Option to turn off variable type display

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David Winthrop
David Winthrop 2020-11-11
评论： Walter Roberson 2020-11-12
I would like to know how to get rid of the line that tells me what type of variable is. This wasn't there in earlier releases but is there in r2018a. This is very annoying and I'd like to remove it because I already know it is a cell array - I'm the one who made it!
How do I get rid of that part of the display?
>> C = {4,ones(2);randi(3,3,2),randi(3)}
C =
2×2 cell array
{[ 4]} {2×2 double}
{3×2 double} {[ 2]}

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Walter Roberson
Walter Roberson 2020-11-11
Ran in:
C = {4,ones(2);randi(3,3,2),randi(3)};
disp(C)
{[ 4]} {2×2 double} {3×2 double} {[ 3]}
That is, the information is not shown if you use disp(). The information is added by display() which is the function that is invoked when you do not have a semi-colon after an expression.
As far as I know, there is no option to tell display() not to put the information in.
  2 个评论
David Winthrop
David Winthrop 2020-11-11
Ah. So it looks like I would have to overload display.
Walter Roberson
Walter Roberson 2020-11-12
Ran in:
Or
C = {4,ones(2);randi(3,3,2),randi(3)};
display(C)
C = 2x2 cell array
{[ 4]} {2×2 double} {3×2 double} {[ 3]}
ntdisp(C)
C = {[ 4]} {2×2 double} {3×2 double} {[ 3]}
function ntdisp(C)
varname = inputname(1);
if isempty(varname); varname = 'ans'; end
fprintf('%s = \n', varname)
disp(C);
end
Sigh, it turns out the type is sometimes added by disp() instead of display(). For example for transfer functions, toolbox/control/ctrlmodels/@tf/display.m pretty-prints the transfer function without giving a type, but disp() of it displays the list of visible properties instead.

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