bytes-circle - Show byte statistics as an ASCII circle graph

       This program was written by Roberto S. Galende <roberto.s.galende@gmail.com> and is copyrighted under the
       GPL, version 3 or later.

3.1                                              August 2, 2021                                  BYTES-CIRCLE(1)

bytes-circle is a program that shows statistics about bytes contained in a file, as an ASCII circle graph
       of deviations from mean in standard deviation (sigma) fraction increments.

       By  default, byte 0 is at the center of the circle and next bytes until 256 are situated counterclockwise
       around the center.

       bytes-circle expects a colour terminal, though other options are available.

       The ASCII art produced uses this  char  array  to  represent  increment  values  of  1/4*sigma  from  the
       statistic's mean:
          .,-~+*oO#@

       This  ranges from zero (.) on the left, to 9/4*sigma (@) on the right.  If value is zero or over the mean
       the char is printed green.  If it is below the mean, it's printed red. A (blue)  '='  char  represents  a
       byte value that doesn't appear in the file.

       bytes-circle - Show byte statistics as an ASCII circle graph

files  One or more files. If no file is indicated, standard input is used.

       -o{0|1|2|3}
              0=default | 1=no color | 2=numbers | 3=uncoloured numbers

       -b     No  color  (Black & white). In this case, ASCII art is adjusted so the zero sigma is at the middle
              of the chars array (char '*'). Increments are 1/2*sigma.

       -B     ('Break') stop processing files on first error encountered.

       -g     ('Global') show summary values for file, when using `-[sS]`.

       -l     List number of bytes counted, from 0 to 255.

       -L     List number of bytes counted, excluding zero valued.

       -Z     List number of bytes counted, but only zero valued.

       -n     Use Numbers. In this case, coloured numbers are used to represent values from 0 to 9/4*sigma.

       -r     Restrict statistics to the byte values that appear in the file, not to the 256 default. This  only
              makes a difference if there are byte values that do not appear in the file.

       -u     Use  Uncoloured  numbers  (equivalent  to  `-b  -n`).  In this case, numbers are used to represent
              positive deviations from 0 to 9/4*sigma, and letters are used  to  represent  negative  deviations
              from 'a' (-0) to 'i' (-9/4)*sigma.

       -v     Show program version and list chars used in coloured circle.

       -h     Show summary of options.

       -f#   ('From') analyze file from # byte on (1 implicit). SI suffixes supported.

       -s#   Slice file in slices of size # bytes. SI suffixes supported.

       -S#   Slice file in # slices. SI suffixes supported.

       -t#   ('To') analyze file until # byte. SI suffixes supported.

       -T#   ('To') analyze this # bytes from `-f`. SI suffixes supported.

       -z{0-255}
              Show a second circle centered on indicated byte bucket. A zero value is equivalent to 127 for ease
              of use. This way a second view of the statistics is available for data disaggregation.

       Note about SIsuffixes: use one of kmgtpe (powers of 10), KMGTPE (powers of 2), and prefixes '0x'
       (hexadecimal number) and '0' (octal number).

bytes-circle [-o {0|1|2|3}] [-bBglLZnruvh] [-[fsStT] #] [-z {0-255}] files...