1 SUMMARY

    This is a quick reference about  all  programs   available   under   the
    GILDAS  package.   It may not be up to date, and not all listed programs
    are fully debugged.

    For  convenience,  this  is  a   thematic   summary   in   which    some
    algorithms may appear more than one time.
    * GFITS *     * GRAPHIC *   * MAPPING *   * VECTOR *
    BACKGROUND    BLANKING      CIRCLE        CLEAN-C
    CLEAN         COMBINE       COMPRESS      CONVERT
    CORRELATE     CV_SMOOTH     DG_SMOOTH     EXAMPLE
    EXAMPLE1      EXPAND        EXTRACT       FIELD_FIND
    FIELD_LIST    FIELD_STAT    FILL_CUBE     FITS_GILDAS
    FLOW          FOURIER       GAUSS_1D      GAUSS_2D
    GAUSS_SMOOTH  GILDAS_FITS   GRID_CUBE     GRID_EXTEND
    GRID_PROJECT  GRID_SG       HEADER        HISTO_CLOUD
    HISTO_CROSS   HISTO_DOUBLE  HISTO_SIMPLE  HISTO_TABLE
    IMAGE         INTERPOLATE   LIST          MAKE_BACK
    MAKE_CUBE     MAKE_MOSAIC   MAKPLAN       MANDEL
    MANDEL_REAL   MAP_AVER      MAP_COMPRESS  MAP_EXPAND
    MAP_INTER     MASK          MERGE         MINIMIZE
    MIX-C         MOSAIC        MOSAIC_CLEAN  MX
    NOISE_SMOOTH  ONOFF         OVERLAY       PLANE
    PLANE_OLD     PRIMARY       PSC           REGRESSION
    REGUL         REPROJECT     RESTORE       RGBTOPS
    SELF_CAL      SHIFT         SMOOTH        SORT
    SUM           SWAP          TABLE         TRANSPOSE
    TRUE_COLOR    UV_ASCAL      UV_AVERAGE    UV_CENTER
    UV_CIRCLE     UV_CLIP       UV_COMPRESS   UV_CRASH
    UV_DFT        UV_EXTRACT    UV_FIT-OLD    UV_FIT
    UV_FITC       UV_FLAG       UV_LIST       UV_MAP
    UV_MERGE      UV_MODEL      UV_NOISE      UV_SELFCAL
    UV_SHIFT      UV_SHORT      UV_SINGLE     UV_SUBTRACT
    UV_ZERO       UVMAP         UVSORT

