


                                  - 1 -



       COMMAND

       eeeexxxxttttsssseeeetttt,,,, iiiinnnnttttsssseeeetttt ---- cccchhhhaaaannnnggggiiiinnnngggg tttthhhheeee vvvvaaaalllluuuueeeessss iiiinnnn rrrreeeeccccttttaaaannnngggguuuullllaaaarrrr rrrreeeeggggiiiioooonnnnssss

       USAGE

       eeeexxxxttttsssseeeetttt [_v_a_l_u_e]

       iiiinnnnttttsssseeeetttt [_v_a_l_u_e]

       DESCRIPTION

       EEEExxxxttttsssseeeetttt and iiiinnnnttttsssseeeetttt are essentially complements of each other
       relative to the complete current image. EEEExxxxttttsssseeeetttt and iiiinnnnttttsssseeeetttt
       provide a means of replacing all radii external to or
       internal to the current ltrange/lgrange window with either
       voids or with radii of _v_a_l_u_e while leaving intact the
       complementary interior or exterior region of the image
       defined by that range window.

       Invoking eeeexxxxttttsssseeeetttt without an argument assigns void values to
       all data points external to the open complement (exterior)
       of the set defined by the current ltrange/lgrange window.
       Alternatively, you may assign _v_a_l_u_e (in microns) throughout
       this same region of the image.

       Invoking iiiinnnnttttsssseeeetttt without an argument assigns void values to
       all data points of the closed set defined by the current
       ltrange/lgrange window.  Alternatively, you may assign a
       _v_a_l_u_e (in microns) throughout this same region.

       An example of the types of tasks in which these two commands
       have been found to be very useful is in the construction of
       uniform border regions separating sub-regions of images
       which are multi-element composites of features derived from
       a variety of other images.  A purely geometrical design
       mosaic of arbitrary complexity can constructed within the
       current image space utilizing only these two functions in
       concert with the range windowing capability.

       Such tasks as constructing transition zones having
       properties and geometric relationships different from or
       transitional between the remainder of a partially voided, or
       otherwise modified, image can be accomplished by the user by
       employing a wide variety of other EEEEcccchhhhoooo commands.

















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       CAVEATS

       The effective range of the eeeexxxxttttsssseeeetttt command excludes the
       longitudes and latitudes defining the range window.























































