It depends on what you want to do with this matrix. If you just want it to be displayed nicely:
classdef partmat < double
methods
function obj = partmat(data)
if nargin < 1
data = [];
end
validateattributes(data, {'numeric'}, {'2d'})
obj = obj@double(data);
end
function disp(obj)
for irow = 1:size(obj, 1)
for icolumn = 1:size(obj, 2)
if ~isnan(obj(irow, icolumn))
x = num2str(obj(irow, icolumn));
else
x = '--';
end
fprintf(['\t', x]);
end
fprintf('\n');
end
end
end
end
Example:
>> x = partmat(magic(5))
x =
17 24 1 8 15
23 5 7 14 16
4 6 13 20 22
10 12 19 21 3
11 18 25 2 9
>> x(3) = nan
x =
17 24 1 8 15
23 5 7 14 16
-- 6 13 20 22
10 12 19 21 3
11 18 25 2 9
If you want to get even fancier you could overload subsassgn and allow notation like
x(5) = '--'
