting color table
    • /reverse - Reverse color table
    • /set - Set color table for future images
  • contour
    • /coordsaved - Plot contour with coordinates of saved map
    • /loaded - Plot contour with loaded levels
    • /nobox - Do not plot box or frame
    • /spectrogram - Label contours as spectrogram
    • /sqrt - Plot with square-root scaling
  • detect
    • /flat_value=x - Set background to flat value
    • /nolabel - Do not label detected sources
  • display
    • /loaded - Display with loaded levels
    • /minlevel=x - Set minimum level
    • /maxlevel=x - Set maximum level
    • /nobox - Do not plot box or frame
    • /sqrt - Plot with square-root scaling
  • extract
    • /cl3file=[filename] - Write new color-color file format
  • info
    • /compass - Plots compass on image
    • /cursor - Cursor specifies location
    • /textonly - Plots info text only
  • label
    • /angle=x - Set angle of label
    • /cursor - Set location of label interactively
    • /just=[LEFT,RIGHT,CENTER] - Set justification of label
    • /vx=x/vy=y - Set location of label in viewport coordinates
  • polygon
    • /boxsize=n - Prints values <=n pixels from selected point
    • /label - Plots value on image
  • psf
    • /energy=x - Set the energy to use with energy-dependent psf
    • /engfile=[filename] - Set the energy spectrum to use with energy-dependent psf
    • /multpsffile=[filename] - Output psf file
    • /noplot - Do not plot psf
  • read_image
    • /bscale=x - Apply scaling to image
    • /bzero=x - Apply offset to image
    • /gtifile=[filename] - Use specified GTI file to filter events
    • /gtimode=[AND,OR,SUB,NONE] - Set mode for usage of GTI file
    • /expr=[filter expression] - Apply filter to events
    • /szx=x/sxy=y - Set size for nonsquare image
    • /unknown - Ignore mission info and assume unknown mission
    • /zcol=[column name] - Specify column to pile on pixel values in image
  • remove_sources
    • /constant=n - Replace removed area with constant value
    • /regionfile=[filename] - Remove area defined in region file
  • rescale
    • /file_vector=[filename] - Specify vector defined in text file for scaling
    • /column=n - Specify column in vector file
    • /x_direction - Specify x direction for vector scaling
    • /y_direction - Specify y direction for vector scaling
    • /divide - Divide constant or vector
    • /min_fraction=x - Minimum fraction in vector division to zero out
    • /to_exposure=x - Scale to exposure value
  • scale
    • /top/bottom/left/right - Set location of scale
    • /curvp - Plot with respect to current viewport
    • /margin=x - Set margin between scale and viewport
    • /spacing=x - Set spacing between labels and scale
    • /thickness=x - Set thickness of scale
  • skymap
    • /sdc - Queries SDC
  • slice
    • /connect - Plot connected lines in spectrogram
    • /error=x - Set size of error bars
    • /infile=[filename] - Plot values in input text file over image
    • /minframe=x - Set minimum value of plot area
    • /maxframe=x - Set maximum value of plot area
    • /plot - Plot slice output in separate window
  • smooth
    • /back_brightness=x - Scale smoothed image to specified background
    • /to_exposure=x - Scale smoothed image to specified exposure
  • title
    • /reset - Reset title to default
* Altered commands and options
  • contour
    • /scale=x - Replaced by contour/csize=x
    • /levels_from_file/file=[filename] - Replaced by:
      levels/load [filename]
      cont/loaded
  • detect
    • /file_out=[filename] - Replaced by detect/filedet=[filename]
  • display
    • /scale=x - Replaced by display/csize=x
    • /user_defined - Removed. Create levels file and "levels/load [filename]" for similar effect
    • /levels_from_file/file=[filename] - Replaced by:
      levels/load [filename]
      disp/loaded
    • /table=[tablename] - Never implemented, but functionally the same as:
      cct/set [tablename]
      display
    • /refresh - Removed. Never actually implemented
  • extract
    • /energy - Replaced with /ecol. extract/energy -> extract/ecol=PHA
    • /phalow=n/phahigh=m - Replaced with extract/eminqdp=n/emaxqdp=m
    • /phafile=[filename] - Removed (Format no longer supported by mkpha)
  • header
    • /exposure - Replaced by header/mapid=EXMAP
  • info
    • /scale - Replaced by info/csize=x
    • /xs=x/ys=y - Replaced by info/xpix=x/ypix=y
  • label
    • /scale - Replaced by label/csize=x
    • /size_of_symbol=x - Replaced by label/symcsize=x
    • /width_of_symbol=x - Replaced by label/symlwidth=x
  • read_image
    • /compressed - Removed
    • /degrees - Removed, parser can determine format
    • /exp_map - Replaced by read/exposure_map
    • /header - Removed
    • /min_pha=n/max_pha=m - Replaced by read/ecol=pha/emin=n/emax=m
    • /min_pi=n/max_pi=m - Replaced by read/ecol=pi/emin=n/emax=m
    • /t_min=t1/t_max=t2 - Replaced by read/tmin=t1/tmax=t2
    • /xpr - Removed
  • remove_sources
    • /zero - Replaced by remove_sources/constant=0
  • scale
    • /no_of_ticks=n - Renamed to more accurate no_of_divisions
  • show
    • detectors - Removed, use chmdb/list
  • skymap
    • /old - Removed, use skymap/file=[filename] to read existing file
    • /rfits_simbad - Removed
  • slice
    • /output/file=[filename] - Replaced by slice/outfile=[filename]
* Commands no longer available
  • cda - Change display area, replaced by viewport
  • check - Check detect vs. simulate
  • cl - Change number of color levels, replaced by levels/number=n
  • dir - List current directory, use $ls
  • save_levels - Save current color levels, replaced by levels/save [filename]
  • flux - Return flux for given count rate (simple models) use xspec
  • simulate - See web version at http://www.sdc.asi.it
Ximage Home Page Xanadu Home Page Xanadu ftp site
Please send reports of errors to : xanprob@athena.gsfc.nasa.gov
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Last modified: Wednesday, 12-Jul-2006 09:10:27 EDT

HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.