Re: cell-array display in class

[Oliver Heimlich]

On 30.04.2015 16:51, Colin Macdonald wrote:
> On 30/04/15 10:19, Colin Macdonald wrote:
> > Other option might be leave `display` alone and change Octave to have
> > cell arrays render using `disp`, which can return a string (which we
> > then manipulate).
>
> I created a patch, bit horrid even by my standards.  Feedback?  Should I
> cleanup a little an put on Savannah?  Maybe the global variable thing is
> better...
>
> -----------------
>
> Here's it in action:
...
> Notice @infsup has no disp.m so gets a place-holder.


Colin,

the subsequent indentation of the disp output is not going to work. It 
will break console output if lines get very long. “disp” takes the 
console width into account when it creates its output. When you add 
spaces later on, you effectively decrease console width. Thus, the class 
method needs to know the current level of indentation!

You can have a look at the development version of the interval package. 
You can make it run from source using “make run”, alternatively install 
the development version for loading the package using “make install”.

I have added a disp.m function, which communicates with display.m using 
a global variable. Formatted output works for cell arrays without 
nesting. The indentation is wrong within nested cell arrays. The code is 
still experimental.

>> {infsup(magic (11))}
ans =
{
  [1,1] = 11×11 interval matrix

   Columns 1 through 6:

      [68]    [81]    [94]   [107]   [120]     [1]
      [80]    [93]   [106]   [119]    [11]    [13]
      [92]   [105]   [118]    [10]    [12]    [25]
     [104]   [117]     [9]    [22]    [24]    [37]
     [116]     [8]    [21]    [23]    [36]    [49]
       [7]    [20]    [33]    [35]    [48]    [61]
      [19]    [32]    [34]    [47]    [60]    [73]
      [31]    [44]    [46]    [59]    [72]    [85]
      [43]    [45]    [58]    [71]    [84]    [97]
      [55]    [57]    [70]    [83]    [96]   [109]
      [56]    [69]    [82]    [95]   [108]   [121]

   Columns 7 through 11:

      [14]    [27]    [40]    [53]    [66]
      [26]    [39]    [52]    [65]    [67]
      [38]    [51]    [64]    [77]    [79]
      [50]    [63]    [76]    [78]    [91]
      [62]    [75]    [88]    [90]   [103]
      [74]    [87]    [89]   [102]   [115]
      [86]    [99]   [101]   [114]     [6]
      [98]   [100]   [113]     [5]    [18]
     [110]   [112]     [4]    [17]    [30]
     [111]     [3]    [16]    [29]    [42]
       [2]    [15]    [28]    [41]    [54]

}

Oliver