    To access the following subtopic, type  (under  UNIX)  "EXPLAIN  SUMMARY
    subtopic"
2 AVAILABLE_TASKS
    BACKGROUND     Compute background images
    BLANKING       Change the blanking value
    CIRCLE         Make the circular average of an image
    CLEAN-C        ?
    CLEAN          Cleaning (of data cubes).
    COMBINE        Combine two input images in many ways
    COMPRESS       ?
    CONVERT        NIC task.
    CORRELATE      Compute correlation image of two images.
    CV_SMOOTH      Cross validation smoothing
    DG_SMOOTH      Conjugate Gradient smoothing
    EXAMPLE        A simple example for input parameters
    EXPAND         ?
    EXTRACT        Extract a subset of an image to fill a subset of an image
    FIELD_FIND     Find the fields in an image
    FIELD_LIST     Find parameters of fields in an image
    FILL_CUBE      Resample a cube by Random or Regular interpolation
    FITS_GILDAS    Single Image disk-FITS to GILDAS translator
    FLOW           A bipolar flow hunter !...
    FOURIER        Compute complex fourier transform of an image
    GAUSS_1D       Multi component one-dimension gaussian fitting
    GAUSS_2D       Single component two-dimension gaussian fitting
    GAUSS_SMOOTH   Smooth by a gaussian in the fourier plane
    GILDAS_FITS    Single image GILDAS to disk-FITS translator
    GRID_CUBE      A simple gridding task to make an image from a table.
    GRID_EXTEND    A gridding task to make an image from a table.
    GRID_PROJECT   A task to reproject using convolution.
    GRID_SG        A gridding task to make an image from a table.
    HEADER         List and modify an image header
    HISTO_CLOUD    Cross histogram of two input images (Table output)
    HISTO_CROSS    Cross histogram of two input images (Image output)
    HISTO_DOUBLE   Histogram of an image as a function of another
    HISTO_SIMPLE   Histogram of an image
    HISTO_TABLE    Cross histogram of column tables
    IMAGE          Make an image from an RGDATA-like file
    INTERPOLATE    Resample and smooth an image along one direction
    LIST           List a table
    MAKE_BACK      Compute a background image
    MAKE_CUBE      Image reconstruction from uncomplete sample
    MAKE_MOSAIC    Build a mosaic for deconvolution by MAPPING
    MAKPLAN         NIC task
    MANDEL          Mandelbrot ensemble (integer version)
    MANDEL_REAL     Mandelbrot ensemble (real version)
    MAP_AVER       Average plans of a 3-D data cube.
    MAP_COMPRESS   Compress images (by Fourier truncation)
    MAP_EXPAND     Expand images (by Fourier expansion)
    MAP_INTER      Resample data cubes along 3rd axis.
    MASK           Mask part of cube
    MERGE          Merging of Tables
    MINIMIZE       Find best linear correlation between two images
    MIX-C          ?
    MOSAIC         ?
    MOSAIC_CLEAN   ?
    MX             UV plane-based CLEAN technique
    NOISE_SMOOTH   Noise smoothing enhancement
    ONOFF          NIC Task
    OVERLAY        ?
    PLANE          Compute the plane going through three points
    PLANE_OLD      Older version of PLANE
    PRIMARY        Correct for primary beam attenuation.
    PSC            To deal with the IRAS Point Source Catalog
    REGRESSION     Compute the linear regression from a cross histogram
    REGUL          A regularisation deconvolution method
    REPROJECT      Reproject an image in a different system
    RESTORE        NIC Task
    RGBTOPS        Convert RGB images to PostScript
    SELF_CAL       Self-Calibrate (in some way...) a UV data set
    SHIFT          ?
    SMOOTH         General pattern smoothing algorithm
    SORT           Sort a table (real version)
    SUM            Add a large number of images
    SWAP           Rotate or make a mirrored image of an input image
    TABLE          Make a Table from a formatted file
    TRANSPOSE      Transpose images
    TRUE_COLOR     To produce true color images of (bipolar) flows.
    UV_ASCAL       Self-calibrate (in some way...) a UV data set
    UV_AVERAGE     Average several channels of a UV table
    UV_CENTER      ?
    UV_CIRCLE      ?
    UV_CLIP        Clip UV data
    UV_COMPRESS    Compress UV data by spectral channel averaging
    UV_CRASH       N.A.
    UV_DFT         Compute an image using Direct Fourier Transform (no FFT)
    UV_EXTRACT     Extract some planes from UV data
    UV_FIT         Fit simple functions into UV data
    UV_FITC        Fit centered functions into UV data
    UV_FLAG        Flag UV data
    UV_LIST        List UV data
    UV_MAP         Makes map from UV data using gridding + FFT
    UV_MERGE       Merge UV data sets
    UV_MODEL       Computes UV data from input model.
    UV_NOISE       ?
    UV_SELFCAL     Self-calibrate (in some way...) a UV data set
    UV_SHIFT       Shift phase center of UV data
    UV_SHORT       Compute short spacing from single-dish (obsolete)
    UV_SINGLE      Compute short spacing from single-dish (recommended version)
    UV_ZERO        Enter zero spacing
    UVSORT         Precess and sort raw UV tables
    * VECTOR *     To activate GILDAS tasks.
2 ASTRONOMICAL_PROCESSING

    PSC            To deal with the IRAS Point Source Catalog
    REPROJECT      Reproject an image in a different system
    FLOW           A bipolar flow line-wing finding program.
    TRUE_COLOR     Produces true color images of bipolar flows.

2 CORRELATION_ANALYSIS

    CORRELATE      Computes correlation image of two images.
    HISTO_CLOUD    Cross histogram of two input images (Table output)
    HISTO_CROSS    Cross histogram of two input images (Image output)
    HISTO_DOUBLE   Histogram of an image as a function of another
    HISTO_SIMPLE   Histogram of an image
    HISTO_TABLE    Cross histogram of column tables
    MINIMIZE       Find best linear correlation between two images
    REGRESSION     Compute the linear regression from a cross histogram

2 DISPLAY
    * GRAPHIC *    GRAPHIC program. Uses GreG for contouring.
    * MAPPING *    Deconvolution program. Includes GRAPHIC.
    Both programs include VECTOR, and thus can RUN GILDAS tasks.

