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       COMMAND

       rrrrrrrraaaannnnggggeeee ---- ddddiiiissssppppllllaaaayyyy oooorrrr sssseeeetttt rrrraaaaddddiiiiuuuussss rrrraaaannnnggggeeee lllliiiimmmmiiiittttssss

       USAGE

       rrrrrrrraaaannnnggggeeee [----hhhhllll] [_m_i_n _m_a_x]

       DESCRIPTION

       RRRRrrrraaaannnnggggeeee can be used without argument to display the minimum
       and maximum radii for the current range window specified for
       the current image.

       ----llll      Void all points with radius < _m_i_n.

       ----hhhh      Void all points with radius > _m_a_x.

       _m_i_n     Set lower radius limit to _m_i_n microns.

       _m_a_x     Set upper radius limit to _m_a_x microns.

       For example, the command:

       rrrrrrrraaaannnnggggeeee

       will result in a response of the form:

       rrrrmmmmiiiinnnn====1111222255557777 rrrrmmmmaaaaxxxx====111166663333777777771111

       This feature tends to be used a great deal in the process of
       working with various images.

       Alternatively and almost as commonly, rrrrrrrraaaannnnggggeeee is used with
       integer arguments to set limits on the minimum and maximum
       radial coordinate value to be allowed within the specified
       window of the image.

       Invoking rrrrrrrraaaannnnggggeeee for the purpose of setting minimum and/or
       maximum radial limits requires two integer arguments and
       both must be expressed in microns.

       Example:

       rrrrrrrraaaannnnggggeeee 11115555000000000000 111155555555000000000000

       If you simply wish to specify your choice of radius range
       limits, all radial coordinates falling below the minimum are
       raised to that minimum and all those which exceed the
       maximum are lowered to the maximum specified.












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       On the other hand you may employ either or both of the
       optional switches if you wish to void those points whose
       original radius falls outside the radius limits you set.

       Example:

       rrrrrrrraaaannnnggggeeee ----llll 5555000000000000 111100005555000000000000

       This command will cause all regions of the image having
       radii below 5000 microns to be void while, on the other
       hand, all regions having radii in excess of 105000 microns
       will assume be reduced to 105000 microns.

       Conversely, the ----hhhh option causes the radii exceeding your
       upper limit to be converted to voids.  Both options can be
       employed with the command if you wish.  The only restriction
       is that, if the void setting options are employed, both
       range limits must also be present.

       You will need to exercise some care to ensure that your
       rrrrrrrraaaannnnggggeeee arguments make sense.  It is fairly easy for an extra
       0 to sneak in where you don't want it, usually in the lower
       limit as luck would have it.  Needless to say, if this
       results in the lower limit exceeding the upper, you'll be
       left with a less than illuminating image.  An equally useful
       image results when you punch return with only one limit on
       the command line.

       CAVEATS

       It should be noted that the actual data values are
       permanently altered and that rrrrrrrraaaannnnggggeeee is not window command
       like llllttttrrrraaaannnnggggeeee and llllggggrrrraaaannnnggggeeee.


























