ASCII Art

This file contains:

  • AsciiArt an simple implementation of an ASCII art object,

  • ascii_art() a function to get the ASCII art representation of any object in Sage,

AUTHOR:

  • Jean-Baptiste Priez (2013-04): initial version

EXAMPLES:

sage: n = var('n')
sage: integrate(n^2/x,x)
n^2*log(x)
sage: ascii_art(integrate(n^2/x,x))
 2
n *log(x)
sage: ascii_art(integrate(n^2/(pi*x),x))
 2
n *log(x)
---------
    pi
sage: ascii_art(list(Partitions(6)))
[                                                       * ]
[                                                   **  * ]
[                                      ***      **  *   * ]
[                      ****       ***  *    **  **  *   * ]
[         *****  ****  *     ***  **   *    **  *   *   * ]
[ ******, *    , **  , *   , ***, *  , *  , **, * , * , * ]

This method ascii_art() could be automatically use by the display hook manager activated by the magic function: %display ascii_art:

sage: from sage.repl.interpreter import get_test_shell
sage: shell = get_test_shell()
sage: shell.run_cell('%display ascii_art')
sage: shell.run_cell("i = var('i')")
sage: shell.run_cell('sum(factorial(i)*x^i, i, 0, 10)')
         10           9          8         7        6        5       4      3
3628800*x   + 362880*x  + 40320*x  + 5040*x  + 720*x  + 120*x  + 24*x  + 6*x

     2
+ 2*x  + x + 1
sage: shell.run_cell('3/(7*x)')
 3
---
7*x
sage: shell.run_cell('list(Compositions(5))')
[ *
[ *  **   *        *                   *
[ *  *   **  ***   *   **    *         *   **    *          *
[ *  *   *   *    **  **   ***  ****   *   *    **   ***    *    **     *
[ *, * , * , *  , * , *  , *  , *   , **, ** , ** , **  , ***, *** , ****,

      ]
      ]
      ]
      ]
***** ]
sage: shell.run_cell('%display simple')
sage: shell.quit()
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                                                             ... .
class sage.typeset.ascii_art.AsciiArt(lines=[], breakpoints=[], baseline=None)

Bases: sage.typeset.character_art.CharacterArt

An Ascii art object is an object with some specific representation for printing.

INPUT:

  • lines – the list of lines of the representation of the ascii art object

  • breakpoints – the list of points where the representation can be split

  • baseline – the reference line (from the bottom)

EXAMPLES:

sage: i = var('i')
sage: ascii_art(sum(pi^i/factorial(i)*x^i, i, 0, oo))
 pi*x
e
sage.typeset.ascii_art.ascii_art(*obj, **kwds)

Return an ASCII art representation

INPUT:

  • *obj – any number of positional arguments, of arbitrary type. The objects whose ascii art representation we want.

  • sep – optional 'sep=...' keyword argument (or 'separator'). Anything that can be converted to ascii art (default: empty ascii art). The separator in-between a list of objects. Only used if more than one object given.

  • baseline – (default: 0) the baseline for the object

  • sep_baseline – (default: 0) the baseline for the separator

OUTPUT:

AsciiArt instance.

EXAMPLES:

sage: result = ascii_art(integral(exp(x+x^2)/(x+1), x))
...
sage: result
    /
   |
   |   2
   |  x  + x
   | e
   | ------- dx
   |  x + 1
   |
  /

We can specify a separator object:

sage: ident = lambda n: identity_matrix(ZZ, n)
sage: ascii_art(ident(1), ident(2), ident(3), sep=' : ')
              [1 0 0]
      [1 0]   [0 1 0]
[1] : [0 1] : [0 0 1]

We can specify the baseline:

sage: ascii_art(ident(2), baseline=-1) + ascii_art(ident(3))
[1 0][1 0 0]
[0 1][0 1 0]
     [0 0 1]

We can determine the baseline of the separator:

sage: ascii_art(ident(1), ident(2), ident(3), sep=' -- ', sep_baseline=-1)
                [1 0 0]
    -- [1 0] -- [0 1 0]
[1]    [0 1]    [0 0 1]

If specified, the sep_baseline overrides the baseline of an ascii art separator:

sage: sep_line = ascii_art('\n'.join(' | ' for _ in range(6)), baseline=6)
sage: ascii_art(*Partitions(6), separator=sep_line, sep_baseline=0)
       |       |      |      |     |     |     |    |    |    | *
       |       |      |      |     |     |     |    |    | ** | *
       |       |      |      |     |     | *** |    | ** | *  | *
       |       |      | **** |     | *** | *   | ** | ** | *  | *
       | ***** | **** | *    | *** | **  | *   | ** | *  | *  | *
****** | *     | **   | *    | *** | *   | *   | ** | *  | *  | *