2 IMAGE_ANALYSIS

        BACKGROUND     Compute background images
    CIRCLE         Make the circular average of an image
    COMBINE        Combine two input images in many ways
    FIELD_FIND     Find the fields in an image
    FIELD_LIST     Find parameters of fields in an image
    PLANE          Compute the plane going through three points

2 IMAGE_CONSTRUCTION

    BLANKING       Change the blanking value
    CLEAN          Cleaning (of data cubes).
    UV_DFT         Slow Fourier Transform from UV to map (cubes)
    EXTRACT        Extract a subset of an image to fill a subset of an image
    FILL_CUBE      Resample a cube by Random or Regular interpolation
    FITS_GILDAS    Single image disk-FITS to GILDAS translator
    * GFITS *      FITS (disk or tape) to|from GILDAS format translator
    GILDAS_FITS    Single image GILDAS to disk-FITS translator
    GRID_CUBE      A gridding task to make an image from a table.
    GRID_EXTEND    A gridding task to make an image from a table.
    HEADER         List and modify an image header
    MAKE_CUBE      Image reconstruction for incomplete, noisy data.
    MAP_AVER       Average plans of a 3-D data cube.
    MAP_COMPRESS   Compress images (by Fourier truncation)
    MAP_EXPAND     Expand images (by Fourier expansion)
    MAP_INTER      Resample data cubes along 3rd axis.
    MASK           Mask part of an image.
    SUM            Add a large number of images
    SWAP           Rotate or make a mirrored image of an input image
    UV_MAP         Make maps (cubes) from UV data using gridding + FFT
    TRANSPOSE      Transpose images

2 MODEL_FITTING

    GAUSS_1D       Multi component one-dimension gaussian fitting
    GAUSS_2D       Single component two-dimension gaussian fitting
    REGRESSION     Compute the linear regression from a cross histogram
    UV_FIT         Fit simple functions into UV data
    UV_FITC        Fit centered functions into UV data

2 SMOOTHING

    CV_SMOOTH      Cross Validation smoothing
    DG_SMOOTH      Conjugate Gradient smoothing
    GAUSS_SMOOTH   Smooth by a gaussian in the Fourier plane
    INTERPOLATE    Resample and/or smooth an image along first dimension
    NOISE_SMOOTH   Noise smoothing enhancement
    SMOOTH         General (small) pattern smoothing algorithm

2 TABLE_PROCESSING

    HISTO_TABLE    Cross histogram of column of a table
    LIST           List a table
    MERGE          Merging of Tables
    SORT           Sort a table (real version)
    TABLE          Make a Table from a formatted file
    UVSORT         Precess and Sort a raw UV table

2 UV_PROCESSING

    UV_ASCAL       Self-calibrate (in some way...) a UV data set
    UV_AVERAGE     Average several channels of a UV table
    UV_CENTER      ?
    UV_CIRCLE      ?
    UV_CLIP        Clip UV data
    UV_COMPRESS    Compress UV data by spectral channel averaging
    UV_CRASH       N.A.
    UV_DFT         Compute an image using Direct Fourier Transform (no FFT)
    UV_EXTRACT     Extract some planes from UV data
    UV_FIT         Fit simple functions into UV data
    UV_FITC        Fit centered functions into UV data
    UV_FLAG        Flag UV data
    UV_LIST        List UV data
    UV_MAP         Makes map from UV data using gridding + FFT
    UV_MERGE       Merge UV data sets
    UV_MODEL       Computes UV data from input model.
    UV_NOISE       ?
    UV_SELFCAL     Self-calibrate (in some way...) a UV data set
    UV_SHIFT       Shift phase center of UV data
    UV_SHORT       Compute short spacing from single-dish (obsolete)
    UV_SINGLE      Compute short spacing from single-dish (recommended version)
    UV_ZERO        Enter zero spacing
    UVSORT         Precess and sort raw UV tables
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