NAME

 
 SkyQuery - Widget for searching catalogs and plotting the results in an image.

NAMESPACE

 
 skycat

PARENT CLASS

 
 cat::AstroQuery

SYNOPSIS

 
 SkyQuery <path> ?options?

DESCRIPTION

 
 A SkyQuery widget is a frame containing entries for search options
 (inherited from class AstroQuery) with added support for plotting
 objects in an image.

WIDGET OPTIONS

 
 -skycat
        Name of SkyCat itcl widget.

PUBLIC METHODS

 
 convert_coords {in_x in_y in_units out_units}
        Convert the given input coordinates in the given input units to
        the given output units and return a list {x y} with the new
        values.  The units may be one of {canvas image wcs deg "wcs
        $equinox", "deg $equinox"}.

 get_image_center_radius {wcs_flag}
        Return a list of values indicating the center coordinates and
        radius of the current image.  If wcs_flag is 1, the return list is
        {ra dec equinox radius-in-arcmin}, otherwise {x y
        radius-in-pixels}. If no image is loaded, an empty string is
        returned.

 get_image_center_width_height {wcs_flag}
        Return a list of values indicating the center coordinates and the
        width and height of the current image.  If wcs_flag is 1, the
        return list is {ra dec equinox width height}, width and height in
        arcmin, otherwise {x y width height} in pixels. If no image is
        loaded, an empty string is returned.

 select_area {}
        Ask the user to select an area to search interactively and insert
        the resulting radius and center pos in the catalog window.

 select_image_area {wcs_flag}
        Ask the user to select an area of the image by dragging out a
        region on the image return the resulting center pos and radius as
        a list of {x y radius-pixels}, or {ra dec equinox
        radius-in-arcmin} if wcs_flag is 1. If we are dealing with an
        image server, the radius value is replaced by width and height,
        i.e.: {ra dec equinox width height}, where width and height are in
        arcmin for wcs or pixels otherwise.  An empty string is returned
        if there is no image or the user cancels the operation.

 set_default_values {}
        Set the default values for the search panel entries:  (redefined
        from parent class AstroCat to set values from the image).

 set_from_image {}
        Set the default search values to the center position and radius of
        the image, (for catalogs) of width and height of image (for image
        servers).

PROTECTED METHODS

 
 add_search_options {}
        Add (or update) the search options panel (redefined from parent
        class AstroCat to add buttons).

PROTECTED VARIABLES

 
 image_
        Internal rtdimage image for main image.

SEE ALSO

 
 AstroQuery(n)

 


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Last change: 07 May 99